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, June 24, 2017	12VDC To 120VAC Inverter	17
	Strobe Light	15
Yesterday Friday, June 23, 2017	12VDC To 120VAC Inverter	131
	Simple Two Speed Contactor DC Motor Controller	55
Of All Time	12VDC To 120VAC Inverter	1,381,256
	FM Transmitter	918,567

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		183,812		61	*
Car Alarm Arming Horn Beep Canceller	bob	96,371		6	*
Wireless Auto Tachometer		290,689		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	127,659		29	*
Parallel (Printer) Port Interface		229,985		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		384,353		62	*
3 Channel Spectrum Analyzer		177,369		20
40W Fluorescent Lamp Inverter	Bart Milnes	283,243		60	*
Adjustable Strobe Light		255,209		36
Black Light		217,641		29
Colour (Sound) Organ		239,980		36
Electronic Dice NEW!		145,513		9	*
Fantastic Atom Expander		154,359		25
Flash Slave Trigger		175,957		17	*
Infa-Red Remote Control		572,126		216	*
IR Remote Extender NEW!		85,233		2	*
IR Remote Jammer	Carl	217,873		110	*
IR Remote Switch NEW!		115,399		9	*
LASER Transmitter/Receiver		355,391		92
LED Chaser		397,991		83	*
LED Metronome NEW!		75,941		3	*
LED Thermometer		169,399		22	*
Light/Dark Detector		267,729		89	*
Simple Colour Organ		106,036		10	*
Strobe Light		236,976		27	*
TRIAC Light Dimmer		445,921		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		305,331		122	*
Electromagnetic Levitator NEW!		105,993		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		844,146		214	*
AC Motor Speed Controller		327,745		29	*
Air Flow Detector		213,000		54	*
Digital Keypad Combination Lock		157,041		20
Low Voltage Alarm		185,263		58	*
Pine Racecar Victory Judge		70,606		1	*
Pulse Width Modulation DC Motor Control		599,990		93
Rain Detector		265,555		112	*
Simple Lie Detector		507,664		323
Simple Polarity Tester	Dudley LeRoux	121,808		13	*
Simple Servo Controller		177,579		22	*
Simple Touch Switch NEW!		132,946		5	*
Simple Two Speed Contactor DC Motor Controller		169,755		21	*
Stepper Motor Controller		661,582		120	*
Time Delay Relay		500,639		88
Time Delay Relay II	jawaharlal@excite.com	197,743		39	*
Touch Switch		249,061		51	*
Video Activated Relay		88,456		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	139,867		10	*
Water Detector With Sump/Bilge Pump Controller		113,734		18	*
Wire Loop Alarm	Alex Meaden	171,337		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		257,808		25	*
12VDC To 120VAC Inverter		1,381,256		687
6V to 12V Converter		435,243		121
Automatic 12V Lead Acid Battery Charger		851,919		246
Automatic Load Sensing Power Switch		126,864		15	*
Car Battery Charger		806,365		159	*
Dual Polarity Power Supply		294,464		84	*
Fixed Voltage Power Supply		270,598		52	*
High Current Power Supply		287,257		64	*
High Voltage High Current Power Supply		214,937		35	*
LASER Power Supply		244,224		28
Portable CD Player Adapter For Car		171,903		12	*
Power Supply		672,919		259	*
Solid State Tesla Coil NEW!		110,057		3
Solid State Tesla Coil/High Voltage Generator		374,619		50
Transformerless Power Supply		409,847		117	*
Voltage Inverter		295,802		51	*
Voltage Inverter II		167,911		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		533,755		182
3 Watt FM Transmitter	Rae XL Tkacik	286,809		81	*
50 Watt Amplifier		449,544		74
8 Note Tune Player		109,764		12	*
8 Watt Audio Amp		318,382		67	*
Aircraft Radio Communications Receiver		223,069		49	*
Crystal Radio		130,523		53	*
Digital Volume Control		287,816		47	*
Electronic Stethoscope		263,227		141	*
FET Audio Mixer		292,954		40
FM Transmitter		918,567		418
Guitar Fuzz Effect		197,226		52	*
Microphone Mixer	Anatoly I. Shikhatov	206,052		26	*
Mono To Stereo Synthesizer	oRbEq	92,407		18	*
One Tube Regenerative Radio NEW!		96,859		4	*
Op Amp Radio		332,078		80	*
Single Chip AM Radio NEW!		74,673		2	*
Single Chip FM Radio NEW!		124,885		1	*
Sound Level Meter		296,127		51	*
Stereo Tube Amplifier	Weslee Kinsler	225,171		15	*
Tone Control		258,629		31
Transistor Organ		155,851		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		132,245		27	*
FM Telephone Bug		195,860		57
Phone Busy Indicator		174,277		24	*
Remote Telephone Ringer		88,340		3	*
Ringing Phone Light Flasher		173,724		33	*
Simple Phone Tap	Derek Tombrello	323,517		98	*
Telephone Hold Button		92,341		9
Telephone Recorder		176,424		54	*

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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.