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, May 18, 2024	AC Motor Speed Controller	15
	12VDC To 120VAC Inverter	13
Yesterday Friday, May 17, 2024	12VDC To 120VAC Inverter	39
	One Tube Regenerative Radio	26
Of All Time	12VDC To 120VAC Inverter	1,532,481
	FM Transmitter	1,009,903

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		227,804		61	*
Car Alarm Arming Horn Beep Canceller	bob	137,353		6	*
Wireless Auto Tachometer		343,963		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	160,664		29	*
Parallel (Printer) Port Interface		286,838		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		448,638		63	*
3 Channel Spectrum Analyzer		222,718		20
40W Fluorescent Lamp Inverter	Bart Milnes	331,067		60	*
Adjustable Strobe Light		309,974		36
Black Light		281,816		29
Colour (Sound) Organ		291,666		36
Electronic Dice NEW!		190,152		10	*
Fantastic Atom Expander		203,849		25
Flash Slave Trigger		222,133		18	*
Infa-Red Remote Control		638,232		216	*
IR Remote Extender NEW!		133,640		3	*
IR Remote Jammer	Carl	267,222		110	*
IR Remote Switch NEW!		158,562		9	*
LASER Transmitter/Receiver		417,680		92
LED Chaser		447,062		83	*
LED Metronome NEW!		100,385		3	*
LED Thermometer		207,649		22	*
Light/Dark Detector		307,040		90	*
Simple Colour Organ		138,335		11	*
Strobe Light		276,750		27	*
TRIAC Light Dimmer		553,966		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		360,368		122	*
Electromagnetic Levitator NEW!		145,294		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		923,482		214	*
AC Motor Speed Controller		392,629		29	*
Air Flow Detector		252,734		54	*
Digital Keypad Combination Lock		203,224		20
Low Voltage Alarm		230,211		58	*
Pine Racecar Victory Judge		103,588		1	*
Pulse Width Modulation DC Motor Control		656,074		94
Rain Detector		305,715		112	*
Simple Lie Detector		565,686		323
Simple Polarity Tester	Dudley LeRoux	166,377		13	*
Simple Servo Controller		222,419		22	*
Simple Touch Switch NEW!		170,881		6	*
Simple Two Speed Contactor DC Motor Controller		206,195		21	*
Stepper Motor Controller		747,388		120	*
Time Delay Relay		556,717		88
Time Delay Relay II	jawaharlal@excite.com	248,106		39	*
Touch Switch		290,765		51	*
Video Activated Relay		122,740		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	182,325		10	*
Water Detector With Sump/Bilge Pump Controller		153,785		18	*
Wire Loop Alarm	Alex Meaden	206,638		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		317,296		25	*
12VDC To 120VAC Inverter		1,532,481		691
6V to 12V Converter		528,764		121
Automatic 12V Lead Acid Battery Charger		938,443		248
Automatic Load Sensing Power Switch		168,433		16	*
Car Battery Charger		884,376		159	*
Dual Polarity Power Supply		372,319		84	*
Fixed Voltage Power Supply		312,298		52	*
High Current Power Supply		340,251		66	*
High Voltage High Current Power Supply		265,101		35	*
LASER Power Supply		297,313		28
Portable CD Player Adapter For Car		213,382		12	*
Power Supply		740,213		259	*
Solid State Tesla Coil NEW!		147,513		4
Solid State Tesla Coil/High Voltage Generator		445,675		51
Transformerless Power Supply		464,279		117	*
Voltage Inverter		340,388		51	*
Voltage Inverter II		204,271		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		586,574		182
3 Watt FM Transmitter	Rae XL Tkacik	336,590		83	*
50 Watt Amplifier		509,060		74
8 Note Tune Player		141,654		12	*
8 Watt Audio Amp		374,341		67	*
Aircraft Radio Communications Receiver		279,770		49	*
Crystal Radio		160,011		53	*
Digital Volume Control		339,624		47	*
Electronic Stethoscope		322,408		142	*
FET Audio Mixer		344,732		41
FM Transmitter		1,009,903		420
Guitar Fuzz Effect		248,798		54	*
Microphone Mixer	Anatoly I. Shikhatov	251,695		26	*
Mono To Stereo Synthesizer	oRbEq	134,905		18	*
One Tube Regenerative Radio NEW!		143,763		4	*
Op Amp Radio		390,267		80	*
Single Chip AM Radio NEW!		100,846		3	*
Single Chip FM Radio NEW!		173,790		1	*
Sound Level Meter		343,152		51	*
Stereo Tube Amplifier	Weslee Kinsler	269,467		15	*
Tone Control		310,895		31
Transistor Organ		200,828		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		164,566		27	*
FM Telephone Bug		236,372		57
Phone Busy Indicator		214,976		24	*
Remote Telephone Ringer		119,262		3	*
Ringing Phone Light Flasher		219,565		35	*
Simple Phone Tap	Derek Tombrello	384,638		98	*
Telephone Hold Button		130,107		10
Telephone Recorder		217,635		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.