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, January 28, 2022	FM Transmitter	10
	Rain Detector	9
Yesterday Thursday, January 27, 2022	FM Transmitter	41
	12VDC To 120VAC Inverter	40
Of All Time	12VDC To 120VAC Inverter	1,496,703
	FM Transmitter	988,449

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		219,821		61	*
Car Alarm Arming Horn Beep Canceller	bob	130,245		6	*
Wireless Auto Tachometer		334,518		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	153,892		29	*
Parallel (Printer) Port Interface		275,759		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		437,646		63	*
3 Channel Spectrum Analyzer		212,913		20
40W Fluorescent Lamp Inverter	Bart Milnes	322,412		60	*
Adjustable Strobe Light		299,581		36
Black Light		267,036		29
Colour (Sound) Organ		281,482		36
Electronic Dice NEW!		181,481		10	*
Fantastic Atom Expander		195,987		25
Flash Slave Trigger		212,689		18	*
Infa-Red Remote Control		624,371		216	*
IR Remote Extender NEW!		124,580		2	*
IR Remote Jammer	Carl	255,459		110	*
IR Remote Switch NEW!		151,191		9	*
LASER Transmitter/Receiver		403,012		92
LED Chaser		435,929		83	*
LED Metronome NEW!		93,874		3	*
LED Thermometer		200,231		22	*
Light/Dark Detector		299,423		90	*
Simple Colour Organ		131,651		10	*
Strobe Light		267,469		27	*
TRIAC Light Dimmer		541,559		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		351,144		122	*
Electromagnetic Levitator NEW!		137,467		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		910,932		214	*
AC Motor Speed Controller		377,867		29	*
Air Flow Detector		244,689		54	*
Digital Keypad Combination Lock		189,997		20
Low Voltage Alarm		221,085		58	*
Pine Racecar Victory Judge		97,314		1	*
Pulse Width Modulation DC Motor Control		639,544		94
Rain Detector		297,570		112	*
Simple Lie Detector		552,066		323
Simple Polarity Tester	Dudley LeRoux	158,390		13	*
Simple Servo Controller		214,023		22	*
Simple Touch Switch NEW!		162,605		5	*
Simple Two Speed Contactor DC Motor Controller		197,957		21	*
Stepper Motor Controller		732,880		120	*
Time Delay Relay		547,362		88
Time Delay Relay II	jawaharlal@excite.com	237,480		39	*
Touch Switch		282,105		51	*
Video Activated Relay		115,543		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	172,782		10	*
Water Detector With Sump/Bilge Pump Controller		146,025		18	*
Wire Loop Alarm	Alex Meaden	199,191		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		304,384		25	*
12VDC To 120VAC Inverter		1,496,703		689
6V to 12V Converter		515,194		121
Automatic 12V Lead Acid Battery Charger		922,883		248
Automatic Load Sensing Power Switch		159,858		16	*
Car Battery Charger		871,099		159	*
Dual Polarity Power Supply		362,237		84	*
Fixed Voltage Power Supply		302,571		52	*
High Current Power Supply		327,713		66	*
High Voltage High Current Power Supply		245,087		35	*
LASER Power Supply		286,639		28
Portable CD Player Adapter For Car		204,523		12	*
Power Supply		727,220		259	*
Solid State Tesla Coil NEW!		137,724		4
Solid State Tesla Coil/High Voltage Generator		431,635		50
Transformerless Power Supply		454,094		117	*
Voltage Inverter		328,265		51	*
Voltage Inverter II		194,000		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		576,377		182
3 Watt FM Transmitter	Rae XL Tkacik	324,709		83	*
50 Watt Amplifier		497,755		74
8 Note Tune Player		134,671		12	*
8 Watt Audio Amp		362,481		67	*
Aircraft Radio Communications Receiver		267,617		49	*
Crystal Radio		152,792		53	*
Digital Volume Control		324,302		47	*
Electronic Stethoscope		304,870		142	*
FET Audio Mixer		334,478		41
FM Transmitter		988,449		420
Guitar Fuzz Effect		237,528		54	*
Microphone Mixer	Anatoly I. Shikhatov	242,548		26	*
Mono To Stereo Synthesizer	oRbEq	125,612		18	*
One Tube Regenerative Radio NEW!		128,059		4	*
Op Amp Radio		376,535		80	*
Single Chip AM Radio NEW!		93,610		2	*
Single Chip FM Radio NEW!		163,392		1	*
Sound Level Meter		333,047		51	*
Stereo Tube Amplifier	Weslee Kinsler	260,029		15	*
Tone Control		300,846		31
Transistor Organ		190,883		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		157,525		27	*
FM Telephone Bug		229,614		57
Phone Busy Indicator		207,645		24	*
Remote Telephone Ringer		112,638		3	*
Ringing Phone Light Flasher		208,223		35	*
Simple Phone Tap	Derek Tombrello	377,012		98	*
Telephone Hold Button		122,593		10
Telephone Recorder		209,998		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.