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, April 27, 2024	Time Delay Relay II	9
	Tone Control	9
Yesterday Friday, April 26, 2024	12VDC To 120VAC Inverter	36
	Stepper Motor Controller	31
Of All Time	12VDC To 120VAC Inverter	1,531,722
	FM Transmitter	1,009,423

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		227,652		61	*
Car Alarm Arming Horn Beep Canceller	bob	137,226		6	*
Wireless Auto Tachometer		343,777		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	160,526		29	*
Parallel (Printer) Port Interface		286,623		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		448,434		63	*
3 Channel Spectrum Analyzer		222,529		20
40W Fluorescent Lamp Inverter	Bart Milnes	330,904		60	*
Adjustable Strobe Light		309,793		36
Black Light		281,515		29
Colour (Sound) Organ		291,466		36
Electronic Dice NEW!		189,960		10	*
Fantastic Atom Expander		203,701		25
Flash Slave Trigger		221,963		18	*
Infa-Red Remote Control		638,016		216	*
IR Remote Extender NEW!		133,463		3	*
IR Remote Jammer	Carl	266,951		110	*
IR Remote Switch NEW!		158,399		9	*
LASER Transmitter/Receiver		417,325		92
LED Chaser		446,813		83	*
LED Metronome NEW!		100,181		3	*
LED Thermometer		207,503		22	*
Light/Dark Detector		306,900		90	*
Simple Colour Organ		138,234		11	*
Strobe Light		276,615		27	*
TRIAC Light Dimmer		553,667		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		360,167		122	*
Electromagnetic Levitator NEW!		145,159		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		923,147		214	*
AC Motor Speed Controller		392,295		29	*
Air Flow Detector		252,564		54	*
Digital Keypad Combination Lock		203,068		20
Low Voltage Alarm		230,037		58	*
Pine Racecar Victory Judge		103,438		1	*
Pulse Width Modulation DC Motor Control		655,787		94
Rain Detector		305,488		112	*
Simple Lie Detector		565,477		323
Simple Polarity Tester	Dudley LeRoux	166,217		13	*
Simple Servo Controller		222,269		22	*
Simple Touch Switch NEW!		170,693		6	*
Simple Two Speed Contactor DC Motor Controller		206,031		21	*
Stepper Motor Controller		746,969		120	*
Time Delay Relay		556,477		88
Time Delay Relay II	jawaharlal@excite.com	247,877		39	*
Touch Switch		290,562		51	*
Video Activated Relay		122,568		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	182,115		10	*
Water Detector With Sump/Bilge Pump Controller		153,606		18	*
Wire Loop Alarm	Alex Meaden	206,507		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		316,970		25	*
12VDC To 120VAC Inverter		1,531,722		691
6V to 12V Converter		528,472		121
Automatic 12V Lead Acid Battery Charger		938,179		248
Automatic Load Sensing Power Switch		168,216		16	*
Car Battery Charger		884,134		159	*
Dual Polarity Power Supply		372,105		84	*
Fixed Voltage Power Supply		312,097		52	*
High Current Power Supply		339,950		66	*
High Voltage High Current Power Supply		264,882		35	*
LASER Power Supply		297,078		28
Portable CD Player Adapter For Car		213,236		12	*
Power Supply		739,472		259	*
Solid State Tesla Coil NEW!		147,289		4
Solid State Tesla Coil/High Voltage Generator		445,383		51
Transformerless Power Supply		464,019		117	*
Voltage Inverter		340,019		51	*
Voltage Inverter II		204,026		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		586,336		182
3 Watt FM Transmitter	Rae XL Tkacik	336,286		83	*
50 Watt Amplifier		508,759		74
8 Note Tune Player		141,506		12	*
8 Watt Audio Amp		373,921		67	*
Aircraft Radio Communications Receiver		279,490		49	*
Crystal Radio		159,782		53	*
Digital Volume Control		339,419		47	*
Electronic Stethoscope		322,173		142	*
FET Audio Mixer		344,510		41
FM Transmitter		1,009,423		420
Guitar Fuzz Effect		248,560		54	*
Microphone Mixer	Anatoly I. Shikhatov	251,509		26	*
Mono To Stereo Synthesizer	oRbEq	134,706		18	*
One Tube Regenerative Radio NEW!		143,356		4	*
Op Amp Radio		389,909		80	*
Single Chip AM Radio NEW!		100,670		3	*
Single Chip FM Radio NEW!		173,583		1	*
Sound Level Meter		342,921		51	*
Stereo Tube Amplifier	Weslee Kinsler	269,247		15	*
Tone Control		310,688		31
Transistor Organ		200,620		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		164,439		27	*
FM Telephone Bug		236,246		57
Phone Busy Indicator		214,807		24	*
Remote Telephone Ringer		119,128		3	*
Ringing Phone Light Flasher		219,327		35	*
Simple Phone Tap	Derek Tombrello	384,488		98	*
Telephone Hold Button		129,945		10
Telephone Recorder		217,487		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.