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 Friday, April 26, 2024	12VDC To 120VAC Inverter	15
	Black Light	12
Yesterday Thursday, April 25, 2024	12VDC To 120VAC Inverter	34
	Stepper Motor Controller	33
Of All Time	12VDC To 120VAC Inverter	1,531,696
	FM Transmitter	1,009,397

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		227,645		61	*
Car Alarm Arming Horn Beep Canceller	bob	137,219		6	*
Wireless Auto Tachometer		343,765		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	160,517		29	*
Parallel (Printer) Port Interface		286,605		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		448,419		63	*
3 Channel Spectrum Analyzer		222,512		20
40W Fluorescent Lamp Inverter	Bart Milnes	330,889		60	*
Adjustable Strobe Light		309,782		36
Black Light		281,500		29
Colour (Sound) Organ		291,445		36
Electronic Dice NEW!		189,946		10	*
Fantastic Atom Expander		203,691		25
Flash Slave Trigger		221,952		18	*
Infa-Red Remote Control		637,994		216	*
IR Remote Extender NEW!		133,454		3	*
IR Remote Jammer	Carl	266,941		110	*
IR Remote Switch NEW!		158,386		9	*
LASER Transmitter/Receiver		417,307		92
LED Chaser		446,795		83	*
LED Metronome NEW!		100,169		3	*
LED Thermometer		207,492		22	*
Light/Dark Detector		306,890		90	*
Simple Colour Organ		138,222		11	*
Strobe Light		276,606		27	*
TRIAC Light Dimmer		553,650		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		360,148		122	*
Electromagnetic Levitator NEW!		145,150		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		923,122		214	*
AC Motor Speed Controller		392,280		29	*
Air Flow Detector		252,553		54	*
Digital Keypad Combination Lock		203,056		20
Low Voltage Alarm		230,023		58	*
Pine Racecar Victory Judge		103,425		1	*
Pulse Width Modulation DC Motor Control		655,769		94
Rain Detector		305,476		112	*
Simple Lie Detector		565,463		323
Simple Polarity Tester	Dudley LeRoux	166,207		13	*
Simple Servo Controller		222,257		22	*
Simple Touch Switch NEW!		170,683		6	*
Simple Two Speed Contactor DC Motor Controller		206,016		21	*
Stepper Motor Controller		746,943		120	*
Time Delay Relay		556,459		88
Time Delay Relay II	jawaharlal@excite.com	247,852		39	*
Touch Switch		290,549		51	*
Video Activated Relay		122,556		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	182,101		10	*
Water Detector With Sump/Bilge Pump Controller		153,594		18	*
Wire Loop Alarm	Alex Meaden	206,494		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		316,949		25	*
12VDC To 120VAC Inverter		1,531,696		691
6V to 12V Converter		528,453		121
Automatic 12V Lead Acid Battery Charger		938,162		248
Automatic Load Sensing Power Switch		168,199		16	*
Car Battery Charger		884,119		159	*
Dual Polarity Power Supply		372,088		84	*
Fixed Voltage Power Supply		312,083		52	*
High Current Power Supply		339,930		66	*
High Voltage High Current Power Supply		264,871		35	*
LASER Power Supply		297,065		28
Portable CD Player Adapter For Car		213,219		12	*
Power Supply		739,446		259	*
Solid State Tesla Coil NEW!		147,276		4
Solid State Tesla Coil/High Voltage Generator		445,363		51
Transformerless Power Supply		463,997		117	*
Voltage Inverter		340,000		51	*
Voltage Inverter II		204,006		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		586,320		182
3 Watt FM Transmitter	Rae XL Tkacik	336,272		83	*
50 Watt Amplifier		508,738		74
8 Note Tune Player		141,494		12	*
8 Watt Audio Amp		373,891		67	*
Aircraft Radio Communications Receiver		279,468		49	*
Crystal Radio		159,767		53	*
Digital Volume Control		339,405		47	*
Electronic Stethoscope		322,159		142	*
FET Audio Mixer		344,500		41
FM Transmitter		1,009,397		420
Guitar Fuzz Effect		248,542		54	*
Microphone Mixer	Anatoly I. Shikhatov	251,497		26	*
Mono To Stereo Synthesizer	oRbEq	134,697		18	*
One Tube Regenerative Radio NEW!		143,330		4	*
Op Amp Radio		389,878		80	*
Single Chip AM Radio NEW!		100,658		3	*
Single Chip FM Radio NEW!		173,566		1	*
Sound Level Meter		342,909		51	*
Stereo Tube Amplifier	Weslee Kinsler	269,235		15	*
Tone Control		310,667		31
Transistor Organ		200,598		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		164,424		27	*
FM Telephone Bug		236,237		57
Phone Busy Indicator		214,798		24	*
Remote Telephone Ringer		119,123		3	*
Ringing Phone Light Flasher		219,311		35	*
Simple Phone Tap	Derek Tombrello	384,474		98	*
Telephone Hold Button		129,932		10
Telephone Recorder		217,474		55	*

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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.