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 19, 2020	12VDC To 120VAC Inverter	34
	Car Battery Charger	27
Yesterday Friday, September 18, 2020	12VDC To 120VAC Inverter	42
	Power Supply	30
Of All Time	12VDC To 120VAC Inverter	1,470,891
	FM Transmitter	971,706

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		211,772		61	*
Car Alarm Arming Horn Beep Canceller	bob	122,859		6	*
Wireless Auto Tachometer		324,983		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	147,903		29	*
Parallel (Printer) Port Interface		265,535		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		425,288		63	*
3 Channel Spectrum Analyzer		205,102		20
40W Fluorescent Lamp Inverter	Bart Milnes	313,757		60	*
Adjustable Strobe Light		289,670		36
Black Light		254,582		29
Colour (Sound) Organ		271,695		36
Electronic Dice NEW!		173,118		10	*
Fantastic Atom Expander		186,206		25
Flash Slave Trigger		203,911		18	*
Infa-Red Remote Control		613,539		216	*
IR Remote Extender NEW!		115,648		2	*
IR Remote Jammer	Carl	245,851		110	*
IR Remote Switch NEW!		143,511		9	*
LASER Transmitter/Receiver		391,012		92
LED Chaser		427,685		83	*
LED Metronome NEW!		90,012		3	*
LED Thermometer		193,739		22	*
Light/Dark Detector		292,237		90	*
Simple Colour Organ		126,021		10	*
Strobe Light		260,244		27	*
TRIAC Light Dimmer		533,277		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		341,226		122	*
Electromagnetic Levitator NEW!		130,831		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		897,597		214	*
AC Motor Speed Controller		367,468		29	*
Air Flow Detector		237,938		54	*
Digital Keypad Combination Lock		183,393		20
Low Voltage Alarm		212,745		58	*
Pine Racecar Victory Judge		91,833		1	*
Pulse Width Modulation DC Motor Control		630,937		94
Rain Detector		290,813		112	*
Simple Lie Detector		543,610		323
Simple Polarity Tester	Dudley LeRoux	150,267		13	*
Simple Servo Controller		206,152		22	*
Simple Touch Switch NEW!		156,026		5	*
Simple Two Speed Contactor DC Motor Controller		191,377		21	*
Stepper Motor Controller		720,624		120	*
Time Delay Relay		539,361		88
Time Delay Relay II	jawaharlal@excite.com	228,589		39	*
Touch Switch		275,054		51	*
Video Activated Relay		109,591		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	165,497		10	*
Water Detector With Sump/Bilge Pump Controller		137,533		18	*
Wire Loop Alarm	Alex Meaden	192,871		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		295,685		25	*
12VDC To 120VAC Inverter		1,470,891		689
6V to 12V Converter		502,728		121
Automatic 12V Lead Acid Battery Charger		909,932		247
Automatic Load Sensing Power Switch		151,342		16	*
Car Battery Charger		860,522		159	*
Dual Polarity Power Supply		355,652		84	*
Fixed Voltage Power Supply		294,773		52	*
High Current Power Supply		319,025		65	*
High Voltage High Current Power Supply		238,094		35	*
LASER Power Supply		277,998		28
Portable CD Player Adapter For Car		196,849		12	*
Power Supply		717,401		259	*
Solid State Tesla Coil NEW!		131,727		4
Solid State Tesla Coil/High Voltage Generator		419,529		50
Transformerless Power Supply		445,508		117	*
Voltage Inverter		318,420		51	*
Voltage Inverter II		187,479		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		567,738		182
3 Watt FM Transmitter	Rae XL Tkacik	316,125		82	*
50 Watt Amplifier		488,801		74
8 Note Tune Player		128,753		12	*
8 Watt Audio Amp		353,232		67	*
Aircraft Radio Communications Receiver		259,158		49	*
Crystal Radio		148,765		53	*
Digital Volume Control		316,303		47	*
Electronic Stethoscope		295,007		141	*
FET Audio Mixer		325,397		41
FM Transmitter		971,706		419
Guitar Fuzz Effect		228,623		52	*
Microphone Mixer	Anatoly I. Shikhatov	234,979		26	*
Mono To Stereo Synthesizer	oRbEq	117,955		18	*
One Tube Regenerative Radio NEW!		120,742		4	*
Op Amp Radio		366,760		80	*
Single Chip AM Radio NEW!		89,285		2	*
Single Chip FM Radio NEW!		155,450		1	*
Sound Level Meter		325,406		51	*
Stereo Tube Amplifier	Weslee Kinsler	252,459		15	*
Tone Control		290,879		31
Transistor Organ		182,405		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		151,314		27	*
FM Telephone Bug		223,273		57
Phone Busy Indicator		201,510		24	*
Remote Telephone Ringer		106,528		3	*
Ringing Phone Light Flasher		199,838		35	*
Simple Phone Tap	Derek Tombrello	370,379		98	*
Telephone Hold Button		116,223		10
Telephone Recorder		202,743		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.