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Hi there. I'm John. I have a [https://www.elenco.com/product/300-in-1-electronic-project-lab/ 300in1 electronic project lab], and I am slowly making my way through the projects. The various projects are listed in the [https://www.elenco.com/wp-content/uploads/2017/10/MX908-3.pdf sample manual] and duplicated in the [[#Projects|projects]] section below. There are some [[300in1/Admin|admin notes]] for John's use.
Hi there. I'm John. I have a [https://www.elenco.com/product/300-in-1-electronic-project-lab/ 300in1 electronic project lab] in my [[lab]], and I am slowly making my way through the projects as part of my [[electronics]] hobby. The various projects are listed in the [https://www.elenco.com/wp-content/uploads/2017/10/MX908-3.pdf sample manual] and duplicated in the [[#Projects|projects]] section below. There are some [[300in1/Admin|admin notes]] for John's use.


= Notes =
= Notes =
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Short leg (cathode) negative. (Line/band near cathode).
Short leg (cathode) negative. (Line/band near cathode).
* IN60P: Germanium diode
* C4V7ST: Zener diode


Emitter - Collector - Base
Emitter - Collector - Base
Line 15: Line 12:


https://www.jj5.net/sixsigma/300in1
https://www.jj5.net/sixsigma/300in1
== Diodes ==
{|class="wikitable"
! Type
! Number
! Forward voltage (Uf)
! Capacitance (C)
|-
| Switching Diode
| 2S2473
| 697mV
| 10pF
|-
| Rectifier Diode
| IN4001
| 668mV
| 32pF
|-
| Zener Diode
| C4V7ST
| 4.48V 800mV
|
|-
| Germanium Diode
| IN60P
| 298mV
| 32pF
|}


= Table =
= Table =
Line 20: Line 46:
{|class="wikitable sortable"
{|class="wikitable sortable"
! #
! #
! Name
! Project
! Page
! Page
! Date
! Date
! Made
! Made
! Worked
! Worked
! Build
! Review
|-
|-
| <!-- number --> 001
| <!-- number --> 001
| <!-- name  --> [[#Light-Controlled Bird]]
| <!-- name  --> [[#Light-Controlled Bird]]
| <!-- page  -->  
| <!-- page  --> 12
| <!-- date  -->  
| <!-- date  -->  
| <!-- made  -->  
| <!-- made  -->  
| <!-- worked -->  
| <!-- worked -->  
| <!-- build  -->
| <!-- review -->
|-
|-
| <!-- number --> 002
| <!-- number --> 002
| <!-- name  --> [[#Transistor Radio]]
| <!-- name  --> [[#Transistor Radio]]
| <!-- page  -->  
| <!-- page  --> 13
| <!-- date  -->  
| <!-- date  -->  
| <!-- made  -->  
| <!-- made  -->  
| <!-- worked -->  
| <!-- worked -->  
| <!-- build  -->
| <!-- review -->
|-
|-
| <!-- number --> 003
| <!-- number --> 003
| <!-- name  --> [[#Sound Scooper]]
| <!-- name  --> [[#Sound Scooper]]
| <!-- page  -->  
| <!-- page  --> 14
| <!-- date  -->  
| <!-- date  -->  
| <!-- made  -->  
| <!-- made  -->  
| <!-- worked -->  
| <!-- worked -->  
| <!-- build  -->
| <!-- review -->
|-
|-
| <!-- number --> 004
| <!-- number --> 004
| <!-- name  --> [[#American Patrol Car Siren]]
| <!-- name  --> [[#American Patrol Car Siren]]
| <!-- page  -->  
| <!-- page  --> 15
| <!-- date  --> 2018-03-17
| <!-- date  --> 2018-03-17
| <!-- made  --> &#10003;
| <!-- made  --> &#10003;
| <!-- worked --> &#10003;
| <!-- worked --> &#10003;
| <!-- build  -->
| <!-- review --> [https://youtu.be/W43VxTAbYrc review]
|-
| <!-- number --> 005
| <!-- name  --> [[#Digital Roulette]]
| <!-- page  --> 16
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 006
| <!-- name  --> [[#IC Organ]]
| <!-- page  --> 16
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 007
| <!-- name  --> [[#Light Telegraph]]
| <!-- page  --> 17
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 008
| <!-- name  --> [[#Introducing the Resistor]]
| <!-- page  --> 17
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 009
| <!-- name  --> [[#Parallel Resistor]]
| <!-- page  --> 18
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 010
| <!-- name  --> [[#Meet the Diode]]
| <!-- page  --> 18
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 011
| <!-- name  --> [[#The LED - a Special Diode]]
| <!-- page  --> 19
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 012
| <!-- name  --> [[#The Electronic Gas Tank]]
| <!-- page  --> 19
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 013
| <!-- name  --> [[#Capacitors in Series and Parallel]]
| <!-- page  --> 20
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 014
| <!-- name  --> [[#Meet the Transistor]]
| <!-- page  --> 20
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 015
| <!-- name  --> [[#Transistor as switches]]
| <!-- page  --> 21
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 016
| <!-- name  --> [[#PNP Transistor Switch]]
| <!-- page  --> 22
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 017
| <!-- name  --> [[#NPN Transistor Switch]]
| <!-- page  --> 22
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 018
| <!-- name  --> [[#Delay Light]]
| <!-- page  --> 23
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 019
| <!-- name  --> [[#Night Light]]
| <!-- page  --> 23
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 020
| <!-- name  --> [[#Electronic Timer]]
| <!-- page  --> 24
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 021
| <!-- name  --> [[#Capital Letter Display]]
| <!-- page  --> 24
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 022
| <!-- name  --> [[#Small Letter Display]]
| <!-- page  --> 25
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 023
| <!-- name  --> [[#Number Display]]
| <!-- page  --> 25
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 024
| <!-- name  --> [[#An Invertor Circuit]]
| <!-- page  --> 26
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 025
| <!-- name  --> [[#Meet the OR Gate]]
| <!-- page  --> 26
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 026
| <!-- name  --> [[#Introducing the AND Gate]]
| <!-- page  --> 27
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 027
| <!-- name  --> [[#Using the NOR Gate]]
| <!-- page  --> 27
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 028
| <!-- name  --> [[#Meet the NAND Gate]]
| <!-- page  --> 28
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 029
| <!-- name  --> [[#How a Multivibrator Works]]
| <!-- page  --> 28
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 030
| <!-- name  --> [[#A One-Shot Multivibrator]]
| <!-- page  --> 29
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 031
| <!-- name  --> [[#An R-S Flip Flop]]
| <!-- page  --> 29
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 032
| <!-- name  --> [[#Meet the Oscillator]]
| <!-- page  --> 30
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 033
| <!-- name  --> [[#Changing Oscillation with Capacitor]]
| <!-- page  --> 30
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 034
| <!-- name  --> [[#Changing Oscillation with Foreign Substance]]
| <!-- page  --> 31
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 035
| <!-- name  --> [[#More about Oscillator]]
| <!-- page  --> 31
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 036
| <!-- name  --> [[#A Push-Pull Oscillator]]
| <!-- page  --> 32
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 037
| <!-- name  --> [[#Low Distortion Sinewave Oscillator]]
| <!-- page  --> 32
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 038
| <!-- name  --> [[#Strobe Light]]
| <!-- page  --> 33
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 039
| <!-- name  --> [[#CdS Controlled Oscillator]]
| <!-- page  --> 33
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 040
| <!-- name  --> [[#Frequency Shift Oscillator]]
| <!-- page  --> 34
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 041
| <!-- name  --> [[#Electronic Grandfather Clock]]
| <!-- page  --> 34
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 042
| <!-- name  --> [[#Electronic Metronome]]
| <!-- page  --> 35
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 043
| <!-- name  --> [[#Motion Detector]]
| <!-- page  --> 35
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 044
| <!-- name  --> [[#Door Alarm]]
| <!-- page  --> 36
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 045
| <!-- name  --> [[#Rapid LED Display Switching]]
| <!-- page  --> 36
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 046
| <!-- name  --> [[#Code Practice Unit]]
| <!-- page  --> 37
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 047
| <!-- name  --> [[#Twin-T Audio Oscillator]]
| <!-- page  --> 37
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 048
| <!-- name  --> [[#Current Switch]]
| <!-- page  --> 38
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 049
| <!-- name  --> [[#Shot in the Dark]]
| <!-- page  --> 38
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 050
| <!-- name  --> [[#Variable A-C Oscillator]]
| <!-- page  --> 39
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 051
| <!-- name  --> [[#Two-Tone Buzzer]]
| <!-- page  --> 39
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 052
| <!-- name  --> [[#Sawtooth Wave Oscillator]]
| <!-- page  --> 40
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 053
| <!-- name  --> [[#Astable Multivibrator]]
| <!-- page  --> 40
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 054
| <!-- name  --> [[#Monostable Multivibrator]]
| <!-- page  --> 41
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 055
| <!-- name  --> [[#Code Practice Unit II]]
| <!-- page  --> 41
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 056
| <!-- name  --> [[#The Noisy Light]]
| <!-- page  --> 42
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 057
| <!-- name  --> [[#Hearing Aid Amplifier]]
| <!-- page  --> 42
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 058
| <!-- name  --> [[#Light/Sound Code Practice Unit]]
| <!-- page  --> 43
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 059
| <!-- name  --> [[#Light Controlled Burglar Alarm]]
| <!-- page  --> 43
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 060
| <!-- name  --> [[#DC-DC Converter]]
| <!-- page  --> 44
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 061
| <!-- name  --> [[#Count Down Timer]]
| <!-- page  --> 44
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 062
| <!-- name  --> [[#Transistor Frequency Doubler]]
| <!-- page  --> 45
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 063
| <!-- name  --> [[#One Transistor Full-Wave Rectifier]]
| <!-- page  --> 45
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 064
| <!-- name  --> [[#Crystal Set Radio]]
| <!-- page  --> 46
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 065
| <!-- name  --> [[#Funny Transistor Radio]]
| <!-- page  --> 46
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 066
| <!-- name  --> [[#Wireless Code Transmitter]]
| <!-- page  --> 47
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 067
| <!-- name  --> [[#Remote Water Level Detector]]
| <!-- page  --> 47
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 068
| <!-- name  --> [[#IC Radio]]
| <!-- page  --> 48
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 069
| <!-- name  --> [[#Morse Code Transmitter]]
| <!-- page  --> 48
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 070
| <!-- name  --> [[#AM Transmitter]]
| <!-- page  --> 49
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 071
| <!-- name  --> [[#Broadcasting Organ]]
| <!-- page  --> 49
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 072
| <!-- name  --> [[#Two-Tone Patrol Car Siren]]
| <!-- page  --> 50
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 073
| <!-- name  --> [[#Plant Growth Stimulator]]
| <!-- page  --> 50
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 074
| <!-- name  --> [[#Electronic Woodpecker]]
| <!-- page  --> 51
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 075
| <!-- name  --> [[#Fish Caller]]
| <!-- page  --> 51
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 076
| <!-- name  --> [[#Electronic Raindrops]]
| <!-- page  --> 52
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 077
| <!-- name  --> [[#Pencil Lead Organ]]
| <!-- page  --> 52
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 078
| <!-- name  --> [[#Electronic Motorcycle]]
| <!-- page  --> 53
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 079
| <!-- name  --> [[#Machine Gun Pulse Detector]]
| <!-- page  --> 53
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 080
| <!-- name  --> [[#Electronic Siren]]
| <!-- page  --> 54
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 081
| <!-- name  --> [[#Chirping Bird]]
| <!-- page  --> 54
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 082
| <!-- name  --> [[#Electronic Cat]]
| <!-- page  --> 55
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 083
| <!-- name  --> [[#Electronic Bird]]
| <!-- page  --> 55
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 084
| <!-- name  --> [[#Horror Movie Sound Effect]]
| <!-- page  --> 56
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 085
| <!-- name  --> [[#Electronic Organ]]
| <!-- page  --> 56
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 086
| <!-- name  --> [[#Sound Machine]]
| <!-- page  --> 57
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 087
| <!-- name  --> [[#Sound Machine II]]
| <!-- page  --> 57
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 088
| <!-- name  --> [[#Multi-Tone Siren]]
| <!-- page  --> 58
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 089
| <!-- name  --> [[#Digital Rhythm]]
| <!-- page  --> 58
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 090
| <!-- name  --> [[#Two-IC Electric Organ]]
| <!-- page  --> 59
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 091
| <!-- name  --> [[#Majority Logic Gate]]
| <!-- page  --> 59
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 092
| <!-- name  --> [[#Electronic Coin Toss]]
| <!-- page  --> 60
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 093
| <!-- name  --> [[#Electronic Coin Toss II]]
| <!-- page  --> 60
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 094
| <!-- name  --> [[#Electronic Coin Toss III]]
| <!-- page  --> 61
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 095
| <!-- name  --> [[#Even or Odd]]
| <!-- page  --> 61
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 096
| <!-- name  --> [[#Quick Draw Gate]]
| <!-- page  --> 62
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 097
| <!-- name  --> [[#Close in]]
| <!-- page  --> 62
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 098
| <!-- name  --> [[#ESP Tester]]
| <!-- page  --> 63
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 099
| <!-- name  --> [[#The Light Fantastic]]
| <!-- page  --> 63
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 100
| <!-- name  --> [[#Shooting Game]]
| <!-- page  --> 64
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 101
| <!-- name  --> [[#Marching LEDs]]
| <!-- page  --> 64
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 102
| <!-- name  --> [[#Electronic Dice]]
| <!-- page  --> 65
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 103
| <!-- name  --> [[#Electronic Roulette]]
| <!-- page  --> 65
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 104
| <!-- name  --> [[#Meet the VCO]]
| <!-- page  --> 66
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 105
| <!-- name  --> [[#Silicon Diode Solar Cell]]
| <!-- page  --> 66
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 106
| <!-- name  --> [[#Integrating Circuit]]
| <!-- page  --> 67
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 107
| <!-- name  --> [[#Astable Multivibrator Using OP Amplifier]]
| <!-- page  --> 67
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 108
| <!-- name  --> [[#Pulse Generator]]
| <!-- page  --> 68
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 109
| <!-- name  --> [[#Comparator]]
| <!-- page  --> 68
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 110
| <!-- name  --> [[#Experiment of Comparator]]
| <!-- page  --> 69
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 111
| <!-- name  --> [[#Comparator with Hysteresis]]
| <!-- page  --> 69
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 112
| <!-- name  --> [[#Constant Current Sources by OP Amplifier]]
| <!-- page  --> 70
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 113
| <!-- name  --> [[#Non-Inverting Adder]]
| <!-- page  --> 70
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 114
| <!-- name  --> [[#Schmitt Trigger Circuit]]
| <!-- page  --> 71
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 115
| <!-- name  --> [[#Delayed Timer]]
| <!-- page  --> 71
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 116
| <!-- name  --> [[#Pulse Frequency Doubler]]
| <!-- page  --> 72
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 117
| <!-- name  --> [[#Touch Switch Using OP Amplifier]]
| <!-- page  --> 72
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 118
| <!-- name  --> [[#Early Bird]]
| <!-- page  --> 73
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 119
| <!-- name  --> [[#DC-DC Converter by OP Amplifier]]
| <!-- page  --> 73
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 120
| <!-- name  --> [[#Inverting Amplifier]]
| <!-- page  --> 74
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 121
| <!-- name  --> [[#Non-Inverting Amplifier]]
| <!-- page  --> 74
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 122
| <!-- name  --> [[#Differential Amplifier]]
| <!-- page  --> 75
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 123
| <!-- name  --> [[#Differential Output Amplifier]]
| <!-- page  --> 75
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 124
| <!-- name  --> [[#Power Amplifier Using OP Amplifier]]
| <!-- page  --> 76
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 125
| <!-- name  --> [[#Balanced Transformerless Amplifier]]
| <!-- page  --> 76
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 126
| <!-- name  --> [[#Three-Stage Differential Amplifier]]
| <!-- page  --> 77
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 127
| <!-- name  --> [[#VCO Using OP Amplifier]]
| <!-- page  --> 77
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 128
| <!-- name  --> [[#Voltage Controlled Amplifier]]
| <!-- page  --> 78
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 129
| <!-- name  --> [[#V-F Converter]]
| <!-- page  --> 78
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 130
| <!-- name  --> [[#F-V Converter]]
| <!-- page  --> 79
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 131
| <!-- name  --> [[#White Noise Generator]]
| <!-- page  --> 79
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 132
| <!-- name  --> [[#Sweep Generator]]
| <!-- page  --> 80
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 133
| <!-- name  --> [[#Multiple-Function IC Project]]
| <!-- page  --> 80
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 134
| <!-- name  --> [[#Sound Alarm]]
| <!-- page  --> 81
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 135
| <!-- name  --> [[#Photo Organ]]
| <!-- page  --> 81
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 136
| <!-- name  --> [[#Vibrato Organ]]
| <!-- page  --> 82
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 137
| <!-- name  --> [[#IC Power Amplifier]]
| <!-- page  --> 82
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 138
| <!-- name  --> [[#IC Power Amplifier II]]
| <!-- page  --> 83
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 139
| <!-- name  --> [[#Oscillator Using Power Amplifier IC]]
| <!-- page  --> 83
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 140
| <!-- name  --> [[#CdS Controlled IC Oscillator]]
| <!-- page  --> 84
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 141
| <!-- name  --> [[#Phase Shift Oscillator]]
| <!-- page  --> 84
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 142
| <!-- name  --> [[#Intercom]]
| <!-- page  --> 85
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 143
| <!-- name  --> [[#A Water Service Pipe Sound]]
| <!-- page  --> 85
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 144
| <!-- name  --> [[#Electronic Klaxon]]
| <!-- page  --> 86
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 145
| <!-- name  --> [[#Wide Range Audio Frequency Oscillator]]
| <!-- page  --> 86
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 146
| <!-- name  --> [[#Switching Circuit]]
| <!-- page  --> 87
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 147
| <!-- name  --> [[#RTL Invertor]]
| <!-- page  --> 87
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 148
| <!-- name  --> [[#RTL Buffer]]
| <!-- page  --> 88
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 149
| <!-- name  --> [[#RTL OR Gate]]
| <!-- page  --> 88
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 150
| <!-- name  --> [[#RTL AND Gate]]
| <!-- page  --> 89
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 151
| <!-- name  --> [[#Transistor OR Gate]]
| <!-- page  --> 89
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 152
| <!-- name  --> [[#Transistor AND Gate]]
| <!-- page  --> 90
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 153
| <!-- name  --> [[#Transistor XOR Gate]]
| <!-- page  --> 90
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 154
| <!-- name  --> [[#Special NAND Gate]]
| <!-- page  --> 91
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 155
| <!-- name  --> [[#DTL OR Gate]]
| <!-- page  --> 91
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 156
| <!-- name  --> [[#DTL AND Gate]]
| <!-- page  --> 92
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 157
| <!-- name  --> [[#DTL NOR Gate]]
| <!-- page  --> 92
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 158
| <!-- name  --> [[#DTL NAND Gate]]
| <!-- page  --> 93
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 159
| <!-- name  --> [[#DTL Exclusive OR Gate]]
| <!-- page  --> 93
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 160
| <!-- name  --> [[#CMOS Invertor]]
| <!-- page  --> 94
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 161
| <!-- name  --> [[#CMOS Buffer]]
| <!-- page  --> 94
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 162
| <!-- name  --> [[#CMOS OR Gate]]
| <!-- page  --> 95
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 163
| <!-- name  --> [[#CMOS AND Gate]]
| <!-- page  --> 95
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 164
| <!-- name  --> [[#CMOS 3-Input AND Gate]]
| <!-- page  --> 96
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 165
| <!-- name  --> [[#CMOS NOR Gate]]
| <!-- page  --> 96
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 166
| <!-- name  --> [[#CMOS 4-Input NOR Gate]]
| <!-- page  --> 97
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 167
| <!-- name  --> [[#CMOS 4-Input NOR Gate II]]
| <!-- page  --> 97
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 168
| <!-- name  --> [[#De Morgan's Theorem]]
| <!-- page  --> 98
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
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| <!-- review -->
|-
| <!-- number --> 169
| <!-- name  --> [[#Experiment of Threshold Voltage]]
| <!-- page  --> 98
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 170
| <!-- name  --> [[#NAND/NOR and Transistor Switch]]
| <!-- page  --> 99
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 171
| <!-- name  --> [[#CMOS XOR Gate]]
| <!-- page  --> 99
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 172
| <!-- name  --> [[#CMOS NAND Enable Circuit]]
| <!-- page  --> 100
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 173
| <!-- name  --> [[#CMOS AND Enable Circuit]]
| <!-- page  --> 100
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 174
| <!-- name  --> [[#CMOS OR Enable Circuit]]
| <!-- page  --> 101
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 175
| <!-- name  --> [[#A One-Shot NAND Gate]]
| <!-- page  --> 101
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 176
| <!-- name  --> [[#CMOS Line Selector]]
| <!-- page  --> 102
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 177
| <!-- name  --> [[#CMOS Data Selector]]
| <!-- page  --> 102
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 178
| <!-- name  --> [[#CMOS R-S Flip Flop]]
| <!-- page  --> 103
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 179
| <!-- name  --> [[#CMOS R-S Flip Flop II]]
| <!-- page  --> 103
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 180
| <!-- name  --> [[#Set/Reset Buzzer]]
| <!-- page  --> 104
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 181
| <!-- name  --> [[#Set/Reset Buzzer II]]
| <!-- page  --> 104
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 182
| <!-- name  --> [[#Set/Reset Buzzer III]]
| <!-- page  --> 105
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 183
| <!-- name  --> [[#Transistorized Toggle Flip Flop]]
| <!-- page  --> 105
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 184
| <!-- name  --> [[#NAND Toggle Flip Flop]]
| <!-- page  --> 106
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 185
| <!-- name  --> [[#J-K Toggle Flip Flop]]
| <!-- page  --> 106
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 186
| <!-- name  --> [[#CMOS Astable Multivibrator]]
| <!-- page  --> 107
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 187
| <!-- name  --> [[#CMOS J-K Flip Flop]]
| <!-- page  --> 107
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 188
| <!-- name  --> [[#CMOS D Flip Flop]]
| <!-- page  --> 108
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 189
| <!-- name  --> [[#CMOS D Flip Flop II]]
| <!-- page  --> 108
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 190
| <!-- name  --> [[#R-S-T Flip Flop]]
| <!-- page  --> 109
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 191
| <!-- name  --> [[#T Type Flip Flop]]
| <!-- page  --> 109
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 192
| <!-- name  --> [[#CMOS Latch]]
| <!-- page  --> 110
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 193
| <!-- name  --> [[#Shift Register]]
| <!-- page  --> 110
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 194
| <!-- name  --> [[#Touch Switch Using NAND Gate]]
| <!-- page  --> 111
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 195
| <!-- name  --> [[#Half Adder]]
| <!-- page  --> 111
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 196
| <!-- name  --> [[#D-Latch]]
| <!-- page  --> 112
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 197
| <!-- name  --> [[#2-Line to 4-Line Decoder]]
| <!-- page  --> 112
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 198
| <!-- name  --> [[#Multiplier]]
| <!-- page  --> 113
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 199
| <!-- name  --> [[#Dual 2-Input Multiplexer]]
| <!-- page  --> 113
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 200
| <!-- name  --> [[#Two-Stage Frequency Divider]]
| <!-- page  --> 114
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 201
| <!-- name  --> [[#Basic Counter]]
| <!-- page  --> 114
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 202
| <!-- name  --> [[#Synchronous Counter]]
| <!-- page  --> 115
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
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| <!-- review -->
|-
| <!-- number --> 203
| <!-- name  --> [[#Asynchronous Counter]]
| <!-- page  --> 115
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
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| <!-- review -->
|-
| <!-- number --> 204
| <!-- name  --> [[#Counter with Line Encoder]]
| <!-- page  --> 116
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 205
| <!-- name  --> [[#Divide by 4 Counter]]
| <!-- page  --> 116
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 206
| <!-- name  --> [[#Divide by 4 Counter with Line Decoder]]
| <!-- page  --> 117
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 207
| <!-- name  --> [[#How a Line Decoder Works]]
| <!-- page  --> 117
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 208
| <!-- name  --> [[#Multiple Counter]]
| <!-- page  --> 118
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 209
| <!-- name  --> [[#Binary Counter with Display]]
| <!-- page  --> 118
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 210
| <!-- name  --> [[#Divide by 3 Counter with Display]]
| <!-- page  --> 119
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 211
| <!-- name  --> [[#Divide by 4 Counter with Display]]
| <!-- page  --> 119
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 212
| <!-- name  --> [[#Up/Down Counter]]
| <!-- page  --> 120
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 213
| <!-- name  --> [[#Down Counter]]
| <!-- page  --> 120
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 214
| <!-- name  --> [[#Decade Down Counter]]
| <!-- page  --> 121
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 215
| <!-- name  --> [[#Decade Down Counter with Display]]
| <!-- page  --> 121
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 216
| <!-- name  --> [[#Presettable Counter]]
| <!-- page  --> 122
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 217
| <!-- name  --> [[#Hexadecimal Counter]]
| <!-- page  --> 122
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 218
| <!-- name  --> [[#Octal Counter]]
| <!-- page  --> 123
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 219
| <!-- name  --> [[#Random Access Display]]
| <!-- page  --> 123
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 220
| <!-- name  --> [[#Decade Counter]]
| <!-- page  --> 124
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 221
| <!-- name  --> [[#BCD Counter with Display]]
| <!-- page  --> 124
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 222
| <!-- name  --> [[#Octal Counter with Line Decoder]]
| <!-- page  --> 125
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 223
| <!-- name  --> [[#Octal Counter Display]]
| <!-- page  --> 125
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 224
| <!-- name  --> [[#Decade Counter with Display]]
| <!-- page  --> 126
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 225
| <!-- name  --> [[#Decade Counter with Display II]]
| <!-- page  --> 126
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 226
| <!-- name  --> [[#BCD to 7-Segment Decoder]]
| <!-- page  --> 127
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 227
| <!-- name  --> [[#Full Adder]]
| <!-- page  --> 127
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 228
| <!-- name  --> [[#Decimal to Binary Encoder]]
| <!-- page  --> 128
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
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| <!-- review -->
|-
| <!-- number --> 229
| <!-- name  --> [[#Binary to BCD]]
| <!-- page  --> 128
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 230
| <!-- name  --> [[#Octal to BCD]]
| <!-- page  --> 129
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 231
| <!-- name  --> [[#Hexadecimal to BCD]]
| <!-- page  --> 129
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 232
| <!-- name  --> [[#3-Bit Shift Register]]
| <!-- page  --> 130
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 233
| <!-- name  --> [[#VCO by NOR Gate]]
| <!-- page  --> 130
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 234
| <!-- name  --> [[#Pulse-Delayed Circuit]]
| <!-- page  --> 131
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 235
| <!-- name  --> [[#NAND Gate Tone Generator]]
| <!-- page  --> 131
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 236
| <!-- name  --> [[#Transistor Timer]]
| <!-- page  --> 132
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 237
| <!-- name  --> [[#Noise-Signal Discriminator]]
| <!-- page  --> 132
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 238
| <!-- name  --> [[#Pulse Stretcher]]
| <!-- page  --> 133
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 239
| <!-- name  --> [[#Bidirectional Buffer]]
| <!-- page  --> 133
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 240
| <!-- name  --> [[#Various Invertors]]
| <!-- page  --> 134
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 241
| <!-- name  --> [[#Electronic Switch]]
| <!-- page  --> 134
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 242
| <!-- name  --> [[#Tone Burst Generator]]
| <!-- page  --> 135
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 243
| <!-- name  --> [[#Digital Timer]]
| <!-- page  --> 135
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 244
| <!-- name  --> [[#Digital Timer II]]
| <!-- page  --> 136
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 245
| <!-- name  --> [[#Ten Count Buzzer]]
| <!-- page  --> 136
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 246
| <!-- name  --> [[#Press First]]
| <!-- page  --> 137
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 247
| <!-- name  --> [[#Target Range]]
| <!-- page  --> 137
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 248
| <!-- name  --> [[#Catch the Eight]]
| <!-- page  --> 138
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 249
| <!-- name  --> [[#SOS Alert]]
| <!-- page  --> 138
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 250
| <!-- name  --> [[#Wheel of Fortune]]
| <!-- page  --> 139
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 251
| <!-- name  --> [[#Leapin LEDs]]
| <!-- page  --> 139
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 252
| <!-- name  --> [[#Pulse Number Modulation Light Dimmer]]
| <!-- page  --> 140
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 253
| <!-- name  --> [[#Pulse Width Modulation Light Dimmer]]
| <!-- page  --> 140
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 254
| <!-- name  --> [[#DC-DC Converter Using the CMOS Oscillator]]
| <!-- page  --> 141
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 255
| <!-- name  --> [[#Absolute Value Amplifier]]
| <!-- page  --> 141
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 256
| <!-- name  --> [[#Window Comparator]]
| <!-- page  --> 142
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 257
| <!-- name  --> [[#Digital Light Dimmer]]
| <!-- page  --> 142
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 258
| <!-- name  --> [[#A-D Converter]]
| <!-- page  --> 143
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 259
| <!-- name  --> [[#D-A Converter]]
| <!-- page  --> 143
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 260
| <!-- name  --> [[#Photometer with Digital Display]]
| <!-- page  --> 144
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 261
| <!-- name  --> [[#Experiment of Electromagnetic Induction]]
| <!-- page  --> 144
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 262
| <!-- name  --> [[#Electronic Candle]]
| <!-- page  --> 145
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 263
| <!-- name  --> [[#Constant Current Circuit]]
| <!-- page  --> 145
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 264
| <!-- name  --> [[#A Phony Counter]]
| <!-- page  --> 146
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 265
| <!-- name  --> [[#Alphabet Flasher]]
| <!-- page  --> 146
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 266
| <!-- name  --> [[#Winking LEDs]]
| <!-- page  --> 147
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 267
| <!-- name  --> [[#Winking LEDs II]]
| <!-- page  --> 147
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 268
| <!-- name  --> [[#Delayed Timer II]]
| <!-- page  --> 148
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 269
| <!-- name  --> [[#Voice Level Meter]]
| <!-- page  --> 148
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 270
| <!-- name  --> [[#Crossing Signal]]
| <!-- page  --> 149
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 271
| <!-- name  --> [[#Octave Generator]]
| <!-- page  --> 149
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 272
| <!-- name  --> [[#Buzzin LED]]
| <!-- page  --> 150
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 273
| <!-- name  --> [[#Son of Buzzin LED]]
| <!-- page  --> 150
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 274
| <!-- name  --> [[#Sound Out Timer]]
| <!-- page  --> 151
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 275
| <!-- name  --> [[#Sound Stop]]
| <!-- page  --> 151
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 276
| <!-- name  --> [[#Big Mouths]]
| <!-- page  --> 152
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 277
| <!-- name  --> [[#Light or Sound]]
| <!-- page  --> 152
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 278
| <!-- name  --> [[#Be Your Own Multivibrator]]
| <!-- page  --> 153
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 279
| <!-- name  --> [[#Anticipation]]
| <!-- page  --> 153
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 280
| <!-- name  --> [[#Set/Reset Match]]
| <!-- page  --> 154
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 281
| <!-- name  --> [[#Circuit Continuity Checker]]
| <!-- page  --> 154
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 282
| <!-- name  --> [[#Acoustic Ohmmeter]]
| <!-- page  --> 155
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 283
| <!-- name  --> [[#Audio Signal Tracer]]
| <!-- page  --> 155
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 284
| <!-- name  --> [[#Audio Signal Generator]]
| <!-- page  --> 156
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 285
| <!-- name  --> [[#Metal Detector]]
| <!-- page  --> 156
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 286
| <!-- name  --> [[#Rain Detector]]
| <!-- page  --> 157
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 287
| <!-- name  --> [[#Burglar Alarm]]
| <!-- page  --> 157
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 288
| <!-- name  --> [[#Temperature-Sensitive Audio Amplifier]]
| <!-- page  --> 158
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 289
| <!-- name  --> [[#Water Level Detector]]
| <!-- page  --> 158
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 290
| <!-- name  --> [[#Battery Checker]]
| <!-- page  --> 159
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 291
| <!-- name  --> [[#Conductivity Tester]]
| <!-- page  --> 159
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 292
| <!-- name  --> [[#IC Oscillator/Component Tester]]
| <!-- page  --> 160
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 293
| <!-- name  --> [[#Voltage Drop Alarm]]
| <!-- page  --> 160
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 294
| <!-- name  --> [[#Transistor Checker]]
| <!-- page  --> 161
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 295
| <!-- name  --> [[#Current Shut-Down Circuit]]
| <!-- page  --> 161
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 296
| <!-- name  --> [[#Logic Checker]]
| <!-- page  --> 162
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 297
| <!-- name  --> [[#Logic Checker II]]
| <!-- page  --> 162
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 298
| <!-- name  --> [[#Three-Step Water Level Indicator]]
| <!-- page  --> 163
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 299
| <!-- name  --> [[#Temperature Alarm]]
| <!-- page  --> 163
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|-
| <!-- number --> 300
| <!-- name  --> [[#Function Generator]]
| <!-- page  --> 164
| <!-- date  -->
| <!-- made  -->
| <!-- worked -->
| <!-- build  -->
| <!-- review -->
|}
|}


Line 67: Line 2,768:
=== American Patrol Car Siren ===
=== American Patrol Car Siren ===


<youtube>W43VxTAbYrc</youtube>
<youtube>W43VxTAbYrc</youtube><br>Just testing...


This circuit uses an astable [https://en.wikipedia.org/wiki/Multivibrator multivibrator].
This circuit uses an astable [https://en.wikipedia.org/wiki/Multivibrator multivibrator].
Line 125: Line 2,826:
=== How a Multivibrator Works ===
=== How a Multivibrator Works ===


=== A "One-Shot" Multivibrator ===
=== A One-Shot Multivibrator ===


=== An R-S Flip Flop ===
=== An R-S Flip Flop ===
Line 159: Line 2,860:
=== Rapid LED Display Switching ===
=== Rapid LED Display Switching ===


=== Code Practice Unit 1 ===
=== Code Practice Unit ===


=== Twin-TAudio Oscillator ===
=== Twin-T Audio Oscillator ===


=== Current Switch ===
=== Current Switch ===
Line 169: Line 2,870:
=== Variable A-C Oscillator ===
=== Variable A-C Oscillator ===


=== TWO-Tone Buzzer ===
=== Two-Tone Buzzer ===


=== Sawtooth Wave Oscillator ===
=== Sawtooth Wave Oscillator ===
Line 177: Line 2,878:
=== Monostable Multivibrator ===
=== Monostable Multivibrator ===


=== Code Practice Unit 2 ===
=== Code Practice Unit II ===


=== The Noisy Light ===
=== The Noisy Light ===
Line 196: Line 2,897:


== Radio Circuits ==
== Radio Circuits ==
=== Crystal Set Radio ===
=== Funny Transistor Radio ===
=== Wireless Code Transmitter ===
=== Remote Water Level Detector ===
=== IC Radio ===
=== Morse Code Transmitter ===
=== AM Transmitter ===
=== Broadcasting Organ ===


== Sonic Zoo and Sound Factory ==
== Sonic Zoo and Sound Factory ==
=== Two-Tone Patrol Car Siren ===
=== Plant Growth Stimulator ===
=== Electronic Woodpecker ===
=== Fish Caller ===
=== Electronic Raindrops ===
=== Pencil Lead Organ ===
=== Electronic Motorcycle ===
=== Machine Gun Pulse Detector ===
=== Electronic Siren ===
=== Chirping Bird ===
=== Electronic Cat ===
=== Electronic Bird ===
=== Horror Movie Sound Effect ===
=== Electronic Organ ===
=== Sound Machine ===
=== Sound Machine II ===
=== Multi-Tone Siren ===
=== Digital Rhythm ===
=== Two-IC Electric Organ ===


== Electronic Decision-Makers ==
== Electronic Decision-Makers ==
=== Majority Logic Gate ===
=== Electronic Coin Toss ===
=== Electronic Coin Toss II ===
=== Electronic Coin Toss III ===
=== Even or Odd ===
=== Quick Draw Gate ===
=== Close in ===
=== ESP Tester ===
=== The Light Fantastic ===
=== Shooting Game ===
=== Marching LEDs ===
=== Electronic Dice ===
=== Electronic Roulette ===


== Operational Amplifier IC Can Do Many Things ==
== Operational Amplifier IC Can Do Many Things ==
=== Meet the VCO ===
=== Silicon Diode Solar Cell ===
=== Integrating Circuit ===
=== Astable Multivibrator Using OP Amplifier ===
=== Pulse Generator ===
=== Comparator ===
=== Experiment of Comparator ===
=== Comparator with Hysteresis ===
=== Constant Current Sources by OP Amplifier ===
=== Non-Inverting Adder ===
=== Schmitt Trigger Circuit ===
=== Delayed Timer ===
=== Pulse Frequency Doubler ===
=== Touch Switch Using OP Amplifier ===
=== Early Bird ===
=== DC-DC Converter by OP Amplifier ===
=== Inverting Amplifier ===
=== Non-Inverting Amplifier ===
=== Differential Amplifier ===
=== Differential Output Amplifier ===
=== Power Amplifier Using OP Amplifier ===
=== Balanced Transformerless Amplifier ===
=== Three-Stage Differential Amplifier ===
=== VCO Using OP Amplifier ===
=== Voltage Controlled Amplifier ===
=== V-F Converter ===
=== F-V Converter ===
=== White Noise Generator ===
=== Sweep Generator ===
=== Multiple-Function IC Project ===
=== Sound Alarm ===
=== Photo Organ ===
=== Vibrato Organ ===


== Introducing the Power Amplifier IC ==
== Introducing the Power Amplifier IC ==
=== IC Power Amplifier ===
=== IC Power Amplifier II ===
=== Oscillator Using Power Amplifier IC ===
=== CdS Controlled IC Oscillator ===
=== Phase Shift Oscillator ===
=== Intercom ===
=== A Water Service Pipe Sound ===
=== Electronic Klaxon ===
=== Wide Range Audio Frequency Oscillator ===


== A Trip to Digital Land ==
== A Trip to Digital Land ==
=== Switching Circuit ===
=== RTL Invertor ===
=== RTL Buffer ===
=== RTL OR Gate ===
=== RTL AND Gate ===
=== Transistor OR Gate ===
=== Transistor AND Gate ===
=== Transistor XOR Gate ===
=== Special NAND Gate ===
=== DTL OR Gate ===
=== DTL AND Gate ===
=== DTL NOR Gate ===
=== DTL NAND Gate ===
=== DTL Exclusive OR Gate ===
=== CMOS Invertor ===
=== CMOS Buffer ===
=== CMOS OR Gate ===
=== CMOS AND Gate ===
=== CMOS 3-Input AND Gate ===
=== CMOS NOR Gate ===
=== CMOS 4-Input NOR Gate ===
=== CMOS 4-Input NOR Gate II ===
=== De Morgan's Theorem ===
=== Experiment of Threshold Voltage ===
=== NAND/NOR and Transistor Switch ===


== More Adventures in Digital Land ==
== More Adventures in Digital Land ==
=== CMOS XOR Gate ===
=== CMOS NAND Enable Circuit ===
=== CMOS AND Enable Circuit ===
=== CMOS OR Enable Circuit ===
=== A One-Shot NAND Gate ===
=== CMOS Line Selector ===
=== CMOS Data Selector ===
=== CMOS R-S Flip Flop ===
=== CMOS R-S Flip Flop II ===
=== Set/Reset Buzzer ===
=== Set/Reset Buzzer II ===
=== Set/Reset Buzzer III ===
=== Transistorized Toggle Flip Flop ===
=== NAND Toggle Flip Flop ===
=== J-K Toggle Flip Flop ===
=== CMOS Astable Multivibrator ===
=== CMOS J-K Flip Flop ===
=== CMOS D Flip Flop ===
=== CMOS D Flip Flop II ===
=== R-S-T Flip Flop ===
=== T Type Flip Flop ===
=== CMOS Latch ===
=== Shift Register ===
=== Touch Switch Using NAND Gate ===
=== Half Adder ===
=== D-Latch ===
=== 2-Line to 4-Line Decoder ===
=== Multiplier ===
=== Dual 2-Input Multiplexer ===
=== Two-Stage Frequency Divider ===


== Circuits That Count ==
== Circuits That Count ==
=== Basic Counter ===
=== Synchronous Counter ===
=== Asynchronous Counter ===
=== Counter with Line Encoder ===
=== Divide by 4 Counter ===
=== Divide by 4 Counter with Line Decoder ===
=== How a Line Decoder Works ===
=== Multiple Counter ===
=== Binary Counter with Display ===
=== Divide by 3 Counter with Display ===
=== Divide by 4 Counter with Display ===
=== Up/Down Counter ===
=== Down Counter ===
=== Decade Down Counter ===
=== Decade Down Counter with Display ===
=== Presettable Counter ===
=== Hexadecimal Counter ===
=== Octal Counter ===
=== Random Access Display ===
=== Decade Counter ===
=== BCD Counter with Display ===
=== Octal Counter with Line Decoder ===
=== Octal Counter Display ===
=== Decade Counter with Display ===
=== Decade Counter with Display II ===


== Getting Closer to Computers ==
== Getting Closer to Computers ==
=== BCD to 7-Segment Decoder ===
=== Full Adder ===
=== Decimal to Binary Encoder ===
=== Binary to BCD ===
=== Octal to BCD ===
=== Hexadecimal to BCD ===
=== 3-Bit Shift Register ===


== Amusement in Digital Land ==
== Amusement in Digital Land ==
=== VCO by NOR Gate ===
=== Pulse-Delayed Circuit ===
=== NAND Gate Tone Generator ===
=== Transistor Timer ===
=== Noise-Signal Discriminator ===
=== Pulse Stretcher ===
=== Bidirectional Buffer ===
=== Various Invertors ===
=== Electronic Switch ===
=== Tone Burst Generator ===
=== Digital Timer ===
=== Digital Timer II ===
=== Ten Count Buzzer ===
=== Press First ===
=== Target Range ===
=== Catch the Eight ===
=== SOS Alert ===
=== Wheel of Fortune ===
=== Leapin LEDs ===


== Analog meets Digital ==
== Analog meets Digital ==
=== Pulse Number Modulation Light Dimmer ===
=== Pulse Width Modulation Light Dimmer ===
=== DC-DC Converter Using the CMOS Oscillator ===
=== Absolute Value Amplifier ===
=== Window Comparator ===
=== Digital Light Dimmer ===
=== A-D Converter ===
=== D-A Converter ===
=== Photometer with Digital Display ===


== Surprise and Fun Revisited ==
== Surprise and Fun Revisited ==
=== Experiment of Electromagnetic Induction ===
=== Electronic Candle ===
=== Constant Current Circuit ===
=== A Phony Counter ===
=== Alphabet Flasher ===
=== Winking LEDs ===
=== Winking LEDs II ===
=== Delayed Timer II ===
=== Voice Level Meter ===
=== Crossing Signal ===
=== Octave Generator ===
=== Buzzin LED ===
=== Son of Buzzin LED ===
=== Sound Out Timer ===
=== Sound Stop ===
=== Big Mouths ===
=== Light or Sound ===
=== Be Your Own Multivibrator ===
=== Anticipation ===
=== Set/Reset Match ===


== Testing and Measuring Circuits ==
== Testing and Measuring Circuits ==
=== Circuit Continuity Checker ===
=== Acoustic Ohmmeter ===
=== Audio Signal Tracer ===
=== Audio Signal Generator ===
=== Metal Detector ===
=== Rain Detector ===
=== Burglar Alarm ===
=== Temperature-Sensitive Audio Amplifier ===
=== Water Level Detector ===
=== Battery Checker ===
=== Conductivity Tester ===
=== IC Oscillator/Component Tester ===
=== Voltage Drop Alarm ===
=== Transistor Checker ===
=== Current Shut-Down Circuit ===
=== Logic Checker ===
=== Logic Checker II ===
=== Three-Step Water Level Indicator ===
=== Temperature Alarm ===
=== Function Generator ===

Latest revision as of 19:17, 9 October 2022

Hi there. I'm John. I have a 300in1 electronic project lab in my lab, and I am slowly making my way through the projects as part of my electronics hobby. The various projects are listed in the sample manual and duplicated in the projects section below. There are some admin notes for John's use.

Notes

Long leg (anode) positive.

Short leg (cathode) negative. (Line/band near cathode).

Emitter - Collector - Base

Hold Apple Key when dragging to 'move' files

https://www.jj5.net/sixsigma/300in1

Diodes

Type Number Forward voltage (Uf) Capacitance (C)
Switching Diode 2S2473 697mV 10pF
Rectifier Diode IN4001 668mV 32pF
Zener Diode C4V7ST 4.48V 800mV
Germanium Diode IN60P 298mV 32pF

Table

# Project Page Date Made Worked Build Review
001 #Light-Controlled Bird 12
002 #Transistor Radio 13
003 #Sound Scooper 14
004 #American Patrol Car Siren 15 2018-03-17 ✓ ✓ review
005 #Digital Roulette 16
006 #IC Organ 16
007 #Light Telegraph 17
008 #Introducing the Resistor 17
009 #Parallel Resistor 18
010 #Meet the Diode 18
011 #The LED - a Special Diode 19
012 #The Electronic Gas Tank 19
013 #Capacitors in Series and Parallel 20
014 #Meet the Transistor 20
015 #Transistor as switches 21
016 #PNP Transistor Switch 22
017 #NPN Transistor Switch 22
018 #Delay Light 23
019 #Night Light 23
020 #Electronic Timer 24
021 #Capital Letter Display 24
022 #Small Letter Display 25
023 #Number Display 25
024 #An Invertor Circuit 26
025 #Meet the OR Gate 26
026 #Introducing the AND Gate 27
027 #Using the NOR Gate 27
028 #Meet the NAND Gate 28
029 #How a Multivibrator Works 28
030 #A One-Shot Multivibrator 29
031 #An R-S Flip Flop 29
032 #Meet the Oscillator 30
033 #Changing Oscillation with Capacitor 30
034 #Changing Oscillation with Foreign Substance 31
035 #More about Oscillator 31
036 #A Push-Pull Oscillator 32
037 #Low Distortion Sinewave Oscillator 32
038 #Strobe Light 33
039 #CdS Controlled Oscillator 33
040 #Frequency Shift Oscillator 34
041 #Electronic Grandfather Clock 34
042 #Electronic Metronome 35
043 #Motion Detector 35
044 #Door Alarm 36
045 #Rapid LED Display Switching 36
046 #Code Practice Unit 37
047 #Twin-T Audio Oscillator 37
048 #Current Switch 38
049 #Shot in the Dark 38
050 #Variable A-C Oscillator 39
051 #Two-Tone Buzzer 39
052 #Sawtooth Wave Oscillator 40
053 #Astable Multivibrator 40
054 #Monostable Multivibrator 41
055 #Code Practice Unit II 41
056 #The Noisy Light 42
057 #Hearing Aid Amplifier 42
058 #Light/Sound Code Practice Unit 43
059 #Light Controlled Burglar Alarm 43
060 #DC-DC Converter 44
061 #Count Down Timer 44
062 #Transistor Frequency Doubler 45
063 #One Transistor Full-Wave Rectifier 45
064 #Crystal Set Radio 46
065 #Funny Transistor Radio 46
066 #Wireless Code Transmitter 47
067 #Remote Water Level Detector 47
068 #IC Radio 48
069 #Morse Code Transmitter 48
070 #AM Transmitter 49
071 #Broadcasting Organ 49
072 #Two-Tone Patrol Car Siren 50
073 #Plant Growth Stimulator 50
074 #Electronic Woodpecker 51
075 #Fish Caller 51
076 #Electronic Raindrops 52
077 #Pencil Lead Organ 52
078 #Electronic Motorcycle 53
079 #Machine Gun Pulse Detector 53
080 #Electronic Siren 54
081 #Chirping Bird 54
082 #Electronic Cat 55
083 #Electronic Bird 55
084 #Horror Movie Sound Effect 56
085 #Electronic Organ 56
086 #Sound Machine 57
087 #Sound Machine II 57
088 #Multi-Tone Siren 58
089 #Digital Rhythm 58
090 #Two-IC Electric Organ 59
091 #Majority Logic Gate 59
092 #Electronic Coin Toss 60
093 #Electronic Coin Toss II 60
094 #Electronic Coin Toss III 61
095 #Even or Odd 61
096 #Quick Draw Gate 62
097 #Close in 62
098 #ESP Tester 63
099 #The Light Fantastic 63
100 #Shooting Game 64
101 #Marching LEDs 64
102 #Electronic Dice 65
103 #Electronic Roulette 65
104 #Meet the VCO 66
105 #Silicon Diode Solar Cell 66
106 #Integrating Circuit 67
107 #Astable Multivibrator Using OP Amplifier 67
108 #Pulse Generator 68
109 #Comparator 68
110 #Experiment of Comparator 69
111 #Comparator with Hysteresis 69
112 #Constant Current Sources by OP Amplifier 70
113 #Non-Inverting Adder 70
114 #Schmitt Trigger Circuit 71
115 #Delayed Timer 71
116 #Pulse Frequency Doubler 72
117 #Touch Switch Using OP Amplifier 72
118 #Early Bird 73
119 #DC-DC Converter by OP Amplifier 73
120 #Inverting Amplifier 74
121 #Non-Inverting Amplifier 74
122 #Differential Amplifier 75
123 #Differential Output Amplifier 75
124 #Power Amplifier Using OP Amplifier 76
125 #Balanced Transformerless Amplifier 76
126 #Three-Stage Differential Amplifier 77
127 #VCO Using OP Amplifier 77
128 #Voltage Controlled Amplifier 78
129 #V-F Converter 78
130 #F-V Converter 79
131 #White Noise Generator 79
132 #Sweep Generator 80
133 #Multiple-Function IC Project 80
134 #Sound Alarm 81
135 #Photo Organ 81
136 #Vibrato Organ 82
137 #IC Power Amplifier 82
138 #IC Power Amplifier II 83
139 #Oscillator Using Power Amplifier IC 83
140 #CdS Controlled IC Oscillator 84
141 #Phase Shift Oscillator 84
142 #Intercom 85
143 #A Water Service Pipe Sound 85
144 #Electronic Klaxon 86
145 #Wide Range Audio Frequency Oscillator 86
146 #Switching Circuit 87
147 #RTL Invertor 87
148 #RTL Buffer 88
149 #RTL OR Gate 88
150 #RTL AND Gate 89
151 #Transistor OR Gate 89
152 #Transistor AND Gate 90
153 #Transistor XOR Gate 90
154 #Special NAND Gate 91
155 #DTL OR Gate 91
156 #DTL AND Gate 92
157 #DTL NOR Gate 92
158 #DTL NAND Gate 93
159 #DTL Exclusive OR Gate 93
160 #CMOS Invertor 94
161 #CMOS Buffer 94
162 #CMOS OR Gate 95
163 #CMOS AND Gate 95
164 #CMOS 3-Input AND Gate 96
165 #CMOS NOR Gate 96
166 #CMOS 4-Input NOR Gate 97
167 #CMOS 4-Input NOR Gate II 97
168 #De Morgan's Theorem 98
169 #Experiment of Threshold Voltage 98
170 #NAND/NOR and Transistor Switch 99
171 #CMOS XOR Gate 99
172 #CMOS NAND Enable Circuit 100
173 #CMOS AND Enable Circuit 100
174 #CMOS OR Enable Circuit 101
175 #A One-Shot NAND Gate 101
176 #CMOS Line Selector 102
177 #CMOS Data Selector 102
178 #CMOS R-S Flip Flop 103
179 #CMOS R-S Flip Flop II 103
180 #Set/Reset Buzzer 104
181 #Set/Reset Buzzer II 104
182 #Set/Reset Buzzer III 105
183 #Transistorized Toggle Flip Flop 105
184 #NAND Toggle Flip Flop 106
185 #J-K Toggle Flip Flop 106
186 #CMOS Astable Multivibrator 107
187 #CMOS J-K Flip Flop 107
188 #CMOS D Flip Flop 108
189 #CMOS D Flip Flop II 108
190 #R-S-T Flip Flop 109
191 #T Type Flip Flop 109
192 #CMOS Latch 110
193 #Shift Register 110
194 #Touch Switch Using NAND Gate 111
195 #Half Adder 111
196 #D-Latch 112
197 #2-Line to 4-Line Decoder 112
198 #Multiplier 113
199 #Dual 2-Input Multiplexer 113
200 #Two-Stage Frequency Divider 114
201 #Basic Counter 114
202 #Synchronous Counter 115
203 #Asynchronous Counter 115
204 #Counter with Line Encoder 116
205 #Divide by 4 Counter 116
206 #Divide by 4 Counter with Line Decoder 117
207 #How a Line Decoder Works 117
208 #Multiple Counter 118
209 #Binary Counter with Display 118
210 #Divide by 3 Counter with Display 119
211 #Divide by 4 Counter with Display 119
212 #Up/Down Counter 120
213 #Down Counter 120
214 #Decade Down Counter 121
215 #Decade Down Counter with Display 121
216 #Presettable Counter 122
217 #Hexadecimal Counter 122
218 #Octal Counter 123
219 #Random Access Display 123
220 #Decade Counter 124
221 #BCD Counter with Display 124
222 #Octal Counter with Line Decoder 125
223 #Octal Counter Display 125
224 #Decade Counter with Display 126
225 #Decade Counter with Display II 126
226 #BCD to 7-Segment Decoder 127
227 #Full Adder 127
228 #Decimal to Binary Encoder 128
229 #Binary to BCD 128
230 #Octal to BCD 129
231 #Hexadecimal to BCD 129
232 #3-Bit Shift Register 130
233 #VCO by NOR Gate 130
234 #Pulse-Delayed Circuit 131
235 #NAND Gate Tone Generator 131
236 #Transistor Timer 132
237 #Noise-Signal Discriminator 132
238 #Pulse Stretcher 133
239 #Bidirectional Buffer 133
240 #Various Invertors 134
241 #Electronic Switch 134
242 #Tone Burst Generator 135
243 #Digital Timer 135
244 #Digital Timer II 136
245 #Ten Count Buzzer 136
246 #Press First 137
247 #Target Range 137
248 #Catch the Eight 138
249 #SOS Alert 138
250 #Wheel of Fortune 139
251 #Leapin LEDs 139
252 #Pulse Number Modulation Light Dimmer 140
253 #Pulse Width Modulation Light Dimmer 140
254 #DC-DC Converter Using the CMOS Oscillator 141
255 #Absolute Value Amplifier 141
256 #Window Comparator 142
257 #Digital Light Dimmer 142
258 #A-D Converter 143
259 #D-A Converter 143
260 #Photometer with Digital Display 144
261 #Experiment of Electromagnetic Induction 144
262 #Electronic Candle 145
263 #Constant Current Circuit 145
264 #A Phony Counter 146
265 #Alphabet Flasher 146
266 #Winking LEDs 147
267 #Winking LEDs II 147
268 #Delayed Timer II 148
269 #Voice Level Meter 148
270 #Crossing Signal 149
271 #Octave Generator 149
272 #Buzzin LED 150
273 #Son of Buzzin LED 150
274 #Sound Out Timer 151
275 #Sound Stop 151
276 #Big Mouths 152
277 #Light or Sound 152
278 #Be Your Own Multivibrator 153
279 #Anticipation 153
280 #Set/Reset Match 154
281 #Circuit Continuity Checker 154
282 #Acoustic Ohmmeter 155
283 #Audio Signal Tracer 155
284 #Audio Signal Generator 156
285 #Metal Detector 156
286 #Rain Detector 157
287 #Burglar Alarm 157
288 #Temperature-Sensitive Audio Amplifier 158
289 #Water Level Detector 158
290 #Battery Checker 159
291 #Conductivity Tester 159
292 #IC Oscillator/Component Tester 160
293 #Voltage Drop Alarm 160
294 #Transistor Checker 161
295 #Current Shut-Down Circuit 161
296 #Logic Checker 162
297 #Logic Checker II 162
298 #Three-Step Water Level Indicator 163
299 #Temperature Alarm 163
300 #Function Generator 164

Projects

Surprise and Fun

Light-Controlled Bird

Transistor Radio

Sound Scooper

American Patrol Car Siren


Just testing...

This circuit uses an astable multivibrator.

Digital Roulette

IC Organ

Back to the Basics

Light Telegraph

Introducing the Resistor

Parallel Resistor

Meet the Diode

The LED - a Special Diode

The Electronic Gas Tank

Capacitors in Series and Parallel

Meet the Transistor

Transistor as switches

PNP Transistor Switch

NPN Transistor Switch

Delay Light

Night Light

Electronic Timer

Capital Letter Display

Small Letter Display

Number Display

Electronic Building Blocks

An Invertor Circuit

Meet the OR Gate

Introducing the AND Gate

Using the NOR Gate

Meet the NAND Gate

How a Multivibrator Works

A One-Shot Multivibrator

An R-S Flip Flop

Meet the Oscillator

Changing Oscillation with Capacitor

Changing Oscillation with Foreign Substance

More about Oscillator

A Push-Pull Oscillator

Low Distortion Sinewave Oscillator

Putting Electronics to Work

Strobe Light

CdS Controlled Oscillator

Frequency Shift Oscillator

Electronic Grandfather Clock

Electronic Metronome

Motion Detector

Door Alarm

Rapid LED Display Switching

Code Practice Unit

Twin-T Audio Oscillator

Current Switch

Shot in the Dark

Variable A-C Oscillator

Two-Tone Buzzer

Sawtooth Wave Oscillator

Astable Multivibrator

Monostable Multivibrator

Code Practice Unit II

The Noisy Light

Hearing Aid Amplifier

Light/Sound Code Practice Unit

Light Controlled Burglar Alarm

DC-DC Converter

Count Down Timer

Transistor Frequency Doubler

One Transistor Full-Wave Rectifier

Radio Circuits

Crystal Set Radio

Funny Transistor Radio

Wireless Code Transmitter

Remote Water Level Detector

IC Radio

Morse Code Transmitter

AM Transmitter

Broadcasting Organ

Sonic Zoo and Sound Factory

Two-Tone Patrol Car Siren

Plant Growth Stimulator

Electronic Woodpecker

Fish Caller

Electronic Raindrops

Pencil Lead Organ

Electronic Motorcycle

Machine Gun Pulse Detector

Electronic Siren

Chirping Bird

Electronic Cat

Electronic Bird

Horror Movie Sound Effect

Electronic Organ

Sound Machine

Sound Machine II

Multi-Tone Siren

Digital Rhythm

Two-IC Electric Organ

Electronic Decision-Makers

Majority Logic Gate

Electronic Coin Toss

Electronic Coin Toss II

Electronic Coin Toss III

Even or Odd

Quick Draw Gate

Close in

ESP Tester

The Light Fantastic

Shooting Game

Marching LEDs

Electronic Dice

Electronic Roulette

Operational Amplifier IC Can Do Many Things

Meet the VCO

Silicon Diode Solar Cell

Integrating Circuit

Astable Multivibrator Using OP Amplifier

Pulse Generator

Comparator

Experiment of Comparator

Comparator with Hysteresis

Constant Current Sources by OP Amplifier

Non-Inverting Adder

Schmitt Trigger Circuit

Delayed Timer

Pulse Frequency Doubler

Touch Switch Using OP Amplifier

Early Bird

DC-DC Converter by OP Amplifier

Inverting Amplifier

Non-Inverting Amplifier

Differential Amplifier

Differential Output Amplifier

Power Amplifier Using OP Amplifier

Balanced Transformerless Amplifier

Three-Stage Differential Amplifier

VCO Using OP Amplifier

Voltage Controlled Amplifier

V-F Converter

F-V Converter

White Noise Generator

Sweep Generator

Multiple-Function IC Project

Sound Alarm

Photo Organ

Vibrato Organ

Introducing the Power Amplifier IC

IC Power Amplifier

IC Power Amplifier II

Oscillator Using Power Amplifier IC

CdS Controlled IC Oscillator

Phase Shift Oscillator

Intercom

A Water Service Pipe Sound

Electronic Klaxon

Wide Range Audio Frequency Oscillator

A Trip to Digital Land

Switching Circuit

RTL Invertor

RTL Buffer

RTL OR Gate

RTL AND Gate

Transistor OR Gate

Transistor AND Gate

Transistor XOR Gate

Special NAND Gate

DTL OR Gate

DTL AND Gate

DTL NOR Gate

DTL NAND Gate

DTL Exclusive OR Gate

CMOS Invertor

CMOS Buffer

CMOS OR Gate

CMOS AND Gate

CMOS 3-Input AND Gate

CMOS NOR Gate

CMOS 4-Input NOR Gate

CMOS 4-Input NOR Gate II

De Morgan's Theorem

Experiment of Threshold Voltage

NAND/NOR and Transistor Switch

More Adventures in Digital Land

CMOS XOR Gate

CMOS NAND Enable Circuit

CMOS AND Enable Circuit

CMOS OR Enable Circuit

A One-Shot NAND Gate

CMOS Line Selector

CMOS Data Selector

CMOS R-S Flip Flop

CMOS R-S Flip Flop II

Set/Reset Buzzer

Set/Reset Buzzer II

Set/Reset Buzzer III

Transistorized Toggle Flip Flop

NAND Toggle Flip Flop

J-K Toggle Flip Flop

CMOS Astable Multivibrator

CMOS J-K Flip Flop

CMOS D Flip Flop

CMOS D Flip Flop II

R-S-T Flip Flop

T Type Flip Flop

CMOS Latch

Shift Register

Touch Switch Using NAND Gate

Half Adder

D-Latch

2-Line to 4-Line Decoder

Multiplier

Dual 2-Input Multiplexer

Two-Stage Frequency Divider

Circuits That Count

Basic Counter

Synchronous Counter

Asynchronous Counter

Counter with Line Encoder

Divide by 4 Counter

Divide by 4 Counter with Line Decoder

How a Line Decoder Works

Multiple Counter

Binary Counter with Display

Divide by 3 Counter with Display

Divide by 4 Counter with Display

Up/Down Counter

Down Counter

Decade Down Counter

Decade Down Counter with Display

Presettable Counter

Hexadecimal Counter

Octal Counter

Random Access Display

Decade Counter

BCD Counter with Display

Octal Counter with Line Decoder

Octal Counter Display

Decade Counter with Display

Decade Counter with Display II

Getting Closer to Computers

BCD to 7-Segment Decoder

Full Adder

Decimal to Binary Encoder

Binary to BCD

Octal to BCD

Hexadecimal to BCD

3-Bit Shift Register

Amusement in Digital Land

VCO by NOR Gate

Pulse-Delayed Circuit

NAND Gate Tone Generator

Transistor Timer

Noise-Signal Discriminator

Pulse Stretcher

Bidirectional Buffer

Various Invertors

Electronic Switch

Tone Burst Generator

Digital Timer

Digital Timer II

Ten Count Buzzer

Press First

Target Range

Catch the Eight

SOS Alert

Wheel of Fortune

Leapin LEDs

Analog meets Digital

Pulse Number Modulation Light Dimmer

Pulse Width Modulation Light Dimmer

DC-DC Converter Using the CMOS Oscillator

Absolute Value Amplifier

Window Comparator

Digital Light Dimmer

A-D Converter

D-A Converter

Photometer with Digital Display

Surprise and Fun Revisited

Experiment of Electromagnetic Induction

Electronic Candle

Constant Current Circuit

A Phony Counter

Alphabet Flasher

Winking LEDs

Winking LEDs II

Delayed Timer II

Voice Level Meter

Crossing Signal

Octave Generator

Buzzin LED

Son of Buzzin LED

Sound Out Timer

Sound Stop

Big Mouths

Light or Sound

Be Your Own Multivibrator

Anticipation

Set/Reset Match

Testing and Measuring Circuits

Circuit Continuity Checker

Acoustic Ohmmeter

Audio Signal Tracer

Audio Signal Generator

Metal Detector

Rain Detector

Burglar Alarm

Temperature-Sensitive Audio Amplifier

Water Level Detector

Battery Checker

Conductivity Tester

IC Oscillator/Component Tester

Voltage Drop Alarm

Transistor Checker

Current Shut-Down Circuit

Logic Checker

Logic Checker II

Three-Step Water Level Indicator

Temperature Alarm

Function Generator

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