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, May 03, 2024	12VDC To 120VAC Inverter	12
	FM Transmitter	10
Yesterday Thursday, May 02, 2024	Power Supply	519
	12VDC To 120VAC Inverter	42
Of All Time	12VDC To 120VAC Inverter	1,531,947
	FM Transmitter	1,009,574

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		227,706		61	*
Car Alarm Arming Horn Beep Canceller	bob	137,286		6	*
Wireless Auto Tachometer		343,840		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	160,563		29	*
Parallel (Printer) Port Interface		286,689		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		448,499		63	*
3 Channel Spectrum Analyzer		222,586		20
40W Fluorescent Lamp Inverter	Bart Milnes	330,960		60	*
Adjustable Strobe Light		309,846		36
Black Light		281,599		29
Colour (Sound) Organ		291,529		36
Electronic Dice NEW!		190,019		10	*
Fantastic Atom Expander		203,757		25
Flash Slave Trigger		222,023		18	*
Infa-Red Remote Control		638,070		216	*
IR Remote Extender NEW!		133,514		3	*
IR Remote Jammer	Carl	267,005		110	*
IR Remote Switch NEW!		158,457		9	*
LASER Transmitter/Receiver		417,418		92
LED Chaser		446,870		83	*
LED Metronome NEW!		100,240		3	*
LED Thermometer		207,544		22	*
Light/Dark Detector		306,947		90	*
Simple Colour Organ		138,270		11	*
Strobe Light		276,658		27	*
TRIAC Light Dimmer		553,766		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		360,237		122	*
Electromagnetic Levitator NEW!		145,202		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		923,236		214	*
AC Motor Speed Controller		392,393		29	*
Air Flow Detector		252,626		54	*
Digital Keypad Combination Lock		203,121		20
Low Voltage Alarm		230,102		58	*
Pine Racecar Victory Judge		103,486		1	*
Pulse Width Modulation DC Motor Control		655,884		94
Rain Detector		305,559		112	*
Simple Lie Detector		565,549		323
Simple Polarity Tester	Dudley LeRoux	166,262		13	*
Simple Servo Controller		222,328		22	*
Simple Touch Switch NEW!		170,756		6	*
Simple Two Speed Contactor DC Motor Controller		206,080		21	*
Stepper Motor Controller		747,097		120	*
Time Delay Relay		556,545		88
Time Delay Relay II	jawaharlal@excite.com	247,943		39	*
Touch Switch		290,616		51	*
Video Activated Relay		122,605		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	182,175		10	*
Water Detector With Sump/Bilge Pump Controller		153,661		18	*
Wire Loop Alarm	Alex Meaden	206,554		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		317,078		25	*
12VDC To 120VAC Inverter		1,531,947		691
6V to 12V Converter		528,576		121
Automatic 12V Lead Acid Battery Charger		938,265		248
Automatic Load Sensing Power Switch		168,288		16	*
Car Battery Charger		884,228		159	*
Dual Polarity Power Supply		372,174		84	*
Fixed Voltage Power Supply		312,159		52	*
High Current Power Supply		340,036		66	*
High Voltage High Current Power Supply		264,936		35	*
LASER Power Supply		297,145		28
Portable CD Player Adapter For Car		213,283		12	*
Power Supply		740,054		259	*
Solid State Tesla Coil NEW!		147,350		4
Solid State Tesla Coil/High Voltage Generator		445,462		51
Transformerless Power Supply		464,097		117	*
Voltage Inverter		340,126		51	*
Voltage Inverter II		204,105		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		586,418		182
3 Watt FM Transmitter	Rae XL Tkacik	336,370		83	*
50 Watt Amplifier		508,847		74
8 Note Tune Player		141,557		12	*
8 Watt Audio Amp		374,040		67	*
Aircraft Radio Communications Receiver		279,566		49	*
Crystal Radio		159,850		53	*
Digital Volume Control		339,484		47	*
Electronic Stethoscope		322,251		142	*
FET Audio Mixer		344,574		41
FM Transmitter		1,009,574		420
Guitar Fuzz Effect		248,636		54	*
Microphone Mixer	Anatoly I. Shikhatov	251,568		26	*
Mono To Stereo Synthesizer	oRbEq	134,775		18	*
One Tube Regenerative Radio NEW!		143,452		4	*
Op Amp Radio		389,991		80	*
Single Chip AM Radio NEW!		100,725		3	*
Single Chip FM Radio NEW!		173,636		1	*
Sound Level Meter		342,992		51	*
Stereo Tube Amplifier	Weslee Kinsler	269,309		15	*
Tone Control		310,751		31
Transistor Organ		200,688		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		164,475		27	*
FM Telephone Bug		236,285		57
Phone Busy Indicator		214,864		24	*
Remote Telephone Ringer		119,170		3	*
Ringing Phone Light Flasher		219,375		35	*
Simple Phone Tap	Derek Tombrello	384,534		98	*
Telephone Hold Button		130,004		10
Telephone Recorder		217,537		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.