Electronic Circuits

Here are some neat circuits you might want to try. The schematics and printed circuit board patterns are GIF's, and may show up different on some browsers. You might want to save the images (especially the PC board patterns) to your hard drive, load them into a photo editor (Photoshop, Paint Shop Pro, The GIMP, etc.) and adjust the size before you transfer the pattern to a board. Printed circuit board patterns are available possible. This page is always under construction and there will be new additions from time to time. Some of these circuits were designed by me, most are not. Whenever possible I have tried to credit the author of a circuit but since many of these circuits are from my personal collection that I have gathered over a period of many years, this information is not always available.

You can rank circuits according to how much you like a circuit by clicking on the lightning bolt icons. These ranks can be based on how much you like a circuit, whether a circuit worked or didn't work for you, or how useful you found a circuit. Additionally you can add your own comments at the bottom of each circuit by filling out the form.

Circuit Catagories

Circuits are divided into categories as listed below.

Catagory	Circuits
Auto	3
Computer	2
Light/Laser	21
Major Projects	2
Other	21
Power Supply	18
Sound/Radio	22
Telephone	8

Some circuits in this list have little astrisk (*) markers beside them which give a basic amount of information regarding whether the circuit has been designed, tested or modified by the webmaster.

Marker	Description
*	The circuit has not been tested by me. Therefore, I will offer no gaurantee that they will work.
*	This circuit has been designed by me.
*	This circuit was not designed by me, but was modified by me.

Most Popular Circuits

The most popular circuits of today, yesterday and all time can be found below.

When	Circuit	Views
Today Friday, August 12, 2022	Solid State Tesla Coil	8
	Simple Touch Switch	7
Yesterday Thursday, August 11, 2022	12VDC To 120VAC Inverter	35
	Aircraft Radio Communications Receiver	33
Of All Time	12VDC To 120VAC Inverter	1,504,035
	FM Transmitter	993,580

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		222,169		61	*
Car Alarm Arming Horn Beep Canceller	bob	132,145		6	*
Wireless Auto Tachometer		337,179		58

Computer

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computer Controlled Frequency Counter/Logic Probe	Richard van Wyk	155,653		29	*
Parallel (Printer) Port Interface		278,825		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		440,688		63	*
3 Channel Spectrum Analyzer		215,577		20
40W Fluorescent Lamp Inverter	Bart Milnes	324,720		60	*
Adjustable Strobe Light		302,460		36
Black Light		270,987		29
Colour (Sound) Organ		284,123		36
Electronic Dice NEW!		183,685		10	*
Fantastic Atom Expander		198,360		25
Flash Slave Trigger		215,217		18	*
Infa-Red Remote Control		627,410		216	*
IR Remote Extender NEW!		126,886		2	*
IR Remote Jammer	Carl	259,332		110	*
IR Remote Switch NEW!		153,051		9	*
LASER Transmitter/Receiver		406,783		92
LED Chaser		438,789		83	*
LED Metronome NEW!		95,398		3	*
LED Thermometer		202,195		22	*
Light/Dark Detector		301,494		90	*
Simple Colour Organ		133,440		10	*
Strobe Light		270,172		27	*
TRIAC Light Dimmer		544,259		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		353,625		122	*
Electromagnetic Levitator NEW!		139,436		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		914,329		214	*
AC Motor Speed Controller		381,493		29	*
Air Flow Detector		246,840		54	*
Digital Keypad Combination Lock		192,145		20
Low Voltage Alarm		224,330		58	*
Pine Racecar Victory Judge		99,034		1	*
Pulse Width Modulation DC Motor Control		642,096		94
Rain Detector		299,702		112	*
Simple Lie Detector		554,477		323
Simple Polarity Tester	Dudley LeRoux	160,467		13	*
Simple Servo Controller		216,199		22	*
Simple Touch Switch NEW!		164,818		5	*
Simple Two Speed Contactor DC Motor Controller		200,026		21	*
Stepper Motor Controller		736,564		120	*
Time Delay Relay		549,613		88
Time Delay Relay II	jawaharlal@excite.com	240,275		39	*
Touch Switch		284,493		51	*
Video Activated Relay		117,443		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	174,999		10	*
Water Detector With Sump/Bilge Pump Controller		148,173		18	*
Wire Loop Alarm	Alex Meaden	201,232		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		307,076		25	*
12VDC To 120VAC Inverter		1,504,035		690
6V to 12V Converter		518,913		121
Automatic 12V Lead Acid Battery Charger		927,710		248
Automatic Load Sensing Power Switch		162,021		16	*
Car Battery Charger		874,442		159	*
Dual Polarity Power Supply		364,965		84	*
Fixed Voltage Power Supply		305,140		52	*
High Current Power Supply		330,703		66	*
High Voltage High Current Power Supply		247,388		35	*
LASER Power Supply		289,438		28
Portable CD Player Adapter For Car		206,924		12	*
Power Supply		730,231		259	*
Solid State Tesla Coil NEW!		140,058		4
Solid State Tesla Coil/High Voltage Generator		435,456		51
Transformerless Power Supply		456,800		117	*
Voltage Inverter		331,207		51	*
Voltage Inverter II		196,443		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		578,952		182
3 Watt FM Transmitter	Rae XL Tkacik	327,443		83	*
50 Watt Amplifier		500,452		74
8 Note Tune Player		136,497		12	*
8 Watt Audio Amp		365,434		67	*
Aircraft Radio Communications Receiver		270,560		49	*
Crystal Radio		154,322		53	*
Digital Volume Control		327,027		47	*
Electronic Stethoscope		308,048		142	*
FET Audio Mixer		337,118		41
FM Transmitter		993,580		420
Guitar Fuzz Effect		240,351		54	*
Microphone Mixer	Anatoly I. Shikhatov	244,946		26	*
Mono To Stereo Synthesizer	oRbEq	128,100		18	*
One Tube Regenerative Radio NEW!		131,343		4	*
Op Amp Radio		379,790		80	*
Single Chip AM Radio NEW!		95,283		2	*
Single Chip FM Radio NEW!		165,656		1	*
Sound Level Meter		335,607		51	*
Stereo Tube Amplifier	Weslee Kinsler	262,371		15	*
Tone Control		303,620		31
Transistor Organ		193,389		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		159,475		27	*
FM Telephone Bug		231,616		57
Phone Busy Indicator		209,784		24	*
Remote Telephone Ringer		114,475		3	*
Ringing Phone Light Flasher		210,994		35	*
Simple Phone Tap	Derek Tombrello	379,081		98	*
Telephone Hold Button		124,721		10
Telephone Recorder		212,042		54	*

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All material marked as mine is property of Aaron Cake. You may, however, distribute it as much as you want, with or without credit to me. Just don't claim credit for it yourself, and it would be nice if you included a link back to my page. All other material is property of its authors.