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 Sunday, May 05, 2024	12VDC To 120VAC Inverter	29
	Op Amp Radio	17
Yesterday Saturday, May 04, 2024	LASER Transmitter/Receiver	28
	One Tube Regenerative Radio	26
Of All Time	12VDC To 120VAC Inverter	1,532,023
	FM Transmitter	1,009,613

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		227,720		61	*
Car Alarm Arming Horn Beep Canceller	bob	137,293		6	*
Wireless Auto Tachometer		343,871		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	160,584		29	*
Parallel (Printer) Port Interface		286,712		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		448,529		63	*
3 Channel Spectrum Analyzer		222,612		20
40W Fluorescent Lamp Inverter	Bart Milnes	330,974		60	*
Adjustable Strobe Light		309,869		36
Black Light		281,634		29
Colour (Sound) Organ		291,543		36
Electronic Dice NEW!		190,031		10	*
Fantastic Atom Expander		203,771		25
Flash Slave Trigger		222,037		18	*
Infa-Red Remote Control		638,095		216	*
IR Remote Extender NEW!		133,530		3	*
IR Remote Jammer	Carl	267,026		110	*
IR Remote Switch NEW!		158,476		9	*
LASER Transmitter/Receiver		417,473		92
LED Chaser		446,890		83	*
LED Metronome NEW!		100,266		3	*
LED Thermometer		207,561		22	*
Light/Dark Detector		306,960		90	*
Simple Colour Organ		138,280		11	*
Strobe Light		276,673		27	*
TRIAC Light Dimmer		553,797		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		360,259		122	*
Electromagnetic Levitator NEW!		145,216		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		923,267		214	*
AC Motor Speed Controller		392,425		29	*
Air Flow Detector		252,639		54	*
Digital Keypad Combination Lock		203,135		20
Low Voltage Alarm		230,114		58	*
Pine Racecar Victory Judge		103,503		1	*
Pulse Width Modulation DC Motor Control		655,917		94
Rain Detector		305,594		112	*
Simple Lie Detector		565,572		323
Simple Polarity Tester	Dudley LeRoux	166,280		13	*
Simple Servo Controller		222,342		22	*
Simple Touch Switch NEW!		170,778		6	*
Simple Two Speed Contactor DC Motor Controller		206,096		21	*
Stepper Motor Controller		747,140		120	*
Time Delay Relay		556,580		88
Time Delay Relay II	jawaharlal@excite.com	247,970		39	*
Touch Switch		290,639		51	*
Video Activated Relay		122,629		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	182,205		10	*
Water Detector With Sump/Bilge Pump Controller		153,678		18	*
Wire Loop Alarm	Alex Meaden	206,576		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		317,115		25	*
12VDC To 120VAC Inverter		1,532,023		691
6V to 12V Converter		528,611		121
Automatic 12V Lead Acid Battery Charger		938,301		248
Automatic Load Sensing Power Switch		168,311		16	*
Car Battery Charger		884,249		159	*
Dual Polarity Power Supply		372,197		84	*
Fixed Voltage Power Supply		312,181		52	*
High Current Power Supply		340,076		66	*
High Voltage High Current Power Supply		264,958		35	*
LASER Power Supply		297,175		28
Portable CD Player Adapter For Car		213,301		12	*
Power Supply		740,087		259	*
Solid State Tesla Coil NEW!		147,368		4
Solid State Tesla Coil/High Voltage Generator		445,502		51
Transformerless Power Supply		464,128		117	*
Voltage Inverter		340,171		51	*
Voltage Inverter II		204,138		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		586,444		182
3 Watt FM Transmitter	Rae XL Tkacik	336,398		83	*
50 Watt Amplifier		508,879		74
8 Note Tune Player		141,571		12	*
8 Watt Audio Amp		374,079		67	*
Aircraft Radio Communications Receiver		279,604		49	*
Crystal Radio		159,879		53	*
Digital Volume Control		339,512		47	*
Electronic Stethoscope		322,272		142	*
FET Audio Mixer		344,596		41
FM Transmitter		1,009,613		420
Guitar Fuzz Effect		248,664		54	*
Microphone Mixer	Anatoly I. Shikhatov	251,589		26	*
Mono To Stereo Synthesizer	oRbEq	134,793		18	*
One Tube Regenerative Radio NEW!		143,502		4	*
Op Amp Radio		390,042		80	*
Single Chip AM Radio NEW!		100,755		3	*
Single Chip FM Radio NEW!		173,661		1	*
Sound Level Meter		343,015		51	*
Stereo Tube Amplifier	Weslee Kinsler	269,326		15	*
Tone Control		310,785		31
Transistor Organ		200,713		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		164,492		27	*
FM Telephone Bug		236,295		57
Phone Busy Indicator		214,879		24	*
Remote Telephone Ringer		119,181		3	*
Ringing Phone Light Flasher		219,416		35	*
Simple Phone Tap	Derek Tombrello	384,551		98	*
Telephone Hold Button		130,021		10
Telephone Recorder		217,551		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.