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, May 30, 2020	12VDC Fluorescent Lamp Driver	74
	12VDC To 120VAC Inverter	56
Yesterday Friday, May 29, 2020	7 Segment LED Counter	74
	Electronic Dice	67
Of All Time	12VDC To 120VAC Inverter	1,465,321
	FM Transmitter	968,370

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		209,008		61	*
Car Alarm Arming Horn Beep Canceller	bob	120,211		6	*
Wireless Auto Tachometer		322,025		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	145,881		29	*
Parallel (Printer) Port Interface		262,193		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		421,442		63	*
3 Channel Spectrum Analyzer		202,652		20
40W Fluorescent Lamp Inverter	Bart Milnes	311,058		60	*
Adjustable Strobe Light		286,464		36
Black Light		251,012		29
Colour (Sound) Organ		268,737		36
Electronic Dice NEW!		170,490		10	*
Fantastic Atom Expander		183,402		25
Flash Slave Trigger		201,036		18	*
Infa-Red Remote Control		610,521		216	*
IR Remote Extender NEW!		112,419		2	*
IR Remote Jammer	Carl	243,710		110	*
IR Remote Switch NEW!		140,885		9	*
LASER Transmitter/Receiver		387,713		92
LED Chaser		425,503		83	*
LED Metronome NEW!		88,582		3	*
LED Thermometer		191,748		22	*
Light/Dark Detector		289,802		90	*
Simple Colour Organ		124,047		10	*
Strobe Light		258,209		27	*
TRIAC Light Dimmer		480,220		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		335,846		122	*
Electromagnetic Levitator NEW!		128,507		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		893,582		214	*
AC Motor Speed Controller		364,770		29	*
Air Flow Detector		235,663		54	*
Digital Keypad Combination Lock		181,232		20
Low Voltage Alarm		210,603		58	*
Pine Racecar Victory Judge		89,813		1	*
Pulse Width Modulation DC Motor Control		628,630		94
Rain Detector		288,778		112	*
Simple Lie Detector		541,227		323
Simple Polarity Tester	Dudley LeRoux	147,675		13	*
Simple Servo Controller		204,132		22	*
Simple Touch Switch NEW!		153,838		5	*
Simple Two Speed Contactor DC Motor Controller		189,149		21	*
Stepper Motor Controller		717,107		120	*
Time Delay Relay		536,494		88
Time Delay Relay II	jawaharlal@excite.com	225,914		39	*
Touch Switch		272,666		51	*
Video Activated Relay		107,777		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	163,299		10	*
Water Detector With Sump/Bilge Pump Controller		134,227		18	*
Wire Loop Alarm	Alex Meaden	190,706		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		292,949		25	*
12VDC To 120VAC Inverter		1,465,321		689
6V to 12V Converter		497,684		121
Automatic 12V Lead Acid Battery Charger		906,420		247
Automatic Load Sensing Power Switch		148,971		16	*
Car Battery Charger		857,195		159	*
Dual Polarity Power Supply		354,076		84	*
Fixed Voltage Power Supply		292,648		52	*
High Current Power Supply		316,194		65	*
High Voltage High Current Power Supply		236,016		35	*
LASER Power Supply		275,734		28
Portable CD Player Adapter For Car		194,412		12	*
Power Supply		714,450		259	*
Solid State Tesla Coil NEW!		130,077		4
Solid State Tesla Coil/High Voltage Generator		415,955		50
Transformerless Power Supply		442,539		117	*
Voltage Inverter		316,528		51	*
Voltage Inverter II		185,357		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		564,802		182
3 Watt FM Transmitter	Rae XL Tkacik	313,530		82	*
50 Watt Amplifier		486,167		74
8 Note Tune Player		126,904		12	*
8 Watt Audio Amp		350,137		67	*
Aircraft Radio Communications Receiver		256,911		49	*
Crystal Radio		147,426		53	*
Digital Volume Control		313,843		47	*
Electronic Stethoscope		292,426		141	*
FET Audio Mixer		322,848		41
FM Transmitter		968,370		419
Guitar Fuzz Effect		226,264		52	*
Microphone Mixer	Anatoly I. Shikhatov	232,783		26	*
Mono To Stereo Synthesizer	oRbEq	115,709		18	*
One Tube Regenerative Radio NEW!		118,903		4	*
Op Amp Radio		364,138		80	*
Single Chip AM Radio NEW!		88,144		2	*
Single Chip FM Radio NEW!		153,045		1	*
Sound Level Meter		323,266		51	*
Stereo Tube Amplifier	Weslee Kinsler	250,277		15	*
Tone Control		288,314		31
Transistor Organ		180,202		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		149,341		27	*
FM Telephone Bug		221,071		57
Phone Busy Indicator		199,749		24	*
Remote Telephone Ringer		104,451		3	*
Ringing Phone Light Flasher		197,230		35	*
Simple Phone Tap	Derek Tombrello	351,517		98	*
Telephone Hold Button		114,380		10
Telephone Recorder		200,281		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.