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 Thursday, June 24, 2021	FM Transmitter	128
	12VDC To 120VAC Inverter	27
Yesterday Wednesday, June 23, 2021	12VDC To 120VAC Inverter	50
	Stepper Motor Controller	37
Of All Time	12VDC To 120VAC Inverter	1,488,273
	FM Transmitter	980,244

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		217,336		61	*
Car Alarm Arming Horn Beep Canceller	bob	128,116		6	*
Wireless Auto Tachometer		331,317		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	151,868		29	*
Parallel (Printer) Port Interface		272,470		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		433,894		63	*
3 Channel Spectrum Analyzer		210,174		20
40W Fluorescent Lamp Inverter	Bart Milnes	319,735		60	*
Adjustable Strobe Light		296,484		36
Black Light		262,707		29
Colour (Sound) Organ		278,476		36
Electronic Dice NEW!		178,992		10	*
Fantastic Atom Expander		192,694		25
Flash Slave Trigger		209,716		18	*
Infa-Red Remote Control		621,140		216	*
IR Remote Extender NEW!		121,740		2	*
IR Remote Jammer	Carl	251,834		110	*
IR Remote Switch NEW!		149,018		9	*
LASER Transmitter/Receiver		399,115		92
LED Chaser		432,909		83	*
LED Metronome NEW!		92,291		3	*
LED Thermometer		198,066		22	*
Light/Dark Detector		296,833		90	*
Simple Colour Organ		129,707		10	*
Strobe Light		264,739		27	*
TRIAC Light Dimmer		538,821		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		348,349		122	*
Electromagnetic Levitator NEW!		135,034		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		906,755		214	*
AC Motor Speed Controller		373,944		29	*
Air Flow Detector		242,400		54	*
Digital Keypad Combination Lock		187,694		20
Low Voltage Alarm		217,882		58	*
Pine Racecar Victory Judge		95,440		1	*
Pulse Width Modulation DC Motor Control		636,435		94
Rain Detector		295,031		112	*
Simple Lie Detector		548,844		323
Simple Polarity Tester	Dudley LeRoux	155,889		13	*
Simple Servo Controller		211,001		22	*
Simple Touch Switch NEW!		160,217		5	*
Simple Two Speed Contactor DC Motor Controller		195,488		21	*
Stepper Motor Controller		728,212		120	*
Time Delay Relay		544,513		88
Time Delay Relay II	jawaharlal@excite.com	234,416		39	*
Touch Switch		279,621		51	*
Video Activated Relay		113,507		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	170,162		10	*
Water Detector With Sump/Bilge Pump Controller		143,317		18	*
Wire Loop Alarm	Alex Meaden	196,911		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		301,262		25	*
12VDC To 120VAC Inverter		1,488,273		689
6V to 12V Converter		510,795		121
Automatic 12V Lead Acid Battery Charger		918,027		248
Automatic Load Sensing Power Switch		156,799		16	*
Car Battery Charger		867,500		159	*
Dual Polarity Power Supply		359,544		84	*
Fixed Voltage Power Supply		299,639		52	*
High Current Power Supply		324,561		66	*
High Voltage High Current Power Supply		242,638		35	*
LASER Power Supply		283,583		28
Portable CD Player Adapter For Car		201,783		12	*
Power Supply		723,834		259	*
Solid State Tesla Coil NEW!		135,285		4
Solid State Tesla Coil/High Voltage Generator		427,508		50
Transformerless Power Supply		451,037		117	*
Voltage Inverter		323,915		51	*
Voltage Inverter II		191,609		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		573,174		182
3 Watt FM Transmitter	Rae XL Tkacik	321,418		83	*
50 Watt Amplifier		494,605		74
8 Note Tune Player		132,707		12	*
8 Watt Audio Amp		359,129		67	*
Aircraft Radio Communications Receiver		264,598		49	*
Crystal Radio		151,127		53	*
Digital Volume Control		321,412		47	*
Electronic Stethoscope		301,722		142	*
FET Audio Mixer		331,225		41
FM Transmitter		980,244		420
Guitar Fuzz Effect		234,180		54	*
Microphone Mixer	Anatoly I. Shikhatov	239,906		26	*
Mono To Stereo Synthesizer	oRbEq	122,969		18	*
One Tube Regenerative Radio NEW!		124,827		4	*
Op Amp Radio		372,930		80	*
Single Chip AM Radio NEW!		91,790		2	*
Single Chip FM Radio NEW!		160,664		1	*
Sound Level Meter		330,274		51	*
Stereo Tube Amplifier	Weslee Kinsler	257,418		15	*
Tone Control		296,989		31
Transistor Organ		188,126		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		155,275		27	*
FM Telephone Bug		227,428		57
Phone Busy Indicator		205,338		24	*
Remote Telephone Ringer		110,589		3	*
Ringing Phone Light Flasher		204,898		35	*
Simple Phone Tap	Derek Tombrello	374,615		98	*
Telephone Hold Button		120,438		10
Telephone Recorder		207,558		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.