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, January 22, 2022	12VDC To 120VAC Inverter	30
	Wireless Auto Tachometer	29
Yesterday Friday, January 21, 2022	6V to 12V Converter	38
	Flash Slave Trigger	35
Of All Time	12VDC To 120VAC Inverter	1,496,464
	FM Transmitter	988,266

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		219,741		61	*
Car Alarm Arming Horn Beep Canceller	bob	130,176		6	*
Wireless Auto Tachometer		334,427		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	153,848		29	*
Parallel (Printer) Port Interface		275,648		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		437,542		63	*
3 Channel Spectrum Analyzer		212,831		20
40W Fluorescent Lamp Inverter	Bart Milnes	322,331		60	*
Adjustable Strobe Light		299,490		36
Black Light		266,913		29
Colour (Sound) Organ		281,391		36
Electronic Dice NEW!		181,411		10	*
Fantastic Atom Expander		195,895		25
Flash Slave Trigger		212,605		18	*
Infa-Red Remote Control		624,304		216	*
IR Remote Extender NEW!		124,494		2	*
IR Remote Jammer	Carl	255,402		110	*
IR Remote Switch NEW!		151,138		9	*
LASER Transmitter/Receiver		402,877		92
LED Chaser		435,794		83	*
LED Metronome NEW!		93,840		3	*
LED Thermometer		200,177		22	*
Light/Dark Detector		299,346		90	*
Simple Colour Organ		131,590		10	*
Strobe Light		267,414		27	*
TRIAC Light Dimmer		541,487		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		351,062		122	*
Electromagnetic Levitator NEW!		137,401		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		910,812		214	*
AC Motor Speed Controller		377,746		29	*
Air Flow Detector		244,609		54	*
Digital Keypad Combination Lock		189,934		20
Low Voltage Alarm		220,990		58	*
Pine Racecar Victory Judge		97,255		1	*
Pulse Width Modulation DC Motor Control		639,436		94
Rain Detector		297,482		112	*
Simple Lie Detector		551,990		323
Simple Polarity Tester	Dudley LeRoux	158,319		13	*
Simple Servo Controller		213,926		22	*
Simple Touch Switch NEW!		162,493		5	*
Simple Two Speed Contactor DC Motor Controller		197,871		21	*
Stepper Motor Controller		732,747		120	*
Time Delay Relay		547,276		88
Time Delay Relay II	jawaharlal@excite.com	237,389		39	*
Touch Switch		282,016		51	*
Video Activated Relay		115,480		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	172,712		10	*
Water Detector With Sump/Bilge Pump Controller		145,958		18	*
Wire Loop Alarm	Alex Meaden	199,118		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		304,275		25	*
12VDC To 120VAC Inverter		1,496,464		689
6V to 12V Converter		515,063		121
Automatic 12V Lead Acid Battery Charger		922,724		248
Automatic Load Sensing Power Switch		159,772		16	*
Car Battery Charger		870,980		159	*
Dual Polarity Power Supply		362,179		84	*
Fixed Voltage Power Supply		302,486		52	*
High Current Power Supply		327,632		66	*
High Voltage High Current Power Supply		245,014		35	*
LASER Power Supply		286,560		28
Portable CD Player Adapter For Car		204,454		12	*
Power Supply		727,138		259	*
Solid State Tesla Coil NEW!		137,657		4
Solid State Tesla Coil/High Voltage Generator		431,528		50
Transformerless Power Supply		453,994		117	*
Voltage Inverter		328,138		51	*
Voltage Inverter II		193,920		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		576,296		182
3 Watt FM Transmitter	Rae XL Tkacik	324,606		83	*
50 Watt Amplifier		497,666		74
8 Note Tune Player		134,608		12	*
8 Watt Audio Amp		362,398		67	*
Aircraft Radio Communications Receiver		267,531		49	*
Crystal Radio		152,760		53	*
Digital Volume Control		324,221		47	*
Electronic Stethoscope		304,785		142	*
FET Audio Mixer		334,369		41
FM Transmitter		988,266		420
Guitar Fuzz Effect		237,419		54	*
Microphone Mixer	Anatoly I. Shikhatov	242,480		26	*
Mono To Stereo Synthesizer	oRbEq	125,539		18	*
One Tube Regenerative Radio NEW!		127,967		4	*
Op Amp Radio		376,432		80	*
Single Chip AM Radio NEW!		93,551		2	*
Single Chip FM Radio NEW!		163,313		1	*
Sound Level Meter		332,956		51	*
Stereo Tube Amplifier	Weslee Kinsler	259,943		15	*
Tone Control		300,731		31
Transistor Organ		190,812		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		157,451		27	*
FM Telephone Bug		229,550		57
Phone Busy Indicator		207,587		24	*
Remote Telephone Ringer		112,574		3	*
Ringing Phone Light Flasher		208,138		35	*
Simple Phone Tap	Derek Tombrello	376,953		98	*
Telephone Hold Button		122,532		10
Telephone Recorder		209,945		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.