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 Tuesday, April 16, 2024	Adjustable Strobe Light	3
	12VDC To 120VAC Inverter	3
Yesterday Monday, April 15, 2024	12VDC To 120VAC Inverter	60
	Voltage Inverter	37
Of All Time	12VDC To 120VAC Inverter	1,531,257
	FM Transmitter	1,009,125

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		227,551		61	*
Car Alarm Arming Horn Beep Canceller	bob	137,133		6	*
Wireless Auto Tachometer		343,671		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	160,436		29	*
Parallel (Printer) Port Interface		286,447		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		448,290		63	*
3 Channel Spectrum Analyzer		222,376		20
40W Fluorescent Lamp Inverter	Bart Milnes	330,783		60	*
Adjustable Strobe Light		309,662		36
Black Light		281,318		29
Colour (Sound) Organ		291,316		36
Electronic Dice NEW!		189,808		10	*
Fantastic Atom Expander		203,588		25
Flash Slave Trigger		221,841		18	*
Infa-Red Remote Control		637,823		216	*
IR Remote Extender NEW!		133,344		3	*
IR Remote Jammer	Carl	266,660		110	*
IR Remote Switch NEW!		158,280		9	*
LASER Transmitter/Receiver		417,139		92
LED Chaser		446,666		83	*
LED Metronome NEW!		100,054		3	*
LED Thermometer		207,380		22	*
Light/Dark Detector		306,787		90	*
Simple Colour Organ		138,135		11	*
Strobe Light		276,503		27	*
TRIAC Light Dimmer		553,466		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		360,022		122	*
Electromagnetic Levitator NEW!		145,063		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		922,970		214	*
AC Motor Speed Controller		392,077		29	*
Air Flow Detector		252,441		54	*
Digital Keypad Combination Lock		202,963		20
Low Voltage Alarm		229,903		58	*
Pine Racecar Victory Judge		103,325		1	*
Pulse Width Modulation DC Motor Control		655,588		94
Rain Detector		305,362		112	*
Simple Lie Detector		565,319		323
Simple Polarity Tester	Dudley LeRoux	166,102		13	*
Simple Servo Controller		222,111		22	*
Simple Touch Switch NEW!		170,564		6	*
Simple Two Speed Contactor DC Motor Controller		205,911		21	*
Stepper Motor Controller		746,677		120	*
Time Delay Relay		556,325		88
Time Delay Relay II	jawaharlal@excite.com	247,729		39	*
Touch Switch		290,430		51	*
Video Activated Relay		122,442		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	181,972		10	*
Water Detector With Sump/Bilge Pump Controller		153,483		18	*
Wire Loop Alarm	Alex Meaden	206,404		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		316,763		25	*
12VDC To 120VAC Inverter		1,531,257		691
6V to 12V Converter		528,250		121
Automatic 12V Lead Acid Battery Charger		937,975		248
Automatic Load Sensing Power Switch		168,052		16	*
Car Battery Charger		883,957		159	*
Dual Polarity Power Supply		371,961		84	*
Fixed Voltage Power Supply		311,959		52	*
High Current Power Supply		339,750		66	*
High Voltage High Current Power Supply		264,747		35	*
LASER Power Supply		296,913		28
Portable CD Player Adapter For Car		213,115		12	*
Power Supply		739,286		259	*
Solid State Tesla Coil NEW!		147,139		4
Solid State Tesla Coil/High Voltage Generator		445,164		51
Transformerless Power Supply		463,857		117	*
Voltage Inverter		339,750		51	*
Voltage Inverter II		203,862		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		586,172		182
3 Watt FM Transmitter	Rae XL Tkacik	336,124		83	*
50 Watt Amplifier		508,570		74
8 Note Tune Player		141,398		12	*
8 Watt Audio Amp		373,644		67	*
Aircraft Radio Communications Receiver		279,289		49	*
Crystal Radio		159,664		53	*
Digital Volume Control		339,271		47	*
Electronic Stethoscope		322,005		142	*
FET Audio Mixer		344,373		41
FM Transmitter		1,009,125		420
Guitar Fuzz Effect		248,417		54	*
Microphone Mixer	Anatoly I. Shikhatov	251,387		26	*
Mono To Stereo Synthesizer	oRbEq	134,580		18	*
One Tube Regenerative Radio NEW!		143,094		4	*
Op Amp Radio		389,662		80	*
Single Chip AM Radio NEW!		100,554		3	*
Single Chip FM Radio NEW!		173,393		1	*
Sound Level Meter		342,785		51	*
Stereo Tube Amplifier	Weslee Kinsler	269,092		15	*
Tone Control		310,540		31
Transistor Organ		200,472		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		164,343		27	*
FM Telephone Bug		236,160		57
Phone Busy Indicator		214,712		24	*
Remote Telephone Ringer		119,039		3	*
Ringing Phone Light Flasher		219,057		35	*
Simple Phone Tap	Derek Tombrello	384,393		98	*
Telephone Hold Button		129,848		10
Telephone Recorder		217,386		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.