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 28, 2023	Power Supply	394
	12VDC To 120VAC Inverter	35
Yesterday Saturday, May 27, 2023	FM Transmitter	32
	3 Watt FM Transmitter	18
Of All Time	12VDC To 120VAC Inverter	1,515,313
	FM Transmitter	1,001,458

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		224,840		61	*
Car Alarm Arming Horn Beep Canceller	bob	134,694		6	*
Wireless Auto Tachometer		340,557		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	158,183		29	*
Parallel (Printer) Port Interface		282,566		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		444,726		63	*
3 Channel Spectrum Analyzer		218,819		20
40W Fluorescent Lamp Inverter	Bart Milnes	327,854		60	*
Adjustable Strobe Light		306,216		36
Black Light		276,336		29
Colour (Sound) Organ		287,795		36
Electronic Dice NEW!		186,753		10	*
Fantastic Atom Expander		201,053		25
Flash Slave Trigger		219,066		18	*
Infa-Red Remote Control		631,167		216	*
IR Remote Extender NEW!		130,118		2	*
IR Remote Jammer	Carl	262,767		110	*
IR Remote Switch NEW!		155,635		9	*
LASER Transmitter/Receiver		411,947		92
LED Chaser		443,003		83	*
LED Metronome NEW!		97,490		3	*
LED Thermometer		204,726		22	*
Light/Dark Detector		304,026		90	*
Simple Colour Organ		135,834		11	*
Strobe Light		273,141		27	*
TRIAC Light Dimmer		548,649		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		356,791		122	*
Electromagnetic Levitator NEW!		142,238		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		918,741		214	*
AC Motor Speed Controller		386,291		29	*
Air Flow Detector		249,656		54	*
Digital Keypad Combination Lock		194,715		20
Low Voltage Alarm		227,104		58	*
Pine Racecar Victory Judge		101,216		1	*
Pulse Width Modulation DC Motor Control		645,557		94
Rain Detector		302,463		112	*
Simple Lie Detector		561,068		323
Simple Polarity Tester	Dudley LeRoux	163,332		13	*
Simple Servo Controller		219,141		22	*
Simple Touch Switch NEW!		167,519		6	*
Simple Two Speed Contactor DC Motor Controller		202,720		21	*
Stepper Motor Controller		741,415		120	*
Time Delay Relay		552,817		88
Time Delay Relay II	jawaharlal@excite.com	244,069		39	*
Touch Switch		287,392		51	*
Video Activated Relay		119,972		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	178,236		10	*
Water Detector With Sump/Bilge Pump Controller		150,812		18	*
Wire Loop Alarm	Alex Meaden	203,858		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		311,113		25	*
12VDC To 120VAC Inverter		1,515,313		691
6V to 12V Converter		523,152		121
Automatic 12V Lead Acid Battery Charger		933,008		248
Automatic Load Sensing Power Switch		165,016		16	*
Car Battery Charger		879,694		159	*
Dual Polarity Power Supply		368,325		84	*
Fixed Voltage Power Supply		308,624		52	*
High Current Power Supply		334,736		66	*
High Voltage High Current Power Supply		250,410		35	*
LASER Power Supply		293,150		28
Portable CD Player Adapter For Car		210,076		12	*
Power Supply		734,588		259	*
Solid State Tesla Coil NEW!		143,270		4
Solid State Tesla Coil/High Voltage Generator		439,824		51
Transformerless Power Supply		460,277		117	*
Voltage Inverter		334,834		51	*
Voltage Inverter II		199,853		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		582,429		182
3 Watt FM Transmitter	Rae XL Tkacik	331,311		83	*
50 Watt Amplifier		504,402		74
8 Note Tune Player		138,960		12	*
8 Watt Audio Amp		369,110		67	*
Aircraft Radio Communications Receiver		274,700		49	*
Crystal Radio		156,681		53	*
Digital Volume Control		335,669		47	*
Electronic Stethoscope		312,279		142	*
FET Audio Mixer		340,643		41
FM Transmitter		1,001,458		420
Guitar Fuzz Effect		244,066		54	*
Microphone Mixer	Anatoly I. Shikhatov	248,020		26	*
Mono To Stereo Synthesizer	oRbEq	131,135		18	*
One Tube Regenerative Radio NEW!		136,132		4	*
Op Amp Radio		384,283		80	*
Single Chip AM Radio NEW!		97,605		3	*
Single Chip FM Radio NEW!		169,343		1	*
Sound Level Meter		339,168		51	*
Stereo Tube Amplifier	Weslee Kinsler	265,661		15	*
Tone Control		307,232		31
Transistor Organ		196,631		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		161,931		27	*
FM Telephone Bug		233,855		57
Phone Busy Indicator		212,342		24	*
Remote Telephone Ringer		116,714		3	*
Ringing Phone Light Flasher		214,756		35	*
Simple Phone Tap	Derek Tombrello	381,597		98	*
Telephone Hold Button		127,316		10
Telephone Recorder		214,742		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.