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, November 29, 2021	Voltage Inverter	19
	7 Segment LED Counter	17
Yesterday Sunday, November 28, 2021	12VDC To 120VAC Inverter	31
	FM Transmitter	29
Of All Time	12VDC To 120VAC Inverter	1,494,237
	FM Transmitter	986,672

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		219,070		61	*
Car Alarm Arming Horn Beep Canceller	bob	129,579		6	*
Wireless Auto Tachometer		333,612		58

Computer

Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computer Controlled Frequency Counter/Logic Probe	Richard van Wyk	153,316		29	*
Parallel (Printer) Port Interface		274,784		71

Light/Laser

Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		436,547		63	*
3 Channel Spectrum Analyzer		212,048		20
40W Fluorescent Lamp Inverter	Bart Milnes	321,552		60	*
Adjustable Strobe Light		298,619		36
Black Light		265,769		29
Colour (Sound) Organ		280,488		36
Electronic Dice NEW!		180,750		10	*
Fantastic Atom Expander		194,842		25
Flash Slave Trigger		211,813		18	*
Infa-Red Remote Control		623,426		216	*
IR Remote Extender NEW!		123,708		2	*
IR Remote Jammer	Carl	254,517		110	*
IR Remote Switch NEW!		150,523		9	*
LASER Transmitter/Receiver		401,852		92
LED Chaser		434,976		83	*
LED Metronome NEW!		93,427		3	*
LED Thermometer		199,537		22	*
Light/Dark Detector		298,633		90	*
Simple Colour Organ		131,035		10	*
Strobe Light		266,688		27	*
TRIAC Light Dimmer		540,688		55

Major Projects

Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		350,334		122	*
Electromagnetic Levitator NEW!		136,772		15	*

Other

Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		909,642		214	*
AC Motor Speed Controller		376,614		29	*
Air Flow Detector		243,948		54	*
Digital Keypad Combination Lock		189,258		20
Low Voltage Alarm		220,007		58	*
Pine Racecar Victory Judge		96,728		1	*
Pulse Width Modulation DC Motor Control		638,542		94
Rain Detector		296,764		112	*
Simple Lie Detector		551,214		323
Simple Polarity Tester	Dudley LeRoux	157,609		13	*
Simple Servo Controller		213,033		22	*
Simple Touch Switch NEW!		161,845		5	*
Simple Two Speed Contactor DC Motor Controller		197,205		21	*
Stepper Motor Controller		731,098		120	*
Time Delay Relay		546,557		88
Time Delay Relay II	jawaharlal@excite.com	236,584		39	*
Touch Switch		281,315		51	*
Video Activated Relay		114,904		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	171,973		10	*
Water Detector With Sump/Bilge Pump Controller		145,297		18	*
Wire Loop Alarm	Alex Meaden	198,423		27	*

Power Supply

Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		303,414		25	*
12VDC To 120VAC Inverter		1,494,237		689
6V to 12V Converter		513,859		121
Automatic 12V Lead Acid Battery Charger		921,272		248
Automatic Load Sensing Power Switch		158,896		16	*
Car Battery Charger		869,906		159	*
Dual Polarity Power Supply		361,442		84	*
Fixed Voltage Power Supply		301,673		52	*
High Current Power Supply		326,722		66	*
High Voltage High Current Power Supply		244,367		35	*
LASER Power Supply		285,728		28
Portable CD Player Adapter For Car		203,733		12	*
Power Supply		726,245		259	*
Solid State Tesla Coil NEW!		137,022		4
Solid State Tesla Coil/High Voltage Generator		430,449		50
Transformerless Power Supply		453,161		117	*
Voltage Inverter		326,937		51	*
Voltage Inverter II		193,191		19	*

Sound/Radio

Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		575,444		182
3 Watt FM Transmitter	Rae XL Tkacik	323,758		83	*
50 Watt Amplifier		496,821		74
8 Note Tune Player		134,087		12	*
8 Watt Audio Amp		361,487		67	*
Aircraft Radio Communications Receiver		266,696		49	*
Crystal Radio		152,290		53	*
Digital Volume Control		323,460		47	*
Electronic Stethoscope		304,002		142	*
FET Audio Mixer		333,440		41
FM Transmitter		986,672		420
Guitar Fuzz Effect		236,514		54	*
Microphone Mixer	Anatoly I. Shikhatov	241,754		26	*
Mono To Stereo Synthesizer	oRbEq	124,835		18	*
One Tube Regenerative Radio NEW!		126,962		4	*
Op Amp Radio		375,436		80	*
Single Chip AM Radio NEW!		93,068		2	*
Single Chip FM Radio NEW!		162,578		1	*
Sound Level Meter		332,158		51	*
Stereo Tube Amplifier	Weslee Kinsler	259,298		15	*
Tone Control		299,524		31
Transistor Organ		190,051		28

Telephone

Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		156,858		27	*
FM Telephone Bug		228,940		57
Phone Busy Indicator		206,972		24	*
Remote Telephone Ringer		111,987		3	*
Ringing Phone Light Flasher		207,259		35	*
Simple Phone Tap	Derek Tombrello	376,276		98	*
Telephone Hold Button		121,919		10
Telephone Recorder		209,329		54	*

Back To Electronics Page | Mail Me | Search

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.