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 Saturday, September 25, 2021	12VDC To 120VAC Inverter	15
	Strobe Light	10
Yesterday Friday, September 24, 2021	FM Transmitter	40
	12VDC To 120VAC Inverter	37
Of All Time	12VDC To 120VAC Inverter	1,491,760
	FM Transmitter	982,484

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		218,363		61	*
Car Alarm Arming Horn Beep Canceller	bob	128,997		6	*
Wireless Auto Tachometer		332,693		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	152,730		29	*
Parallel (Printer) Port Interface		273,876		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		435,537		63	*
3 Channel Spectrum Analyzer		211,369		20
40W Fluorescent Lamp Inverter	Bart Milnes	320,820		60	*
Adjustable Strobe Light		297,662		36
Black Light		264,536		29
Colour (Sound) Organ		279,665		36
Electronic Dice NEW!		180,042		10	*
Fantastic Atom Expander		193,780		25
Flash Slave Trigger		211,055		18	*
Infa-Red Remote Control		622,472		216	*
IR Remote Extender NEW!		122,881		2	*
IR Remote Jammer	Carl	253,576		110	*
IR Remote Switch NEW!		149,923		9	*
LASER Transmitter/Receiver		400,710		92
LED Chaser		434,102		83	*
LED Metronome NEW!		92,974		3	*
LED Thermometer		198,956		22	*
Light/Dark Detector		297,818		90	*
Simple Colour Organ		130,492		10	*
Strobe Light		265,911		27	*
TRIAC Light Dimmer		539,885		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		349,466		122	*
Electromagnetic Levitator NEW!		136,129		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		908,412		214	*
AC Motor Speed Controller		375,547		29	*
Air Flow Detector		243,345		54	*
Digital Keypad Combination Lock		188,624		20
Low Voltage Alarm		218,920		58	*
Pine Racecar Victory Judge		96,208		1	*
Pulse Width Modulation DC Motor Control		637,703		94
Rain Detector		296,057		112	*
Simple Lie Detector		550,327		323
Simple Polarity Tester	Dudley LeRoux	156,903		13	*
Simple Servo Controller		212,073		22	*
Simple Touch Switch NEW!		161,218		5	*
Simple Two Speed Contactor DC Motor Controller		196,562		21	*
Stepper Motor Controller		729,810		120	*
Time Delay Relay		545,713		88
Time Delay Relay II	jawaharlal@excite.com	235,726		39	*
Touch Switch		280,634		51	*
Video Activated Relay		114,324		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	171,263		10	*
Water Detector With Sump/Bilge Pump Controller		144,614		18	*
Wire Loop Alarm	Alex Meaden	197,804		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		302,521		25	*
12VDC To 120VAC Inverter		1,491,760		689
6V to 12V Converter		512,658		121
Automatic 12V Lead Acid Battery Charger		919,788		248
Automatic Load Sensing Power Switch		157,892		16	*
Car Battery Charger		868,843		159	*
Dual Polarity Power Supply		360,688		84	*
Fixed Voltage Power Supply		300,865		52	*
High Current Power Supply		325,904		66	*
High Voltage High Current Power Supply		243,681		35	*
LASER Power Supply		284,886		28
Portable CD Player Adapter For Car		203,005		12	*
Power Supply		725,299		259	*
Solid State Tesla Coil NEW!		136,296		4
Solid State Tesla Coil/High Voltage Generator		429,417		50
Transformerless Power Supply		452,273		117	*
Voltage Inverter		325,388		51	*
Voltage Inverter II		192,572		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		574,486		182
3 Watt FM Transmitter	Rae XL Tkacik	322,794		83	*
50 Watt Amplifier		495,896		74
8 Note Tune Player		133,499		12	*
8 Watt Audio Amp		360,471		67	*
Aircraft Radio Communications Receiver		265,885		49	*
Crystal Radio		151,812		53	*
Digital Volume Control		322,628		47	*
Electronic Stethoscope		303,050		142	*
FET Audio Mixer		332,529		41
FM Transmitter		982,484		420
Guitar Fuzz Effect		235,648		54	*
Microphone Mixer	Anatoly I. Shikhatov	241,059		26	*
Mono To Stereo Synthesizer	oRbEq	124,098		18	*
One Tube Regenerative Radio NEW!		126,039		4	*
Op Amp Radio		374,400		80	*
Single Chip AM Radio NEW!		92,552		2	*
Single Chip FM Radio NEW!		161,781		1	*
Sound Level Meter		331,389		51	*
Stereo Tube Amplifier	Weslee Kinsler	258,467		15	*
Tone Control		298,277		31
Transistor Organ		189,229		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		156,207		27	*
FM Telephone Bug		228,345		57
Phone Busy Indicator		206,280		24	*
Remote Telephone Ringer		111,453		3	*
Ringing Phone Light Flasher		206,226		35	*
Simple Phone Tap	Derek Tombrello	375,655		98	*
Telephone Hold Button		121,377		10
Telephone Recorder		208,607		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.