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, May 15, 2021	IR Remote Switch	6
	One Tube Regenerative Radio	5
Yesterday Friday, May 14, 2021	12VDC To 120VAC Inverter	59
	FM Transmitter	42
Of All Time	12VDC To 120VAC Inverter	1,486,222
	FM Transmitter	978,941

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		216,527		61	*
Car Alarm Arming Horn Beep Canceller	bob	127,447		6	*
Wireless Auto Tachometer		330,481		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	151,296		29	*
Parallel (Printer) Port Interface		271,427		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		432,795		63	*
3 Channel Spectrum Analyzer		209,438		20
40W Fluorescent Lamp Inverter	Bart Milnes	318,967		60	*
Adjustable Strobe Light		295,594		36
Black Light		261,582		29
Colour (Sound) Organ		277,694		36
Electronic Dice NEW!		178,209		10	*
Fantastic Atom Expander		191,875		25
Flash Slave Trigger		208,945		18	*
Infa-Red Remote Control		620,239		216	*
IR Remote Extender NEW!		120,965		2	*
IR Remote Jammer	Carl	250,844		110	*
IR Remote Switch NEW!		148,304		9	*
LASER Transmitter/Receiver		397,886		92
LED Chaser		432,231		83	*
LED Metronome NEW!		91,992		3	*
LED Thermometer		197,513		22	*
Light/Dark Detector		296,217		90	*
Simple Colour Organ		129,226		10	*
Strobe Light		264,110		27	*
TRIAC Light Dimmer		538,189		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		347,551		122	*
Electromagnetic Levitator NEW!		134,484		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		905,665		214	*
AC Motor Speed Controller		373,046		29	*
Air Flow Detector		241,792		54	*
Digital Keypad Combination Lock		187,094		20
Low Voltage Alarm		217,178		58	*
Pine Racecar Victory Judge		94,954		1	*
Pulse Width Modulation DC Motor Control		635,682		94
Rain Detector		294,476		112	*
Simple Lie Detector		548,192		323
Simple Polarity Tester	Dudley LeRoux	155,142		13	*
Simple Servo Controller		210,337		22	*
Simple Touch Switch NEW!		159,675		5	*
Simple Two Speed Contactor DC Motor Controller		194,922		21	*
Stepper Motor Controller		727,352		120	*
Time Delay Relay		543,822		88
Time Delay Relay II	jawaharlal@excite.com	233,639		39	*
Touch Switch		279,037		51	*
Video Activated Relay		112,993		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	169,503		10	*
Water Detector With Sump/Bilge Pump Controller		142,642		18	*
Wire Loop Alarm	Alex Meaden	196,394		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		300,574		25	*
12VDC To 120VAC Inverter		1,486,222		689
6V to 12V Converter		509,858		121
Automatic 12V Lead Acid Battery Charger		916,984		248
Automatic Load Sensing Power Switch		156,081		16	*
Car Battery Charger		866,694		159	*
Dual Polarity Power Supply		358,967		84	*
Fixed Voltage Power Supply		299,021		52	*
High Current Power Supply		323,806		66	*
High Voltage High Current Power Supply		242,074		35	*
LASER Power Supply		282,767		28
Portable CD Player Adapter For Car		201,058		12	*
Power Supply		722,596		259	*
Solid State Tesla Coil NEW!		134,787		4
Solid State Tesla Coil/High Voltage Generator		426,479		50
Transformerless Power Supply		450,303		117	*
Voltage Inverter		323,031		51	*
Voltage Inverter II		191,037		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		572,514		182
3 Watt FM Transmitter	Rae XL Tkacik	320,696		83	*
50 Watt Amplifier		493,947		74
8 Note Tune Player		132,184		12	*
8 Watt Audio Amp		358,392		67	*
Aircraft Radio Communications Receiver		263,898		49	*
Crystal Radio		150,809		53	*
Digital Volume Control		320,757		47	*
Electronic Stethoscope		300,867		142	*
FET Audio Mixer		330,436		41
FM Transmitter		978,941		420
Guitar Fuzz Effect		233,449		54	*
Microphone Mixer	Anatoly I. Shikhatov	239,298		26	*
Mono To Stereo Synthesizer	oRbEq	122,239		18	*
One Tube Regenerative Radio NEW!		124,302		4	*
Op Amp Radio		372,118		80	*
Single Chip AM Radio NEW!		91,413		2	*
Single Chip FM Radio NEW!		159,936		1	*
Sound Level Meter		329,644		51	*
Stereo Tube Amplifier	Weslee Kinsler	256,791		15	*
Tone Control		296,184		31
Transistor Organ		187,435		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		154,739		27	*
FM Telephone Bug		226,925		57
Phone Busy Indicator		204,801		24	*
Remote Telephone Ringer		110,034		3	*
Ringing Phone Light Flasher		204,276		35	*
Simple Phone Tap	Derek Tombrello	374,073		98	*
Telephone Hold Button		119,859		10
Telephone Recorder		206,969		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.