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 Saturday, September 22, 2018	Digital Keypad Combination Lock	4
	Stepper Motor Controller	3
Yesterday Friday, September 21, 2018	Dual Polarity Power Supply	141
	Stepper Motor Controller	112
Of All Time	12VDC To 120VAC Inverter	1,418,412
	FM Transmitter	938,496

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		191,615		61	*
Car Alarm Arming Horn Beep Canceller	bob	103,290		6	*
Wireless Auto Tachometer		298,723		58

Computer

Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computer Controlled Frequency Counter/Logic Probe	Richard van Wyk	133,721		29	*
Parallel (Printer) Port Interface		237,355		71

Light/Laser

Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		394,607		63	*
3 Channel Spectrum Analyzer		187,839		20
40W Fluorescent Lamp Inverter	Bart Milnes	291,304		60	*
Adjustable Strobe Light		265,513		36
Black Light		227,452		29
Colour (Sound) Organ		249,259		36
Electronic Dice NEW!		152,178		10	*
Fantastic Atom Expander		163,358		25
Flash Slave Trigger		183,654		18	*
Infa-Red Remote Control		584,574		216	*
IR Remote Extender NEW!		93,198		2	*
IR Remote Jammer	Carl	227,337		110	*
IR Remote Switch NEW!		123,158		9	*
LASER Transmitter/Receiver		365,489		92
LED Chaser		408,851		83	*
LED Metronome NEW!		81,864		3	*
LED Thermometer		177,943		22	*
Light/Dark Detector		276,448		90	*
Simple Colour Organ		112,461		10	*
Strobe Light		244,546		27	*
TRIAC Light Dimmer		457,218		55

Major Projects

Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		313,470		122	*
Electromagnetic Levitator NEW!		114,456		15	*

Other

Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		861,369		214	*
AC Motor Speed Controller		341,610		29	*
Air Flow Detector		221,563		54	*
Digital Keypad Combination Lock		164,913		20
Low Voltage Alarm		195,250		58	*
Pine Racecar Victory Judge		76,856		1	*
Pulse Width Modulation DC Motor Control		611,872		93
Rain Detector		274,409		112	*
Simple Lie Detector		520,176		323
Simple Polarity Tester	Dudley LeRoux	129,944		13	*
Simple Servo Controller		185,635		22	*
Simple Touch Switch NEW!		140,681		5	*
Simple Two Speed Contactor DC Motor Controller		176,413		21	*
Stepper Motor Controller		687,361		120	*
Time Delay Relay		515,009		88
Time Delay Relay II	jawaharlal@excite.com	207,249		39	*
Touch Switch		258,213		51	*
Video Activated Relay		95,780		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	147,276		10	*
Water Detector With Sump/Bilge Pump Controller		121,436		18	*
Wire Loop Alarm	Alex Meaden	178,559		27	*

Power Supply

Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		270,543		25	*
12VDC To 120VAC Inverter		1,418,412		688
6V to 12V Converter		452,969		121
Automatic 12V Lead Acid Battery Charger		875,495		246
Automatic Load Sensing Power Switch		134,664		16	*
Car Battery Charger		828,192		159	*
Dual Polarity Power Supply		328,815		84	*
Fixed Voltage Power Supply		278,591		52	*
High Current Power Supply		296,192		65	*
High Voltage High Current Power Supply		222,146		35	*
LASER Power Supply		253,942		28
Portable CD Player Adapter For Car		180,415		12	*
Power Supply		689,642		259	*
Solid State Tesla Coil NEW!		119,002		4
Solid State Tesla Coil/High Voltage Generator		389,763		50
Transformerless Power Supply		419,708		117	*
Voltage Inverter		305,073		51	*
Voltage Inverter II		173,544		19	*

Sound/Radio

Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		547,190		182
3 Watt FM Transmitter	Rae XL Tkacik	296,813		82	*
50 Watt Amplifier		464,076		74
8 Note Tune Player		115,809		12	*
8 Watt Audio Amp		329,621		67	*
Aircraft Radio Communications Receiver		233,781		49	*
Crystal Radio		136,893		53	*
Digital Volume Control		297,293		47	*
Electronic Stethoscope		274,474		141	*
FET Audio Mixer		306,187		41
FM Transmitter		938,496		419
Guitar Fuzz Effect		206,507		52	*
Microphone Mixer	Anatoly I. Shikhatov	215,550		26	*
Mono To Stereo Synthesizer	oRbEq	98,992		18	*
One Tube Regenerative Radio NEW!		105,292		4	*
Op Amp Radio		345,350		80	*
Single Chip AM Radio NEW!		80,713		2	*
Single Chip FM Radio NEW!		134,175		1	*
Sound Level Meter		305,055		51	*
Stereo Tube Amplifier	Weslee Kinsler	232,967		15	*
Tone Control		269,114		31
Transistor Organ		163,777		28

Telephone

Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		137,674		27	*
FM Telephone Bug		202,789		57
Phone Busy Indicator		184,910		24	*
Remote Telephone Ringer		93,543		3	*
Ringing Phone Light Flasher		182,596		34	*
Simple Phone Tap	Derek Tombrello	331,320		98	*
Telephone Hold Button		98,057		10
Telephone Recorder		183,586		54	*

Back To Electronics Page | Mail Me | Search

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.