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 Thursday, May 16, 2024	12VDC To 120VAC Inverter	39
	Voltage Inverter	36
Yesterday Wednesday, May 15, 2024	7 Segment LED Counter	38
	12VDC To 120VAC Inverter	35
Of All Time	12VDC To 120VAC Inverter	1,532,423
	FM Transmitter	1,009,870

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		227,794		61	*
Car Alarm Arming Horn Beep Canceller	bob	137,347		6	*
Wireless Auto Tachometer		343,950		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	160,656		29	*
Parallel (Printer) Port Interface		286,825		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		448,625		63	*
3 Channel Spectrum Analyzer		222,711		20
40W Fluorescent Lamp Inverter	Bart Milnes	331,056		60	*
Adjustable Strobe Light		309,960		36
Black Light		281,797		29
Colour (Sound) Organ		291,654		36
Electronic Dice NEW!		190,140		10	*
Fantastic Atom Expander		203,836		25
Flash Slave Trigger		222,123		18	*
Infa-Red Remote Control		638,222		216	*
IR Remote Extender NEW!		133,627		3	*
IR Remote Jammer	Carl	267,207		110	*
IR Remote Switch NEW!		158,558		9	*
LASER Transmitter/Receiver		417,665		92
LED Chaser		447,046		83	*
LED Metronome NEW!		100,374		3	*
LED Thermometer		207,636		22	*
Light/Dark Detector		307,034		90	*
Simple Colour Organ		138,331		11	*
Strobe Light		276,740		27	*
TRIAC Light Dimmer		553,934		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		360,352		122	*
Electromagnetic Levitator NEW!		145,289		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		923,466		214	*
AC Motor Speed Controller		392,600		29	*
Air Flow Detector		252,723		54	*
Digital Keypad Combination Lock		203,211		20
Low Voltage Alarm		230,201		58	*
Pine Racecar Victory Judge		103,579		1	*
Pulse Width Modulation DC Motor Control		656,060		94
Rain Detector		305,706		112	*
Simple Lie Detector		565,676		323
Simple Polarity Tester	Dudley LeRoux	166,364		13	*
Simple Servo Controller		222,411		22	*
Simple Touch Switch NEW!		170,867		6	*
Simple Two Speed Contactor DC Motor Controller		206,189		21	*
Stepper Motor Controller		747,359		120	*
Time Delay Relay		556,702		88
Time Delay Relay II	jawaharlal@excite.com	248,094		39	*
Touch Switch		290,754		51	*
Video Activated Relay		122,731		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	182,308		10	*
Water Detector With Sump/Bilge Pump Controller		153,766		18	*
Wire Loop Alarm	Alex Meaden	206,634		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		317,278		25	*
12VDC To 120VAC Inverter		1,532,423		691
6V to 12V Converter		528,752		121
Automatic 12V Lead Acid Battery Charger		938,432		248
Automatic Load Sensing Power Switch		168,422		16	*
Car Battery Charger		884,358		159	*
Dual Polarity Power Supply		372,306		84	*
Fixed Voltage Power Supply		312,290		52	*
High Current Power Supply		340,230		66	*
High Voltage High Current Power Supply		265,092		35	*
LASER Power Supply		297,292		28
Portable CD Player Adapter For Car		213,377		12	*
Power Supply		740,205		259	*
Solid State Tesla Coil NEW!		147,502		4
Solid State Tesla Coil/High Voltage Generator		445,659		51
Transformerless Power Supply		464,266		117	*
Voltage Inverter		340,368		51	*
Voltage Inverter II		204,249		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		586,551		182
3 Watt FM Transmitter	Rae XL Tkacik	336,573		83	*
50 Watt Amplifier		509,036		74
8 Note Tune Player		141,637		12	*
8 Watt Audio Amp		374,308		67	*
Aircraft Radio Communications Receiver		279,746		49	*
Crystal Radio		159,993		53	*
Digital Volume Control		339,615		47	*
Electronic Stethoscope		322,391		142	*
FET Audio Mixer		344,708		41
FM Transmitter		1,009,870		420
Guitar Fuzz Effect		248,788		54	*
Microphone Mixer	Anatoly I. Shikhatov	251,679		26	*
Mono To Stereo Synthesizer	oRbEq	134,890		18	*
One Tube Regenerative Radio NEW!		143,725		4	*
Op Amp Radio		390,242		80	*
Single Chip AM Radio NEW!		100,841		3	*
Single Chip FM Radio NEW!		173,774		1	*
Sound Level Meter		343,134		51	*
Stereo Tube Amplifier	Weslee Kinsler	269,451		15	*
Tone Control		310,881		31
Transistor Organ		200,818		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		164,561		27	*
FM Telephone Bug		236,358		57
Phone Busy Indicator		214,958		24	*
Remote Telephone Ringer		119,253		3	*
Ringing Phone Light Flasher		219,536		35	*
Simple Phone Tap	Derek Tombrello	384,626		98	*
Telephone Hold Button		130,096		10
Telephone Recorder		217,623		55	*

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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.