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, September 23, 2023	12VDC To 120VAC Inverter	14
	7 Segment LED Counter	10
Yesterday Friday, September 22, 2023	FM Transmitter	32
	12VDC To 120VAC Inverter	28
Of All Time	12VDC To 120VAC Inverter	1,522,401
	FM Transmitter	1,004,012

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		225,924		61	*
Car Alarm Arming Horn Beep Canceller	bob	135,755		6	*
Wireless Auto Tachometer		341,816		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	159,126		29	*
Parallel (Printer) Port Interface		284,167		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		446,063		63	*
3 Channel Spectrum Analyzer		220,195		20
40W Fluorescent Lamp Inverter	Bart Milnes	328,989		60	*
Adjustable Strobe Light		307,597		36
Black Light		278,197		29
Colour (Sound) Organ		289,025		36
Electronic Dice NEW!		187,956		10	*
Fantastic Atom Expander		202,046		25
Flash Slave Trigger		220,232		18	*
Infa-Red Remote Control		635,624		216	*
IR Remote Extender NEW!		131,436		2	*
IR Remote Jammer	Carl	264,360		110	*
IR Remote Switch NEW!		156,678		9	*
LASER Transmitter/Receiver		413,707		92
LED Chaser		444,222		83	*
LED Metronome NEW!		98,498		3	*
LED Thermometer		205,707		22	*
Light/Dark Detector		305,137		90	*
Simple Colour Organ		136,768		11	*
Strobe Light		274,237		27	*
TRIAC Light Dimmer		550,172		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		358,121		122	*
Electromagnetic Levitator NEW!		143,396		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		920,274		214	*
AC Motor Speed Controller		388,552		29	*
Air Flow Detector		250,745		54	*
Digital Keypad Combination Lock		201,394		20
Low Voltage Alarm		228,159		58	*
Pine Racecar Victory Judge		102,068		1	*
Pulse Width Modulation DC Motor Control		653,197		94
Rain Detector		303,566		112	*
Simple Lie Detector		562,473		323
Simple Polarity Tester	Dudley LeRoux	164,459		13	*
Simple Servo Controller		220,250		22	*
Simple Touch Switch NEW!		168,686		6	*
Simple Two Speed Contactor DC Motor Controller		203,937		21	*
Stepper Motor Controller		743,201		120	*
Time Delay Relay		554,092		88
Time Delay Relay II	jawaharlal@excite.com	245,483		39	*
Touch Switch		288,506		51	*
Video Activated Relay		120,961		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	179,530		10	*
Water Detector With Sump/Bilge Pump Controller		151,854		18	*
Wire Loop Alarm	Alex Meaden	204,871		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		313,290		25	*
12VDC To 120VAC Inverter		1,522,401		691
6V to 12V Converter		525,121		121
Automatic 12V Lead Acid Battery Charger		934,776		248
Automatic Load Sensing Power Switch		166,200		16	*
Car Battery Charger		881,206		159	*
Dual Polarity Power Supply		369,615		84	*
Fixed Voltage Power Supply		309,918		52	*
High Current Power Supply		336,311		66	*
High Voltage High Current Power Supply		251,565		35	*
LASER Power Supply		294,538		28
Portable CD Player Adapter For Car		211,337		12	*
Power Supply		736,629		259	*
Solid State Tesla Coil NEW!		144,627		4
Solid State Tesla Coil/High Voltage Generator		442,028		51
Transformerless Power Supply		461,594		117	*
Voltage Inverter		336,355		51	*
Voltage Inverter II		201,153		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		583,768		182
3 Watt FM Transmitter	Rae XL Tkacik	333,358		83	*
50 Watt Amplifier		505,919		74
8 Note Tune Player		139,863		12	*
8 Watt Audio Amp		370,691		67	*
Aircraft Radio Communications Receiver		276,448		49	*
Crystal Radio		157,670		53	*
Digital Volume Control		336,943		47	*
Electronic Stethoscope		319,316		142	*
FET Audio Mixer		342,032		41
FM Transmitter		1,004,012		420
Guitar Fuzz Effect		245,519		54	*
Microphone Mixer	Anatoly I. Shikhatov	249,239		26	*
Mono To Stereo Synthesizer	oRbEq	132,328		18	*
One Tube Regenerative Radio NEW!		138,132		4	*
Op Amp Radio		386,048		80	*
Single Chip AM Radio NEW!		98,681		3	*
Single Chip FM Radio NEW!		170,889		1	*
Sound Level Meter		340,481		51	*
Stereo Tube Amplifier	Weslee Kinsler	266,964		15	*
Tone Control		308,583		31
Transistor Organ		198,107		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		162,890		27	*
FM Telephone Bug		234,835		57
Phone Busy Indicator		213,292		24	*
Remote Telephone Ringer		117,690		3	*
Ringing Phone Light Flasher		216,378		35	*
Simple Phone Tap	Derek Tombrello	382,697		98	*
Telephone Hold Button		128,364		10
Telephone Recorder		215,712		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.