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 Monday, March 20, 2023	12VDC To 120VAC Inverter	38
	FM Transmitter	33
Yesterday Sunday, March 19, 2023	12VDC To 120VAC Inverter	45
	Black Light	25
Of All Time	12VDC To 120VAC Inverter	1,512,385
	FM Transmitter	999,837

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		224,330		61	*
Car Alarm Arming Horn Beep Canceller	bob	134,178		6	*
Wireless Auto Tachometer		339,846		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	157,729		29	*
Parallel (Printer) Port Interface		281,862		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		443,942		63	*
3 Channel Spectrum Analyzer		218,173		20
40W Fluorescent Lamp Inverter	Bart Milnes	327,273		60	*
Adjustable Strobe Light		305,484		36
Black Light		275,269		29
Colour (Sound) Organ		287,085		36
Electronic Dice NEW!		186,041		10	*
Fantastic Atom Expander		200,533		25
Flash Slave Trigger		218,446		18	*
Infa-Red Remote Control		630,467		216	*
IR Remote Extender NEW!		129,317		2	*
IR Remote Jammer	Carl	262,129		110	*
IR Remote Switch NEW!		155,072		9	*
LASER Transmitter/Receiver		411,031		92
LED Chaser		442,328		83	*
LED Metronome NEW!		97,109		3	*
LED Thermometer		204,258		22	*
Light/Dark Detector		303,537		90	*
Simple Colour Organ		135,357		11	*
Strobe Light		272,639		27	*
TRIAC Light Dimmer		547,789		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		356,132		122	*
Electromagnetic Levitator NEW!		141,567		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		917,866		214	*
AC Motor Speed Controller		385,180		29	*
Air Flow Detector		249,137		54	*
Digital Keypad Combination Lock		194,185		20
Low Voltage Alarm		226,608		58	*
Pine Racecar Victory Judge		100,817		1	*
Pulse Width Modulation DC Motor Control		644,911		94
Rain Detector		301,936		112	*
Simple Lie Detector		560,333		323
Simple Polarity Tester	Dudley LeRoux	162,783		13	*
Simple Servo Controller		218,516		22	*
Simple Touch Switch NEW!		166,973		6	*
Simple Two Speed Contactor DC Motor Controller		202,157		21	*
Stepper Motor Controller		740,455		120	*
Time Delay Relay		552,196		88
Time Delay Relay II	jawaharlal@excite.com	243,288		39	*
Touch Switch		286,838		51	*
Video Activated Relay		119,503		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	177,533		10	*
Water Detector With Sump/Bilge Pump Controller		150,287		18	*
Wire Loop Alarm	Alex Meaden	203,331		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		310,124		25	*
12VDC To 120VAC Inverter		1,512,385		691
6V to 12V Converter		522,289		121
Automatic 12V Lead Acid Battery Charger		932,030		248
Automatic Load Sensing Power Switch		164,423		16	*
Car Battery Charger		878,926		159	*
Dual Polarity Power Supply		367,641		84	*
Fixed Voltage Power Supply		307,972		52	*
High Current Power Supply		333,869		66	*
High Voltage High Current Power Supply		249,829		35	*
LASER Power Supply		292,413		28
Portable CD Player Adapter For Car		209,482		12	*
Power Supply		733,362		259	*
Solid State Tesla Coil NEW!		142,539		4
Solid State Tesla Coil/High Voltage Generator		438,991		51
Transformerless Power Supply		459,562		117	*
Voltage Inverter		333,982		51	*
Voltage Inverter II		199,200		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		581,768		182
3 Watt FM Transmitter	Rae XL Tkacik	330,300		83	*
50 Watt Amplifier		503,622		74
8 Note Tune Player		138,457		12	*
8 Watt Audio Amp		368,269		67	*
Aircraft Radio Communications Receiver		273,864		49	*
Crystal Radio		156,257		53	*
Digital Volume Control		334,992		47	*
Electronic Stethoscope		311,448		142	*
FET Audio Mixer		339,916		41
FM Transmitter		999,837		420
Guitar Fuzz Effect		243,326		54	*
Microphone Mixer	Anatoly I. Shikhatov	247,386		26	*
Mono To Stereo Synthesizer	oRbEq	130,500		18	*
One Tube Regenerative Radio NEW!		134,962		4	*
Op Amp Radio		383,236		80	*
Single Chip AM Radio NEW!		97,106		3	*
Single Chip FM Radio NEW!		168,500		1	*
Sound Level Meter		338,484		51	*
Stereo Tube Amplifier	Weslee Kinsler	264,972		15	*
Tone Control		306,507		31
Transistor Organ		195,952		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		161,482		27	*
FM Telephone Bug		233,422		57
Phone Busy Indicator		211,894		24	*
Remote Telephone Ringer		116,295		3	*
Ringing Phone Light Flasher		213,765		35	*
Simple Phone Tap	Derek Tombrello	381,124		98	*
Telephone Hold Button		126,835		10
Telephone Recorder		214,226		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.