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	One Tube Regenerative Radio	23
	12VDC To 120VAC Inverter	23
Yesterday Friday, May 17, 2024	12VDC To 120VAC Inverter	39
	One Tube Regenerative Radio	26
Of All Time	12VDC To 120VAC Inverter	1,532,491
	FM Transmitter	1,009,912

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		227,806		61	*
Car Alarm Arming Horn Beep Canceller	bob	137,353		6	*
Wireless Auto Tachometer		343,964		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	160,665		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		222,719		20
40W Fluorescent Lamp Inverter	Bart Milnes	331,069		60	*
Adjustable Strobe Light		309,974		36
Black Light		281,819		29
Colour (Sound) Organ		291,666		36
Electronic Dice NEW!		190,153		10	*
Fantastic Atom Expander		203,852		25
Flash Slave Trigger		222,134		18	*
Infa-Red Remote Control		638,235		216	*
IR Remote Extender NEW!		133,640		3	*
IR Remote Jammer	Carl	267,223		110	*
IR Remote Switch NEW!		158,563		9	*
LASER Transmitter/Receiver		417,686		92
LED Chaser		447,064		83	*
LED Metronome NEW!		100,387		3	*
LED Thermometer		207,650		22	*
Light/Dark Detector		307,041		90	*
Simple Colour Organ		138,335		11	*
Strobe Light		276,755		27	*
TRIAC Light Dimmer		553,970		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		360,371		122	*
Electromagnetic Levitator NEW!		145,296		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		923,485		214	*
AC Motor Speed Controller		392,636		29	*
Air Flow Detector		252,738		54	*
Digital Keypad Combination Lock		203,225		20
Low Voltage Alarm		230,212		58	*
Pine Racecar Victory Judge		103,589		1	*
Pulse Width Modulation DC Motor Control		656,075		94
Rain Detector		305,717		112	*
Simple Lie Detector		565,688		323
Simple Polarity Tester	Dudley LeRoux	166,381		13	*
Simple Servo Controller		222,422		22	*
Simple Touch Switch NEW!		170,882		6	*
Simple Two Speed Contactor DC Motor Controller		206,196		21	*
Stepper Motor Controller		747,390		120	*
Time Delay Relay		556,721		88
Time Delay Relay II	jawaharlal@excite.com	248,114		39	*
Touch Switch		290,766		51	*
Video Activated Relay		122,742		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	182,326		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!		317,300		25	*
12VDC To 120VAC Inverter		1,532,491		691
6V to 12V Converter		528,769		121
Automatic 12V Lead Acid Battery Charger		938,448		248
Automatic Load Sensing Power Switch		168,434		16	*
Car Battery Charger		884,377		159	*
Dual Polarity Power Supply		372,324		84	*
Fixed Voltage Power Supply		312,300		52	*
High Current Power Supply		340,259		66	*
High Voltage High Current Power Supply		265,105		35	*
LASER Power Supply		297,314		28
Portable CD Player Adapter For Car		213,382		12	*
Power Supply		740,214		259	*
Solid State Tesla Coil NEW!		147,518		4
Solid State Tesla Coil/High Voltage Generator		445,676		51
Transformerless Power Supply		464,280		117	*
Voltage Inverter		340,392		51	*
Voltage Inverter II		204,274		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		586,577		182
3 Watt FM Transmitter	Rae XL Tkacik	336,592		83	*
50 Watt Amplifier		509,062		74
8 Note Tune Player		141,655		12	*
8 Watt Audio Amp		374,346		67	*
Aircraft Radio Communications Receiver		279,771		49	*
Crystal Radio		160,014		53	*
Digital Volume Control		339,626		47	*
Electronic Stethoscope		322,411		142	*
FET Audio Mixer		344,737		41
FM Transmitter		1,009,912		420
Guitar Fuzz Effect		248,803		54	*
Microphone Mixer	Anatoly I. Shikhatov	251,698		26	*
Mono To Stereo Synthesizer	oRbEq	134,918		18	*
One Tube Regenerative Radio NEW!		143,776		4	*
Op Amp Radio		390,274		80	*
Single Chip AM Radio NEW!		100,853		3	*
Single Chip FM Radio NEW!		173,793		1	*
Sound Level Meter		343,153		51	*
Stereo Tube Amplifier	Weslee Kinsler	269,469		15	*
Tone Control		310,900		31
Transistor Organ		200,835		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		164,568		27	*
FM Telephone Bug		236,375		57
Phone Busy Indicator		214,977		24	*
Remote Telephone Ringer		119,265		3	*
Ringing Phone Light Flasher		219,565		35	*
Simple Phone Tap	Derek Tombrello	384,639		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.