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 Sunday, April 28, 2024	12VDC To 120VAC Inverter	14
	Voltage Inverter	14
Yesterday Saturday, April 27, 2024	12VDC To 120VAC Inverter	45
	8 Watt Audio Amp	30
Of All Time	12VDC To 120VAC Inverter	1,531,779
	FM Transmitter	1,009,445

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		227,661		61	*
Car Alarm Arming Horn Beep Canceller	bob	137,240		6	*
Wireless Auto Tachometer		343,793		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	160,533		29	*
Parallel (Printer) Port Interface		286,636		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		448,449		63	*
3 Channel Spectrum Analyzer		222,538		20
40W Fluorescent Lamp Inverter	Bart Milnes	330,914		60	*
Adjustable Strobe Light		309,804		36
Black Light		281,540		29
Colour (Sound) Organ		291,475		36
Electronic Dice NEW!		189,968		10	*
Fantastic Atom Expander		203,719		25
Flash Slave Trigger		221,974		18	*
Infa-Red Remote Control		638,026		216	*
IR Remote Extender NEW!		133,469		3	*
IR Remote Jammer	Carl	266,961		110	*
IR Remote Switch NEW!		158,411		9	*
LASER Transmitter/Receiver		417,338		92
LED Chaser		446,824		83	*
LED Metronome NEW!		100,187		3	*
LED Thermometer		207,515		22	*
Light/Dark Detector		306,908		90	*
Simple Colour Organ		138,239		11	*
Strobe Light		276,624		27	*
TRIAC Light Dimmer		553,688		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		360,183		122	*
Electromagnetic Levitator NEW!		145,168		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		923,165		214	*
AC Motor Speed Controller		392,311		29	*
Air Flow Detector		252,577		54	*
Digital Keypad Combination Lock		203,077		20
Low Voltage Alarm		230,052		58	*
Pine Racecar Victory Judge		103,443		1	*
Pulse Width Modulation DC Motor Control		655,806		94
Rain Detector		305,492		112	*
Simple Lie Detector		565,490		323
Simple Polarity Tester	Dudley LeRoux	166,223		13	*
Simple Servo Controller		222,281		22	*
Simple Touch Switch NEW!		170,704		6	*
Simple Two Speed Contactor DC Motor Controller		206,043		21	*
Stepper Motor Controller		746,994		120	*
Time Delay Relay		556,487		88
Time Delay Relay II	jawaharlal@excite.com	247,890		39	*
Touch Switch		290,570		51	*
Video Activated Relay		122,575		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	182,122		10	*
Water Detector With Sump/Bilge Pump Controller		153,613		18	*
Wire Loop Alarm	Alex Meaden	206,515		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		316,996		25	*
12VDC To 120VAC Inverter		1,531,779		691
6V to 12V Converter		528,490		121
Automatic 12V Lead Acid Battery Charger		938,196		248
Automatic Load Sensing Power Switch		168,229		16	*
Car Battery Charger		884,162		159	*
Dual Polarity Power Supply		372,118		84	*
Fixed Voltage Power Supply		312,109		52	*
High Current Power Supply		339,966		66	*
High Voltage High Current Power Supply		264,897		35	*
LASER Power Supply		297,097		28
Portable CD Player Adapter For Car		213,245		12	*
Power Supply		739,482		259	*
Solid State Tesla Coil NEW!		147,298		4
Solid State Tesla Coil/High Voltage Generator		445,398		51
Transformerless Power Supply		464,033		117	*
Voltage Inverter		340,049		51	*
Voltage Inverter II		204,041		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		586,351		182
3 Watt FM Transmitter	Rae XL Tkacik	336,299		83	*
50 Watt Amplifier		508,779		74
8 Note Tune Player		141,518		12	*
8 Watt Audio Amp		373,947		67	*
Aircraft Radio Communications Receiver		279,501		49	*
Crystal Radio		159,803		53	*
Digital Volume Control		339,430		47	*
Electronic Stethoscope		322,193		142	*
FET Audio Mixer		344,523		41
FM Transmitter		1,009,445		420
Guitar Fuzz Effect		248,577		54	*
Microphone Mixer	Anatoly I. Shikhatov	251,520		26	*
Mono To Stereo Synthesizer	oRbEq	134,712		18	*
One Tube Regenerative Radio NEW!		143,371		4	*
Op Amp Radio		389,918		80	*
Single Chip AM Radio NEW!		100,675		3	*
Single Chip FM Radio NEW!		173,598		1	*
Sound Level Meter		342,933		51	*
Stereo Tube Amplifier	Weslee Kinsler	269,254		15	*
Tone Control		310,699		31
Transistor Organ		200,631		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		164,450		27	*
FM Telephone Bug		236,253		57
Phone Busy Indicator		214,819		24	*
Remote Telephone Ringer		119,137		3	*
Ringing Phone Light Flasher		219,339		35	*
Simple Phone Tap	Derek Tombrello	384,494		98	*
Telephone Hold Button		129,954		10
Telephone Recorder		217,494		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.