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, May 29, 2023	12VDC To 120VAC Inverter	44
	FM Transmitter	27
Yesterday Sunday, May 28, 2023	Power Supply	398
	12VDC To 120VAC Inverter	59
Of All Time	12VDC To 120VAC Inverter	1,515,382
	FM Transmitter	1,001,491

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		224,855		61	*
Car Alarm Arming Horn Beep Canceller	bob	134,704		6	*
Wireless Auto Tachometer		340,574		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	158,196		29	*
Parallel (Printer) Port Interface		282,584		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		444,754		63	*
3 Channel Spectrum Analyzer		218,834		20
40W Fluorescent Lamp Inverter	Bart Milnes	327,866		60	*
Adjustable Strobe Light		306,227		36
Black Light		276,355		29
Colour (Sound) Organ		287,805		36
Electronic Dice NEW!		186,771		10	*
Fantastic Atom Expander		201,067		25
Flash Slave Trigger		219,074		18	*
Infa-Red Remote Control		631,190		216	*
IR Remote Extender NEW!		130,130		2	*
IR Remote Jammer	Carl	262,781		110	*
IR Remote Switch NEW!		155,643		9	*
LASER Transmitter/Receiver		411,962		92
LED Chaser		443,012		83	*
LED Metronome NEW!		97,502		3	*
LED Thermometer		204,749		22	*
Light/Dark Detector		304,041		90	*
Simple Colour Organ		135,843		11	*
Strobe Light		273,148		27	*
TRIAC Light Dimmer		548,663		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		356,819		122	*
Electromagnetic Levitator NEW!		142,248		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		918,757		214	*
AC Motor Speed Controller		386,311		29	*
Air Flow Detector		249,667		54	*
Digital Keypad Combination Lock		194,722		20
Low Voltage Alarm		227,111		58	*
Pine Racecar Victory Judge		101,227		1	*
Pulse Width Modulation DC Motor Control		645,570		94
Rain Detector		302,481		112	*
Simple Lie Detector		561,079		323
Simple Polarity Tester	Dudley LeRoux	163,339		13	*
Simple Servo Controller		219,162		22	*
Simple Touch Switch NEW!		167,539		6	*
Simple Two Speed Contactor DC Motor Controller		202,728		21	*
Stepper Motor Controller		741,435		120	*
Time Delay Relay		552,832		88
Time Delay Relay II	jawaharlal@excite.com	244,083		39	*
Touch Switch		287,411		51	*
Video Activated Relay		119,984		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	178,257		10	*
Water Detector With Sump/Bilge Pump Controller		150,823		18	*
Wire Loop Alarm	Alex Meaden	203,865		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		311,136		25	*
12VDC To 120VAC Inverter		1,515,382		691
6V to 12V Converter		523,173		121
Automatic 12V Lead Acid Battery Charger		933,023		248
Automatic Load Sensing Power Switch		165,040		16	*
Car Battery Charger		879,711		159	*
Dual Polarity Power Supply		368,345		84	*
Fixed Voltage Power Supply		308,638		52	*
High Current Power Supply		334,752		66	*
High Voltage High Current Power Supply		250,425		35	*
LASER Power Supply		293,169		28
Portable CD Player Adapter For Car		210,083		12	*
Power Supply		734,606		259	*
Solid State Tesla Coil NEW!		143,291		4
Solid State Tesla Coil/High Voltage Generator		439,839		51
Transformerless Power Supply		460,290		117	*
Voltage Inverter		334,856		51	*
Voltage Inverter II		199,862		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		582,451		182
3 Watt FM Transmitter	Rae XL Tkacik	331,332		83	*
50 Watt Amplifier		504,428		74
8 Note Tune Player		138,966		12	*
8 Watt Audio Amp		369,130		67	*
Aircraft Radio Communications Receiver		274,716		49	*
Crystal Radio		156,692		53	*
Digital Volume Control		335,688		47	*
Electronic Stethoscope		312,292		142	*
FET Audio Mixer		340,650		41
FM Transmitter		1,001,491		420
Guitar Fuzz Effect		244,081		54	*
Microphone Mixer	Anatoly I. Shikhatov	248,035		26	*
Mono To Stereo Synthesizer	oRbEq	131,147		18	*
One Tube Regenerative Radio NEW!		136,159		4	*
Op Amp Radio		384,299		80	*
Single Chip AM Radio NEW!		97,618		3	*
Single Chip FM Radio NEW!		169,352		1	*
Sound Level Meter		339,186		51	*
Stereo Tube Amplifier	Weslee Kinsler	265,676		15	*
Tone Control		307,247		31
Transistor Organ		196,655		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		161,945		27	*
FM Telephone Bug		233,859		57
Phone Busy Indicator		212,356		24	*
Remote Telephone Ringer		116,724		3	*
Ringing Phone Light Flasher		214,770		35	*
Simple Phone Tap	Derek Tombrello	381,608		98	*
Telephone Hold Button		127,325		10
Telephone Recorder		214,753		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.