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	LASER Power Supply	6
	Colour (Sound) Organ	5
Yesterday Wednesday, April 24, 2024	12VDC To 120VAC Inverter	52
	FM Transmitter	33
Of All Time	12VDC To 120VAC Inverter	1,531,652
	FM Transmitter	1,009,371

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		227,634		61	*
Car Alarm Arming Horn Beep Canceller	bob	137,214		6	*
Wireless Auto Tachometer		343,760		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	160,510		29	*
Parallel (Printer) Port Interface		286,576		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		222,501		20
40W Fluorescent Lamp Inverter	Bart Milnes	330,873		60	*
Adjustable Strobe Light		309,772		36
Black Light		281,472		29
Colour (Sound) Organ		291,437		36
Electronic Dice NEW!		189,929		10	*
Fantastic Atom Expander		203,677		25
Flash Slave Trigger		221,940		18	*
Infa-Red Remote Control		637,977		216	*
IR Remote Extender NEW!		133,445		3	*
IR Remote Jammer	Carl	266,921		110	*
IR Remote Switch NEW!		158,374		9	*
LASER Transmitter/Receiver		417,294		92
LED Chaser		446,781		83	*
LED Metronome NEW!		100,156		3	*
LED Thermometer		207,483		22	*
Light/Dark Detector		306,883		90	*
Simple Colour Organ		138,216		11	*
Strobe Light		276,590		27	*
TRIAC Light Dimmer		553,624		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		360,133		122	*
Electromagnetic Levitator NEW!		145,142		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		923,100		214	*
AC Motor Speed Controller		392,257		29	*
Air Flow Detector		252,543		54	*
Digital Keypad Combination Lock		203,049		20
Low Voltage Alarm		230,015		58	*
Pine Racecar Victory Judge		103,416		1	*
Pulse Width Modulation DC Motor Control		655,745		94
Rain Detector		305,468		112	*
Simple Lie Detector		565,446		323
Simple Polarity Tester	Dudley LeRoux	166,199		13	*
Simple Servo Controller		222,241		22	*
Simple Touch Switch NEW!		170,672		6	*
Simple Two Speed Contactor DC Motor Controller		206,003		21	*
Stepper Motor Controller		746,905		120	*
Time Delay Relay		556,447		88
Time Delay Relay II	jawaharlal@excite.com	247,834		39	*
Touch Switch		290,537		51	*
Video Activated Relay		122,541		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	182,088		10	*
Water Detector With Sump/Bilge Pump Controller		153,584		18	*
Wire Loop Alarm	Alex Meaden	206,485		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		316,925		25	*
12VDC To 120VAC Inverter		1,531,652		691
6V to 12V Converter		528,435		121
Automatic 12V Lead Acid Battery Charger		938,138		248
Automatic Load Sensing Power Switch		168,185		16	*
Car Battery Charger		884,095		159	*
Dual Polarity Power Supply		372,069		84	*
Fixed Voltage Power Supply		312,061		52	*
High Current Power Supply		339,910		66	*
High Voltage High Current Power Supply		264,850		35	*
LASER Power Supply		297,049		28
Portable CD Player Adapter For Car		213,208		12	*
Power Supply		739,429		259	*
Solid State Tesla Coil NEW!		147,263		4
Solid State Tesla Coil/High Voltage Generator		445,347		51
Transformerless Power Supply		463,986		117	*
Voltage Inverter		339,965		51	*
Voltage Inverter II		203,985		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		586,305		182
3 Watt FM Transmitter	Rae XL Tkacik	336,255		83	*
50 Watt Amplifier		508,719		74
8 Note Tune Player		141,484		12	*
8 Watt Audio Amp		373,855		67	*
Aircraft Radio Communications Receiver		279,450		49	*
Crystal Radio		159,757		53	*
Digital Volume Control		339,394		47	*
Electronic Stethoscope		322,140		142	*
FET Audio Mixer		344,486		41
FM Transmitter		1,009,371		420
Guitar Fuzz Effect		248,526		54	*
Microphone Mixer	Anatoly I. Shikhatov	251,487		26	*
Mono To Stereo Synthesizer	oRbEq	134,681		18	*
One Tube Regenerative Radio NEW!		143,304		4	*
Op Amp Radio		389,843		80	*
Single Chip AM Radio NEW!		100,646		3	*
Single Chip FM Radio NEW!		173,544		1	*
Sound Level Meter		342,893		51	*
Stereo Tube Amplifier	Weslee Kinsler	269,220		15	*
Tone Control		310,655		31
Transistor Organ		200,587		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		164,415		27	*
FM Telephone Bug		236,226		57
Phone Busy Indicator		214,780		24	*
Remote Telephone Ringer		119,107		3	*
Ringing Phone Light Flasher		219,297		35	*
Simple Phone Tap	Derek Tombrello	384,458		98	*
Telephone Hold Button		129,916		10
Telephone Recorder		217,466		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.