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 28, 2022	Automatic 12V Lead Acid Battery Charger	254
	12VDC To 120VAC Inverter	228
Yesterday Sunday, November 27, 2022	Digital Volume Control	172
	Car Battery Charger	43
Of All Time	12VDC To 120VAC Inverter	1,508,471
	FM Transmitter	996,433

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		223,288		61	*
Car Alarm Arming Horn Beep Canceller	bob	133,212		6	*
Wireless Auto Tachometer		338,482		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	156,783		29	*
Parallel (Printer) Port Interface		280,362		71

Light/Laser

Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		442,282		63	*
3 Channel Spectrum Analyzer		216,862		20
40W Fluorescent Lamp Inverter	Bart Milnes	326,032		60	*
Adjustable Strobe Light		304,013		36
Black Light		273,163		29
Colour (Sound) Organ		285,575		36
Electronic Dice NEW!		184,914		10	*
Fantastic Atom Expander		199,475		25
Flash Slave Trigger		216,473		18	*
Infa-Red Remote Control		629,065		216	*
IR Remote Extender NEW!		128,156		2	*
IR Remote Jammer	Carl	260,735		110	*
IR Remote Switch NEW!		154,076		9	*
LASER Transmitter/Receiver		408,864		92
LED Chaser		440,187		83	*
LED Metronome NEW!		96,341		3	*
LED Thermometer		203,270		22	*
Light/Dark Detector		302,599		90	*
Simple Colour Organ		134,424		11	*
Strobe Light		271,591		27	*
TRIAC Light Dimmer		546,072		55

Major Projects

Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		354,863		122	*
Electromagnetic Levitator NEW!		140,575		15	*

Other

Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		916,076		214	*
AC Motor Speed Controller		383,419		29	*
Air Flow Detector		248,036		54	*
Digital Keypad Combination Lock		193,228		20
Low Voltage Alarm		225,514		58	*
Pine Racecar Victory Judge		99,994		1	*
Pulse Width Modulation DC Motor Control		643,566		94
Rain Detector		300,896		112	*
Simple Lie Detector		555,936		323
Simple Polarity Tester	Dudley LeRoux	161,617		13	*
Simple Servo Controller		217,412		22	*
Simple Touch Switch NEW!		165,968		5	*
Simple Two Speed Contactor DC Motor Controller		201,148		21	*
Stepper Motor Controller		738,657		120	*
Time Delay Relay		550,932		88
Time Delay Relay II	jawaharlal@excite.com	241,726		39	*
Touch Switch		285,641		51	*
Video Activated Relay		118,493		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	176,271		10	*
Water Detector With Sump/Bilge Pump Controller		149,284		18	*
Wire Loop Alarm	Alex Meaden	202,325		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!		308,573		25	*
12VDC To 120VAC Inverter		1,508,471		691
6V to 12V Converter		520,572		121
Automatic 12V Lead Acid Battery Charger		930,115		248
Automatic Load Sensing Power Switch		163,325		16	*
Car Battery Charger		876,645		159	*
Dual Polarity Power Supply		366,347		84	*
Fixed Voltage Power Supply		306,574		52	*
High Current Power Supply		332,344		66	*
High Voltage High Current Power Supply		248,549		35	*
LASER Power Supply		290,929		28
Portable CD Player Adapter For Car		208,276		12	*
Power Supply		731,810		259	*
Solid State Tesla Coil NEW!		141,450		4
Solid State Tesla Coil/High Voltage Generator		437,313		51
Transformerless Power Supply		458,225		117	*
Voltage Inverter		332,661		51	*
Voltage Inverter II		197,832		19	*

Sound/Radio

Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		580,395		182
3 Watt FM Transmitter	Rae XL Tkacik	328,970		83	*
50 Watt Amplifier		502,017		74
8 Note Tune Player		137,516		12	*
8 Watt Audio Amp		366,830		67	*
Aircraft Radio Communications Receiver		272,383		49	*
Crystal Radio		155,116		53	*
Digital Volume Control		330,817		47	*
Electronic Stethoscope		309,539		142	*
FET Audio Mixer		338,479		41
FM Transmitter		996,433		420
Guitar Fuzz Effect		241,879		54	*
Microphone Mixer	Anatoly I. Shikhatov	246,160		26	*
Mono To Stereo Synthesizer	oRbEq	129,362		18	*
One Tube Regenerative Radio NEW!		133,219		4	*
Op Amp Radio		381,497		80	*
Single Chip AM Radio NEW!		96,238		2	*
Single Chip FM Radio NEW!		167,035		1	*
Sound Level Meter		337,050		51	*
Stereo Tube Amplifier	Weslee Kinsler	263,709		15	*
Tone Control		305,099		31
Transistor Organ		194,617		28

Telephone

Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		160,576		27	*
FM Telephone Bug		232,517		57
Phone Busy Indicator		210,886		24	*
Remote Telephone Ringer		115,432		3	*
Ringing Phone Light Flasher		212,416		35	*
Simple Phone Tap	Derek Tombrello	380,150		98	*
Telephone Hold Button		125,800		10
Telephone Recorder		213,209		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.