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 Tuesday, April 16, 2024	Ringing Phone Light Flasher	37
	12VDC To 120VAC Inverter	23
Yesterday Monday, April 15, 2024	12VDC To 120VAC Inverter	60
	Voltage Inverter	37
Of All Time	12VDC To 120VAC Inverter	1,531,278
	FM Transmitter	1,009,139

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		227,555		61	*
Car Alarm Arming Horn Beep Canceller	bob	137,140		6	*
Wireless Auto Tachometer		343,679		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	160,442		29	*
Parallel (Printer) Port Interface		286,459		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		448,293		63	*
3 Channel Spectrum Analyzer		222,387		20
40W Fluorescent Lamp Inverter	Bart Milnes	330,787		60	*
Adjustable Strobe Light		309,669		36
Black Light		281,325		29
Colour (Sound) Organ		291,324		36
Electronic Dice NEW!		189,813		10	*
Fantastic Atom Expander		203,592		25
Flash Slave Trigger		221,851		18	*
Infa-Red Remote Control		637,832		216	*
IR Remote Extender NEW!		133,350		3	*
IR Remote Jammer	Carl	266,666		110	*
IR Remote Switch NEW!		158,288		9	*
LASER Transmitter/Receiver		417,150		92
LED Chaser		446,675		83	*
LED Metronome NEW!		100,062		3	*
LED Thermometer		207,387		22	*
Light/Dark Detector		306,795		90	*
Simple Colour Organ		138,139		11	*
Strobe Light		276,510		27	*
TRIAC Light Dimmer		553,476		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		360,027		122	*
Electromagnetic Levitator NEW!		145,067		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		922,978		214	*
AC Motor Speed Controller		392,088		29	*
Air Flow Detector		252,452		54	*
Digital Keypad Combination Lock		202,969		20
Low Voltage Alarm		229,909		58	*
Pine Racecar Victory Judge		103,327		1	*
Pulse Width Modulation DC Motor Control		655,595		94
Rain Detector		305,369		112	*
Simple Lie Detector		565,326		323
Simple Polarity Tester	Dudley LeRoux	166,107		13	*
Simple Servo Controller		222,116		22	*
Simple Touch Switch NEW!		170,570		6	*
Simple Two Speed Contactor DC Motor Controller		205,914		21	*
Stepper Motor Controller		746,690		120	*
Time Delay Relay		556,332		88
Time Delay Relay II	jawaharlal@excite.com	247,739		39	*
Touch Switch		290,439		51	*
Video Activated Relay		122,455		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	181,975		10	*
Water Detector With Sump/Bilge Pump Controller		153,492		18	*
Wire Loop Alarm	Alex Meaden	206,409		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		316,771		25	*
12VDC To 120VAC Inverter		1,531,278		691
6V to 12V Converter		528,262		121
Automatic 12V Lead Acid Battery Charger		937,985		248
Automatic Load Sensing Power Switch		168,062		16	*
Car Battery Charger		883,971		159	*
Dual Polarity Power Supply		371,969		84	*
Fixed Voltage Power Supply		311,966		52	*
High Current Power Supply		339,766		66	*
High Voltage High Current Power Supply		264,752		35	*
LASER Power Supply		296,919		28
Portable CD Player Adapter For Car		213,119		12	*
Power Supply		739,296		259	*
Solid State Tesla Coil NEW!		147,146		4
Solid State Tesla Coil/High Voltage Generator		445,177		51
Transformerless Power Supply		463,875		117	*
Voltage Inverter		339,771		51	*
Voltage Inverter II		203,873		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		586,181		182
3 Watt FM Transmitter	Rae XL Tkacik	336,132		83	*
50 Watt Amplifier		508,587		74
8 Note Tune Player		141,403		12	*
8 Watt Audio Amp		373,659		67	*
Aircraft Radio Communications Receiver		279,291		49	*
Crystal Radio		159,668		53	*
Digital Volume Control		339,276		47	*
Electronic Stethoscope		322,015		142	*
FET Audio Mixer		344,377		41
FM Transmitter		1,009,139		420
Guitar Fuzz Effect		248,421		54	*
Microphone Mixer	Anatoly I. Shikhatov	251,393		26	*
Mono To Stereo Synthesizer	oRbEq	134,583		18	*
One Tube Regenerative Radio NEW!		143,107		4	*
Op Amp Radio		389,667		80	*
Single Chip AM Radio NEW!		100,559		3	*
Single Chip FM Radio NEW!		173,404		1	*
Sound Level Meter		342,790		51	*
Stereo Tube Amplifier	Weslee Kinsler	269,103		15	*
Tone Control		310,549		31
Transistor Organ		200,479		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		164,346		27	*
FM Telephone Bug		236,164		57
Phone Busy Indicator		214,717		24	*
Remote Telephone Ringer		119,048		3	*
Ringing Phone Light Flasher		219,180		35	*
Simple Phone Tap	Derek Tombrello	384,399		98	*
Telephone Hold Button		129,850		10
Telephone Recorder		217,394		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.