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 Wednesday, December 02, 2020	Computerize Your Room/Home	7
	8 Note Tune Player	7
Yesterday Tuesday, December 01, 2020	12VDC To 120VAC Inverter	36
	Car Battery Charger	24
Of All Time	12VDC To 120VAC Inverter	1,474,903
	FM Transmitter	973,737

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		212,845		61	*
Car Alarm Arming Horn Beep Canceller	bob	123,845		6	*
Wireless Auto Tachometer		326,385		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	148,713		29	*
Parallel (Printer) Port Interface		266,953		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		426,922		63	*
3 Channel Spectrum Analyzer		206,245		20
40W Fluorescent Lamp Inverter	Bart Milnes	314,956		60	*
Adjustable Strobe Light		291,111		36
Black Light		256,383		29
Colour (Sound) Organ		273,308		36
Electronic Dice NEW!		174,368		10	*
Fantastic Atom Expander		187,546		25
Flash Slave Trigger		205,124		18	*
Infa-Red Remote Control		614,997		216	*
IR Remote Extender NEW!		116,857		2	*
IR Remote Jammer	Carl	246,903		110	*
IR Remote Switch NEW!		144,711		9	*
LASER Transmitter/Receiver		392,764		92
LED Chaser		428,981		83	*
LED Metronome NEW!		90,690		3	*
LED Thermometer		194,699		22	*
Light/Dark Detector		293,299		90	*
Simple Colour Organ		126,834		10	*
Strobe Light		261,312		27	*
TRIAC Light Dimmer		534,461		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		343,181		122	*
Electromagnetic Levitator NEW!		131,817		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		899,426		214	*
AC Motor Speed Controller		369,065		29	*
Air Flow Detector		238,956		54	*
Digital Keypad Combination Lock		184,316		20
Low Voltage Alarm		213,814		58	*
Pine Racecar Victory Judge		92,594		1	*
Pulse Width Modulation DC Motor Control		632,342		94
Rain Detector		291,806		112	*
Simple Lie Detector		544,864		323
Simple Polarity Tester	Dudley LeRoux	151,367		13	*
Simple Servo Controller		207,252		22	*
Simple Touch Switch NEW!		156,947		5	*
Simple Two Speed Contactor DC Motor Controller		192,271		21	*
Stepper Motor Controller		722,495		120	*
Time Delay Relay		540,542		88
Time Delay Relay II	jawaharlal@excite.com	229,725		39	*
Touch Switch		276,070		51	*
Video Activated Relay		110,436		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	166,552		10	*
Water Detector With Sump/Bilge Pump Controller		139,448		18	*
Wire Loop Alarm	Alex Meaden	193,715		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		296,970		25	*
12VDC To 120VAC Inverter		1,474,903		689
6V to 12V Converter		505,037		121
Automatic 12V Lead Acid Battery Charger		911,872		248
Automatic Load Sensing Power Switch		152,576		16	*
Car Battery Charger		862,441		159	*
Dual Polarity Power Supply		356,741		84	*
Fixed Voltage Power Supply		295,886		52	*
High Current Power Supply		320,358		66	*
High Voltage High Current Power Supply		239,117		35	*
LASER Power Supply		279,254		28
Portable CD Player Adapter For Car		197,940		12	*
Power Supply		718,735		259	*
Solid State Tesla Coil NEW!		132,661		4
Solid State Tesla Coil/High Voltage Generator		421,330		50
Transformerless Power Supply		446,782		117	*
Voltage Inverter		319,680		51	*
Voltage Inverter II		188,349		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		568,991		182
3 Watt FM Transmitter	Rae XL Tkacik	317,363		83	*
50 Watt Amplifier		490,083		74
8 Note Tune Player		129,646		12	*
8 Watt Audio Amp		354,634		67	*
Aircraft Radio Communications Receiver		260,407		49	*
Crystal Radio		149,410		53	*
Digital Volume Control		317,419		47	*
Electronic Stethoscope		296,546		141	*
FET Audio Mixer		326,677		41
FM Transmitter		973,737		420
Guitar Fuzz Effect		229,892		52	*
Microphone Mixer	Anatoly I. Shikhatov	236,115		26	*
Mono To Stereo Synthesizer	oRbEq	119,093		18	*
One Tube Regenerative Radio NEW!		121,792		4	*
Op Amp Radio		368,189		80	*
Single Chip AM Radio NEW!		89,940		2	*
Single Chip FM Radio NEW!		156,614		1	*
Sound Level Meter		326,572		51	*
Stereo Tube Amplifier	Weslee Kinsler	253,553		15	*
Tone Control		292,308		31
Transistor Organ		183,622		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		152,195		27	*
FM Telephone Bug		224,243		57
Phone Busy Indicator		202,435		24	*
Remote Telephone Ringer		107,475		3	*
Ringing Phone Light Flasher		200,972		35	*
Simple Phone Tap	Derek Tombrello	371,351		98	*
Telephone Hold Button		117,116		10
Telephone Recorder		203,819		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.