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 Monday, May 06, 2024	FM Transmitter	23
	Infa-Red Remote Control	18
Yesterday Sunday, May 05, 2024	12VDC To 120VAC Inverter	39
	Op Amp Radio	22
Of All Time	12VDC To 120VAC Inverter	1,532,048
	FM Transmitter	1,009,639

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		227,728		61	*
Car Alarm Arming Horn Beep Canceller	bob	137,297		6	*
Wireless Auto Tachometer		343,875		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	160,591		29	*
Parallel (Printer) Port Interface		286,723		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		448,533		63	*
3 Channel Spectrum Analyzer		222,624		20
40W Fluorescent Lamp Inverter	Bart Milnes	330,979		60	*
Adjustable Strobe Light		309,873		36
Black Light		281,650		29
Colour (Sound) Organ		291,548		36
Electronic Dice NEW!		190,038		10	*
Fantastic Atom Expander		203,774		25
Flash Slave Trigger		222,042		18	*
Infa-Red Remote Control		638,113		216	*
IR Remote Extender NEW!		133,544		3	*
IR Remote Jammer	Carl	267,034		110	*
IR Remote Switch NEW!		158,478		9	*
LASER Transmitter/Receiver		417,485		92
LED Chaser		446,897		83	*
LED Metronome NEW!		100,270		3	*
LED Thermometer		207,563		22	*
Light/Dark Detector		306,968		90	*
Simple Colour Organ		138,282		11	*
Strobe Light		276,680		27	*
TRIAC Light Dimmer		553,804		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		360,266		122	*
Electromagnetic Levitator NEW!		145,225		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		923,289		214	*
AC Motor Speed Controller		392,434		29	*
Air Flow Detector		252,648		54	*
Digital Keypad Combination Lock		203,141		20
Low Voltage Alarm		230,128		58	*
Pine Racecar Victory Judge		103,511		1	*
Pulse Width Modulation DC Motor Control		655,936		94
Rain Detector		305,601		112	*
Simple Lie Detector		565,581		323
Simple Polarity Tester	Dudley LeRoux	166,286		13	*
Simple Servo Controller		222,346		22	*
Simple Touch Switch NEW!		170,783		6	*
Simple Two Speed Contactor DC Motor Controller		206,107		21	*
Stepper Motor Controller		747,162		120	*
Time Delay Relay		556,587		88
Time Delay Relay II	jawaharlal@excite.com	247,979		39	*
Touch Switch		290,647		51	*
Video Activated Relay		122,635		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	182,211		10	*
Water Detector With Sump/Bilge Pump Controller		153,687		18	*
Wire Loop Alarm	Alex Meaden	206,580		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		317,122		25	*
12VDC To 120VAC Inverter		1,532,048		691
6V to 12V Converter		528,621		121
Automatic 12V Lead Acid Battery Charger		938,307		248
Automatic Load Sensing Power Switch		168,322		16	*
Car Battery Charger		884,260		159	*
Dual Polarity Power Supply		372,207		84	*
Fixed Voltage Power Supply		312,188		52	*
High Current Power Supply		340,085		66	*
High Voltage High Current Power Supply		264,967		35	*
LASER Power Supply		297,183		28
Portable CD Player Adapter For Car		213,308		12	*
Power Supply		740,097		259	*
Solid State Tesla Coil NEW!		147,386		4
Solid State Tesla Coil/High Voltage Generator		445,513		51
Transformerless Power Supply		464,134		117	*
Voltage Inverter		340,190		51	*
Voltage Inverter II		204,145		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		586,452		182
3 Watt FM Transmitter	Rae XL Tkacik	336,408		83	*
50 Watt Amplifier		508,889		74
8 Note Tune Player		141,576		12	*
8 Watt Audio Amp		374,092		67	*
Aircraft Radio Communications Receiver		279,614		49	*
Crystal Radio		159,885		53	*
Digital Volume Control		339,520		47	*
Electronic Stethoscope		322,280		142	*
FET Audio Mixer		344,605		41
FM Transmitter		1,009,639		420
Guitar Fuzz Effect		248,674		54	*
Microphone Mixer	Anatoly I. Shikhatov	251,598		26	*
Mono To Stereo Synthesizer	oRbEq	134,808		18	*
One Tube Regenerative Radio NEW!		143,521		4	*
Op Amp Radio		390,058		80	*
Single Chip AM Radio NEW!		100,762		3	*
Single Chip FM Radio NEW!		173,666		1	*
Sound Level Meter		343,022		51	*
Stereo Tube Amplifier	Weslee Kinsler	269,337		15	*
Tone Control		310,789		31
Transistor Organ		200,720		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		164,497		27	*
FM Telephone Bug		236,300		57
Phone Busy Indicator		214,888		24	*
Remote Telephone Ringer		119,187		3	*
Ringing Phone Light Flasher		219,423		35	*
Simple Phone Tap	Derek Tombrello	384,556		98	*
Telephone Hold Button		130,028		10
Telephone Recorder		217,559		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.