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, July 26, 2024	12VDC To 120VAC Inverter	31
	FM Transmitter	28
Yesterday Thursday, July 25, 2024	LASER Transmitter/Receiver	33
	12VDC To 120VAC Inverter	31
Of All Time	12VDC To 120VAC Inverter	1,535,312
	FM Transmitter	1,012,384

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		228,374		61	*
Car Alarm Arming Horn Beep Canceller	bob	137,862		6	*
Wireless Auto Tachometer		344,669		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	161,173		29	*
Parallel (Printer) Port Interface		288,323		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		449,518		63	*
3 Channel Spectrum Analyzer		223,695		20
40W Fluorescent Lamp Inverter	Bart Milnes	331,664		60	*
Adjustable Strobe Light		310,766		36
Black Light		282,947		29
Colour (Sound) Organ		292,489		36
Electronic Dice NEW!		190,779		10	*
Fantastic Atom Expander		204,399		25
Flash Slave Trigger		222,930		18	*
Infa-Red Remote Control		639,090		216	*
IR Remote Extender NEW!		134,276		3	*
IR Remote Jammer	Carl	268,038		110	*
IR Remote Switch NEW!		159,107		9	*
LASER Transmitter/Receiver		418,918		92
LED Chaser		448,017		83	*
LED Metronome NEW!		100,982		3	*
LED Thermometer		208,259		22	*
Light/Dark Detector		307,578		90	*
Simple Colour Organ		138,833		11	*
Strobe Light		277,257		27	*
TRIAC Light Dimmer		555,120		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		361,253		122	*
Electromagnetic Levitator NEW!		145,861		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		924,623		214	*
AC Motor Speed Controller		393,802		29	*
Air Flow Detector		253,447		54	*
Digital Keypad Combination Lock		203,736		20
Low Voltage Alarm		230,864		58	*
Pine Racecar Victory Judge		104,059		1	*
Pulse Width Modulation DC Motor Control		657,014		94
Rain Detector		306,393		112	*
Simple Lie Detector		566,682		323
Simple Polarity Tester	Dudley LeRoux	167,055		13	*
Simple Servo Controller		223,133		22	*
Simple Touch Switch NEW!		171,569		6	*
Simple Two Speed Contactor DC Motor Controller		206,849		21	*
Stepper Motor Controller		749,107		120	*
Time Delay Relay		557,578		88
Time Delay Relay II	jawaharlal@excite.com	248,967		39	*
Touch Switch		291,458		51	*
Video Activated Relay		123,376		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	183,193		10	*
Water Detector With Sump/Bilge Pump Controller		154,575		18	*
Wire Loop Alarm	Alex Meaden	207,200		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		318,478		25	*
12VDC To 120VAC Inverter		1,535,312		691
6V to 12V Converter		530,005		121
Automatic 12V Lead Acid Battery Charger		939,517		248
Automatic Load Sensing Power Switch		169,141		16	*
Car Battery Charger		885,422		159	*
Dual Polarity Power Supply		373,182		84	*
Fixed Voltage Power Supply		313,136		52	*
High Current Power Supply		341,425		66	*
High Voltage High Current Power Supply		265,853		35	*
LASER Power Supply		298,199		28
Portable CD Player Adapter For Car		213,969		12	*
Power Supply		741,587		259	*
Solid State Tesla Coil NEW!		148,392		4
Solid State Tesla Coil/High Voltage Generator		446,847		51
Transformerless Power Supply		465,281		117	*
Voltage Inverter		341,797		51	*
Voltage Inverter II		205,161		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		587,498		182
3 Watt FM Transmitter	Rae XL Tkacik	337,942		83	*
50 Watt Amplifier		510,185		74
8 Note Tune Player		142,268		12	*
8 Watt Audio Amp		375,654		67	*
Aircraft Radio Communications Receiver		281,019		49	*
Crystal Radio		160,762		53	*
Digital Volume Control		340,600		47	*
Electronic Stethoscope		323,438		142	*
FET Audio Mixer		345,554		41
FM Transmitter		1,012,384		420
Guitar Fuzz Effect		249,714		54	*
Microphone Mixer	Anatoly I. Shikhatov	252,546		26	*
Mono To Stereo Synthesizer	oRbEq	135,840		18	*
One Tube Regenerative Radio NEW!		145,134		4	*
Op Amp Radio		391,684		80	*
Single Chip AM Radio NEW!		101,613		3	*
Single Chip FM Radio NEW!		174,668		1	*
Sound Level Meter		343,974		51	*
Stereo Tube Amplifier	Weslee Kinsler	270,309		15	*
Tone Control		311,753		31
Transistor Organ		201,709		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		165,178		27	*
FM Telephone Bug		236,856		57
Phone Busy Indicator		215,568		24	*
Remote Telephone Ringer		119,814		3	*
Ringing Phone Light Flasher		220,432		35	*
Simple Phone Tap	Derek Tombrello	385,319		98	*
Telephone Hold Button		130,676		10
Telephone Recorder		218,208		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.