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, April 19, 2024	8 Watt Audio Amp	31
	12VDC To 120VAC Inverter	30
Yesterday Thursday, April 18, 2024	12VDC To 120VAC Inverter	51
	Stepper Motor Controller	31
Of All Time	12VDC To 120VAC Inverter	1,531,417
	FM Transmitter	1,009,212

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		227,579		61	*
Car Alarm Arming Horn Beep Canceller	bob	137,168		6	*
Wireless Auto Tachometer		343,707		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	160,466		29	*
Parallel (Printer) Port Interface		286,500		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		448,348		63	*
3 Channel Spectrum Analyzer		222,429		20
40W Fluorescent Lamp Inverter	Bart Milnes	330,819		60	*
Adjustable Strobe Light		309,694		36
Black Light		281,383		29
Colour (Sound) Organ		291,366		36
Electronic Dice NEW!		189,853		10	*
Fantastic Atom Expander		203,615		25
Flash Slave Trigger		221,885		18	*
Infa-Red Remote Control		637,874		216	*
IR Remote Extender NEW!		133,382		3	*
IR Remote Jammer	Carl	266,849		110	*
IR Remote Switch NEW!		158,325		9	*
LASER Transmitter/Receiver		417,201		92
LED Chaser		446,712		83	*
LED Metronome NEW!		100,095		3	*
LED Thermometer		207,421		22	*
Light/Dark Detector		306,820		90	*
Simple Colour Organ		138,163		11	*
Strobe Light		276,532		27	*
TRIAC Light Dimmer		553,531		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		360,068		122	*
Electromagnetic Levitator NEW!		145,092		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		923,023		214	*
AC Motor Speed Controller		392,149		29	*
Air Flow Detector		252,484		54	*
Digital Keypad Combination Lock		203,002		20
Low Voltage Alarm		229,948		58	*
Pine Racecar Victory Judge		103,357		1	*
Pulse Width Modulation DC Motor Control		655,644		94
Rain Detector		305,411		112	*
Simple Lie Detector		565,371		323
Simple Polarity Tester	Dudley LeRoux	166,137		13	*
Simple Servo Controller		222,167		22	*
Simple Touch Switch NEW!		170,607		6	*
Simple Two Speed Contactor DC Motor Controller		205,944		21	*
Stepper Motor Controller		746,767		120	*
Time Delay Relay		556,376		88
Time Delay Relay II	jawaharlal@excite.com	247,770		39	*
Touch Switch		290,478		51	*
Video Activated Relay		122,488		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	182,025		10	*
Water Detector With Sump/Bilge Pump Controller		153,524		18	*
Wire Loop Alarm	Alex Meaden	206,438		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		316,827		25	*
12VDC To 120VAC Inverter		1,531,417		691
6V to 12V Converter		528,315		121
Automatic 12V Lead Acid Battery Charger		938,034		248
Automatic Load Sensing Power Switch		168,109		16	*
Car Battery Charger		884,004		159	*
Dual Polarity Power Supply		372,002		84	*
Fixed Voltage Power Supply		312,001		52	*
High Current Power Supply		339,804		66	*
High Voltage High Current Power Supply		264,783		35	*
LASER Power Supply		296,954		28
Portable CD Player Adapter For Car		213,141		12	*
Power Supply		739,339		259	*
Solid State Tesla Coil NEW!		147,179		4
Solid State Tesla Coil/High Voltage Generator		445,245		51
Transformerless Power Supply		463,910		117	*
Voltage Inverter		339,840		51	*
Voltage Inverter II		203,922		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		586,225		182
3 Watt FM Transmitter	Rae XL Tkacik	336,171		83	*
50 Watt Amplifier		508,636		74
8 Note Tune Player		141,432		12	*
8 Watt Audio Amp		373,746		67	*
Aircraft Radio Communications Receiver		279,346		49	*
Crystal Radio		159,697		53	*
Digital Volume Control		339,318		47	*
Electronic Stethoscope		322,071		142	*
FET Audio Mixer		344,419		41
FM Transmitter		1,009,212		420
Guitar Fuzz Effect		248,454		54	*
Microphone Mixer	Anatoly I. Shikhatov	251,418		26	*
Mono To Stereo Synthesizer	oRbEq	134,618		18	*
One Tube Regenerative Radio NEW!		143,165		4	*
Op Amp Radio		389,742		80	*
Single Chip AM Radio NEW!		100,597		3	*
Single Chip FM Radio NEW!		173,446		1	*
Sound Level Meter		342,819		51	*
Stereo Tube Amplifier	Weslee Kinsler	269,141		15	*
Tone Control		310,586		31
Transistor Organ		200,511		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		164,370		27	*
FM Telephone Bug		236,183		57
Phone Busy Indicator		214,738		24	*
Remote Telephone Ringer		119,070		3	*
Ringing Phone Light Flasher		219,220		35	*
Simple Phone Tap	Derek Tombrello	384,421		98	*
Telephone Hold Button		129,876		10
Telephone Recorder		217,426		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.