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, April 01, 2023	3 Watt FM Transmitter	87
	12VDC To 120VAC Inverter	11
Yesterday Friday, March 31, 2023	12VDC To 120VAC Inverter	64
	FM Transmitter	33
Of All Time	12VDC To 120VAC Inverter	1,512,948
	FM Transmitter	1,000,118

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		224,429		61	*
Car Alarm Arming Horn Beep Canceller	bob	134,267		6	*
Wireless Auto Tachometer		339,988		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	157,821		29	*
Parallel (Printer) Port Interface		281,990		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		444,079		63	*
3 Channel Spectrum Analyzer		218,296		20
40W Fluorescent Lamp Inverter	Bart Milnes	327,387		60	*
Adjustable Strobe Light		305,650		36
Black Light		275,477		29
Colour (Sound) Organ		287,230		36
Electronic Dice NEW!		186,166		10	*
Fantastic Atom Expander		200,632		25
Flash Slave Trigger		218,552		18	*
Infa-Red Remote Control		630,576		216	*
IR Remote Extender NEW!		129,523		2	*
IR Remote Jammer	Carl	262,213		110	*
IR Remote Switch NEW!		155,164		9	*
LASER Transmitter/Receiver		411,192		92
LED Chaser		442,451		83	*
LED Metronome NEW!		97,191		3	*
LED Thermometer		204,370		22	*
Light/Dark Detector		303,629		90	*
Simple Colour Organ		135,448		11	*
Strobe Light		272,730		27	*
TRIAC Light Dimmer		547,948		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		356,247		122	*
Electromagnetic Levitator NEW!		141,672		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		918,008		214	*
AC Motor Speed Controller		385,363		29	*
Air Flow Detector		249,247		54	*
Digital Keypad Combination Lock		194,287		20
Low Voltage Alarm		226,704		58	*
Pine Racecar Victory Judge		100,893		1	*
Pulse Width Modulation DC Motor Control		645,041		94
Rain Detector		302,041		112	*
Simple Lie Detector		560,482		323
Simple Polarity Tester	Dudley LeRoux	162,880		13	*
Simple Servo Controller		218,642		22	*
Simple Touch Switch NEW!		167,073		6	*
Simple Two Speed Contactor DC Motor Controller		202,255		21	*
Stepper Motor Controller		740,617		120	*
Time Delay Relay		552,299		88
Time Delay Relay II	jawaharlal@excite.com	243,413		39	*
Touch Switch		286,929		51	*
Video Activated Relay		119,587		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	177,672		10	*
Water Detector With Sump/Bilge Pump Controller		150,369		18	*
Wire Loop Alarm	Alex Meaden	203,432		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		310,284		25	*
12VDC To 120VAC Inverter		1,512,948		691
6V to 12V Converter		522,399		121
Automatic 12V Lead Acid Battery Charger		932,185		248
Automatic Load Sensing Power Switch		164,513		16	*
Car Battery Charger		879,050		159	*
Dual Polarity Power Supply		367,758		84	*
Fixed Voltage Power Supply		308,102		52	*
High Current Power Supply		334,019		66	*
High Voltage High Current Power Supply		249,939		35	*
LASER Power Supply		292,531		28
Portable CD Player Adapter For Car		209,587		12	*
Power Supply		733,516		259	*
Solid State Tesla Coil NEW!		142,682		4
Solid State Tesla Coil/High Voltage Generator		439,134		51
Transformerless Power Supply		459,690		117	*
Voltage Inverter		334,115		51	*
Voltage Inverter II		199,313		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		581,883		182
3 Watt FM Transmitter	Rae XL Tkacik	330,531		83	*
50 Watt Amplifier		503,772		74
8 Note Tune Player		138,555		12	*
8 Watt Audio Amp		368,448		67	*
Aircraft Radio Communications Receiver		273,970		49	*
Crystal Radio		156,343		53	*
Digital Volume Control		335,118		47	*
Electronic Stethoscope		311,610		142	*
FET Audio Mixer		340,050		41
FM Transmitter		1,000,118		420
Guitar Fuzz Effect		243,457		54	*
Microphone Mixer	Anatoly I. Shikhatov	247,493		26	*
Mono To Stereo Synthesizer	oRbEq	130,591		18	*
One Tube Regenerative Radio NEW!		135,149		4	*
Op Amp Radio		383,406		80	*
Single Chip AM Radio NEW!		97,206		3	*
Single Chip FM Radio NEW!		168,669		1	*
Sound Level Meter		338,615		51	*
Stereo Tube Amplifier	Weslee Kinsler	265,091		15	*
Tone Control		306,622		31
Transistor Organ		196,066		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		161,584		27	*
FM Telephone Bug		233,502		57
Phone Busy Indicator		211,983		24	*
Remote Telephone Ringer		116,372		3	*
Ringing Phone Light Flasher		213,882		35	*
Simple Phone Tap	Derek Tombrello	381,217		98	*
Telephone Hold Button		126,924		10
Telephone Recorder		214,313		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.