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 Wednesday, June 29, 2022	12VDC To 120VAC Inverter	25
	Automatic 12V Lead Acid Battery Charger	19
Yesterday Tuesday, June 28, 2022	12VDC To 120VAC Inverter	35
	12V To 24V DC-DC Converter	34
Of All Time	12VDC To 120VAC Inverter	1,502,592
	FM Transmitter	992,577

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		221,666		61	*
Car Alarm Arming Horn Beep Canceller	bob	131,793		6	*
Wireless Auto Tachometer		336,717		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	155,344		29	*
Parallel (Printer) Port Interface		278,262		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		440,212		63	*
3 Channel Spectrum Analyzer		215,065		20
40W Fluorescent Lamp Inverter	Bart Milnes	324,304		60	*
Adjustable Strobe Light		301,958		36
Black Light		270,248		29
Colour (Sound) Organ		283,592		36
Electronic Dice NEW!		183,309		10	*
Fantastic Atom Expander		197,990		25
Flash Slave Trigger		214,772		18	*
Infa-Red Remote Control		626,906		216	*
IR Remote Extender NEW!		126,476		2	*
IR Remote Jammer	Carl	258,745		110	*
IR Remote Switch NEW!		152,770		9	*
LASER Transmitter/Receiver		406,051		92
LED Chaser		438,188		83	*
LED Metronome NEW!		95,024		3	*
LED Thermometer		201,782		22	*
Light/Dark Detector		301,144		90	*
Simple Colour Organ		133,109		10	*
Strobe Light		269,496		27	*
TRIAC Light Dimmer		543,612		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		353,155		122	*
Electromagnetic Levitator NEW!		139,090		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		913,764		214	*
AC Motor Speed Controller		380,765		29	*
Air Flow Detector		246,452		54	*
Digital Keypad Combination Lock		191,757		20
Low Voltage Alarm		223,929		58	*
Pine Racecar Victory Judge		98,709		1	*
Pulse Width Modulation DC Motor Control		641,658		94
Rain Detector		299,344		112	*
Simple Lie Detector		554,071		323
Simple Polarity Tester	Dudley LeRoux	160,111		13	*
Simple Servo Controller		215,796		22	*
Simple Touch Switch NEW!		164,374		5	*
Simple Two Speed Contactor DC Motor Controller		199,646		21	*
Stepper Motor Controller		735,864		120	*
Time Delay Relay		549,171		88
Time Delay Relay II	jawaharlal@excite.com	239,823		39	*
Touch Switch		284,130		51	*
Video Activated Relay		117,056		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	174,554		10	*
Water Detector With Sump/Bilge Pump Controller		147,771		18	*
Wire Loop Alarm	Alex Meaden	200,841		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		306,545		25	*
12VDC To 120VAC Inverter		1,502,592		690
6V to 12V Converter		518,293		121
Automatic 12V Lead Acid Battery Charger		926,979		248
Automatic Load Sensing Power Switch		161,579		16	*
Car Battery Charger		873,815		159	*
Dual Polarity Power Supply		364,410		84	*
Fixed Voltage Power Supply		304,636		52	*
High Current Power Supply		330,087		66	*
High Voltage High Current Power Supply		246,984		35	*
LASER Power Supply		288,833		28
Portable CD Player Adapter For Car		206,466		12	*
Power Supply		729,694		259	*
Solid State Tesla Coil NEW!		139,568		4
Solid State Tesla Coil/High Voltage Generator		434,710		51
Transformerless Power Supply		456,374		117	*
Voltage Inverter		330,711		51	*
Voltage Inverter II		196,033		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		578,468		182
3 Watt FM Transmitter	Rae XL Tkacik	326,979		83	*
50 Watt Amplifier		499,936		74
8 Note Tune Player		136,173		12	*
8 Watt Audio Amp		364,886		67	*
Aircraft Radio Communications Receiver		269,935		49	*
Crystal Radio		154,046		53	*
Digital Volume Control		326,526		47	*
Electronic Stethoscope		307,503		142	*
FET Audio Mixer		336,614		41
FM Transmitter		992,577		420
Guitar Fuzz Effect		239,794		54	*
Microphone Mixer	Anatoly I. Shikhatov	244,465		26	*
Mono To Stereo Synthesizer	oRbEq	127,640		18	*
One Tube Regenerative Radio NEW!		130,648		4	*
Op Amp Radio		379,146		80	*
Single Chip AM Radio NEW!		94,966		2	*
Single Chip FM Radio NEW!		165,228		1	*
Sound Level Meter		335,094		51	*
Stereo Tube Amplifier	Weslee Kinsler	261,901		15	*
Tone Control		303,138		31
Transistor Organ		192,918		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		159,130		27	*
FM Telephone Bug		231,269		57
Phone Busy Indicator		209,371		24	*
Remote Telephone Ringer		114,163		3	*
Ringing Phone Light Flasher		210,478		35	*
Simple Phone Tap	Derek Tombrello	378,739		98	*
Telephone Hold Button		124,298		10
Telephone Recorder		211,689		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.