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 Thursday, April 25, 2024	Stepper Motor Controller	30
	12VDC To 120VAC Inverter	30
Yesterday Wednesday, April 24, 2024	12VDC To 120VAC Inverter	52
	FM Transmitter	33
Of All Time	12VDC To 120VAC Inverter	1,531,677
	FM Transmitter	1,009,386

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		227,639		61	*
Car Alarm Arming Horn Beep Canceller	bob	137,217		6	*
Wireless Auto Tachometer		343,763		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	160,514		29	*
Parallel (Printer) Port Interface		286,599		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		448,414		63	*
3 Channel Spectrum Analyzer		222,510		20
40W Fluorescent Lamp Inverter	Bart Milnes	330,885		60	*
Adjustable Strobe Light		309,779		36
Black Light		281,486		29
Colour (Sound) Organ		291,443		36
Electronic Dice NEW!		189,935		10	*
Fantastic Atom Expander		203,686		25
Flash Slave Trigger		221,947		18	*
Infa-Red Remote Control		637,988		216	*
IR Remote Extender NEW!		133,451		3	*
IR Remote Jammer	Carl	266,933		110	*
IR Remote Switch NEW!		158,384		9	*
LASER Transmitter/Receiver		417,303		92
LED Chaser		446,791		83	*
LED Metronome NEW!		100,160		3	*
LED Thermometer		207,490		22	*
Light/Dark Detector		306,885		90	*
Simple Colour Organ		138,219		11	*
Strobe Light		276,601		27	*
TRIAC Light Dimmer		553,637		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		360,143		122	*
Electromagnetic Levitator NEW!		145,147		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		923,110		214	*
AC Motor Speed Controller		392,274		29	*
Air Flow Detector		252,549		54	*
Digital Keypad Combination Lock		203,056		20
Low Voltage Alarm		230,020		58	*
Pine Racecar Victory Judge		103,421		1	*
Pulse Width Modulation DC Motor Control		655,754		94
Rain Detector		305,472		112	*
Simple Lie Detector		565,455		323
Simple Polarity Tester	Dudley LeRoux	166,203		13	*
Simple Servo Controller		222,249		22	*
Simple Touch Switch NEW!		170,681		6	*
Simple Two Speed Contactor DC Motor Controller		206,013		21	*
Stepper Motor Controller		746,931		120	*
Time Delay Relay		556,454		88
Time Delay Relay II	jawaharlal@excite.com	247,846		39	*
Touch Switch		290,545		51	*
Video Activated Relay		122,552		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	182,097		10	*
Water Detector With Sump/Bilge Pump Controller		153,589		18	*
Wire Loop Alarm	Alex Meaden	206,490		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		316,941		25	*
12VDC To 120VAC Inverter		1,531,677		691
6V to 12V Converter		528,448		121
Automatic 12V Lead Acid Battery Charger		938,153		248
Automatic Load Sensing Power Switch		168,198		16	*
Car Battery Charger		884,110		159	*
Dual Polarity Power Supply		372,081		84	*
Fixed Voltage Power Supply		312,077		52	*
High Current Power Supply		339,924		66	*
High Voltage High Current Power Supply		264,865		35	*
LASER Power Supply		297,057		28
Portable CD Player Adapter For Car		213,217		12	*
Power Supply		739,441		259	*
Solid State Tesla Coil NEW!		147,275		4
Solid State Tesla Coil/High Voltage Generator		445,353		51
Transformerless Power Supply		463,992		117	*
Voltage Inverter		339,987		51	*
Voltage Inverter II		203,997		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		586,314		182
3 Watt FM Transmitter	Rae XL Tkacik	336,267		83	*
50 Watt Amplifier		508,730		74
8 Note Tune Player		141,490		12	*
8 Watt Audio Amp		373,883		67	*
Aircraft Radio Communications Receiver		279,462		49	*
Crystal Radio		159,765		53	*
Digital Volume Control		339,401		47	*
Electronic Stethoscope		322,151		142	*
FET Audio Mixer		344,495		41
FM Transmitter		1,009,386		420
Guitar Fuzz Effect		248,536		54	*
Microphone Mixer	Anatoly I. Shikhatov	251,494		26	*
Mono To Stereo Synthesizer	oRbEq	134,693		18	*
One Tube Regenerative Radio NEW!		143,322		4	*
Op Amp Radio		389,866		80	*
Single Chip AM Radio NEW!		100,651		3	*
Single Chip FM Radio NEW!		173,557		1	*
Sound Level Meter		342,905		51	*
Stereo Tube Amplifier	Weslee Kinsler	269,231		15	*
Tone Control		310,662		31
Transistor Organ		200,595		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		164,420		27	*
FM Telephone Bug		236,234		57
Phone Busy Indicator		214,789		24	*
Remote Telephone Ringer		119,118		3	*
Ringing Phone Light Flasher		219,307		35	*
Simple Phone Tap	Derek Tombrello	384,468		98	*
Telephone Hold Button		129,929		10
Telephone Recorder		217,471		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.