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 Thursday, April 25, 2024	12VDC To 120VAC Inverter	18
	Parallel (Printer) Port Interface	16
Yesterday Wednesday, April 24, 2024	12VDC To 120VAC Inverter	52
	FM Transmitter	33
Of All Time	12VDC To 120VAC Inverter	1,531,665
	FM Transmitter	1,009,376

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		227,638		61	*
Car Alarm Arming Horn Beep Canceller	bob	137,217		6	*
Wireless Auto Tachometer		343,762		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	160,512		29	*
Parallel (Printer) Port Interface		286,590		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		448,413		63	*
3 Channel Spectrum Analyzer		222,504		20
40W Fluorescent Lamp Inverter	Bart Milnes	330,877		60	*
Adjustable Strobe Light		309,773		36
Black Light		281,479		29
Colour (Sound) Organ		291,440		36
Electronic Dice NEW!		189,930		10	*
Fantastic Atom Expander		203,680		25
Flash Slave Trigger		221,942		18	*
Infa-Red Remote Control		637,978		216	*
IR Remote Extender NEW!		133,448		3	*
IR Remote Jammer	Carl	266,922		110	*
IR Remote Switch NEW!		158,380		9	*
LASER Transmitter/Receiver		417,295		92
LED Chaser		446,782		83	*
LED Metronome NEW!		100,158		3	*
LED Thermometer		207,486		22	*
Light/Dark Detector		306,885		90	*
Simple Colour Organ		138,217		11	*
Strobe Light		276,595		27	*
TRIAC Light Dimmer		553,628		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		360,135		122	*
Electromagnetic Levitator NEW!		145,144		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		923,106		214	*
AC Motor Speed Controller		392,267		29	*
Air Flow Detector		252,546		54	*
Digital Keypad Combination Lock		203,053		20
Low Voltage Alarm		230,017		58	*
Pine Racecar Victory Judge		103,418		1	*
Pulse Width Modulation DC Motor Control		655,747		94
Rain Detector		305,469		112	*
Simple Lie Detector		565,452		323
Simple Polarity Tester	Dudley LeRoux	166,202		13	*
Simple Servo Controller		222,244		22	*
Simple Touch Switch NEW!		170,675		6	*
Simple Two Speed Contactor DC Motor Controller		206,007		21	*
Stepper Motor Controller		746,916		120	*
Time Delay Relay		556,450		88
Time Delay Relay II	jawaharlal@excite.com	247,842		39	*
Touch Switch		290,540		51	*
Video Activated Relay		122,543		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	182,094		10	*
Water Detector With Sump/Bilge Pump Controller		153,586		18	*
Wire Loop Alarm	Alex Meaden	206,486		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		316,933		25	*
12VDC To 120VAC Inverter		1,531,665		691
6V to 12V Converter		528,442		121
Automatic 12V Lead Acid Battery Charger		938,144		248
Automatic Load Sensing Power Switch		168,188		16	*
Car Battery Charger		884,103		159	*
Dual Polarity Power Supply		372,075		84	*
Fixed Voltage Power Supply		312,062		52	*
High Current Power Supply		339,919		66	*
High Voltage High Current Power Supply		264,857		35	*
LASER Power Supply		297,054		28
Portable CD Player Adapter For Car		213,210		12	*
Power Supply		739,431		259	*
Solid State Tesla Coil NEW!		147,270		4
Solid State Tesla Coil/High Voltage Generator		445,348		51
Transformerless Power Supply		463,988		117	*
Voltage Inverter		339,970		51	*
Voltage Inverter II		203,992		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		586,308		182
3 Watt FM Transmitter	Rae XL Tkacik	336,260		83	*
50 Watt Amplifier		508,724		74
8 Note Tune Player		141,485		12	*
8 Watt Audio Amp		373,870		67	*
Aircraft Radio Communications Receiver		279,458		49	*
Crystal Radio		159,760		53	*
Digital Volume Control		339,399		47	*
Electronic Stethoscope		322,140		142	*
FET Audio Mixer		344,490		41
FM Transmitter		1,009,376		420
Guitar Fuzz Effect		248,528		54	*
Microphone Mixer	Anatoly I. Shikhatov	251,491		26	*
Mono To Stereo Synthesizer	oRbEq	134,690		18	*
One Tube Regenerative Radio NEW!		143,312		4	*
Op Amp Radio		389,850		80	*
Single Chip AM Radio NEW!		100,650		3	*
Single Chip FM Radio NEW!		173,548		1	*
Sound Level Meter		342,897		51	*
Stereo Tube Amplifier	Weslee Kinsler	269,226		15	*
Tone Control		310,659		31
Transistor Organ		200,589		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		164,419		27	*
FM Telephone Bug		236,231		57
Phone Busy Indicator		214,784		24	*
Remote Telephone Ringer		119,110		3	*
Ringing Phone Light Flasher		219,301		35	*
Simple Phone Tap	Derek Tombrello	384,462		98	*
Telephone Hold Button		129,921		10
Telephone Recorder		217,468		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.