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 Wednesday, January 27, 2021	12VDC To 120VAC Inverter	63
	Transformerless Power Supply	62
Yesterday Tuesday, January 26, 2021	12VDC To 120VAC Inverter	70
	TRIAC Light Dimmer	43
Of All Time	12VDC To 120VAC Inverter	1,478,942
	FM Transmitter	975,587

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		214,035		61	*
Car Alarm Arming Horn Beep Canceller	bob	125,023		6	*
Wireless Auto Tachometer		327,769		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	149,582		29	*
Parallel (Printer) Port Interface		268,448		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		428,977		63	*
3 Channel Spectrum Analyzer		207,313		20
40W Fluorescent Lamp Inverter	Bart Milnes	316,318		60	*
Adjustable Strobe Light		292,624		36
Black Light		258,112		29
Colour (Sound) Organ		274,851		36
Electronic Dice NEW!		175,681		10	*
Fantastic Atom Expander		189,056		25
Flash Slave Trigger		206,457		18	*
Infa-Red Remote Control		617,288		216	*
IR Remote Extender NEW!		118,226		2	*
IR Remote Jammer	Carl	248,981		110	*
IR Remote Switch NEW!		145,869		9	*
LASER Transmitter/Receiver		394,555		92
LED Chaser		430,145		83	*
LED Metronome NEW!		91,115		3	*
LED Thermometer		195,678		22	*
Light/Dark Detector		294,287		90	*
Simple Colour Organ		127,653		10	*
Strobe Light		262,277		27	*
TRIAC Light Dimmer		536,073		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		344,852		122	*
Electromagnetic Levitator NEW!		132,692		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		901,291		214	*
AC Motor Speed Controller		370,408		29	*
Air Flow Detector		239,971		54	*
Digital Keypad Combination Lock		185,258		20
Low Voltage Alarm		214,990		58	*
Pine Racecar Victory Judge		93,399		1	*
Pulse Width Modulation DC Motor Control		633,555		94
Rain Detector		292,698		112	*
Simple Lie Detector		545,984		323
Simple Polarity Tester	Dudley LeRoux	152,658		13	*
Simple Servo Controller		208,311		22	*
Simple Touch Switch NEW!		157,868		5	*
Simple Two Speed Contactor DC Motor Controller		193,172		21	*
Stepper Motor Controller		724,162		120	*
Time Delay Relay		541,704		88
Time Delay Relay II	jawaharlal@excite.com	231,075		39	*
Touch Switch		277,098		51	*
Video Activated Relay		111,316		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	167,613		10	*
Water Detector With Sump/Bilge Pump Controller		140,563		18	*
Wire Loop Alarm	Alex Meaden	194,628		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		298,174		25	*
12VDC To 120VAC Inverter		1,478,942		689
6V to 12V Converter		506,967		121
Automatic 12V Lead Acid Battery Charger		913,715		248
Automatic Load Sensing Power Switch		153,743		16	*
Car Battery Charger		864,008		159	*
Dual Polarity Power Supply		357,483		84	*
Fixed Voltage Power Supply		296,953		52	*
High Current Power Supply		321,557		66	*
High Voltage High Current Power Supply		240,119		35	*
LASER Power Supply		280,383		28
Portable CD Player Adapter For Car		198,939		12	*
Power Supply		720,068		259	*
Solid State Tesla Coil NEW!		133,341		4
Solid State Tesla Coil/High Voltage Generator		423,019		50
Transformerless Power Supply		448,033		117	*
Voltage Inverter		320,869		51	*
Voltage Inverter II		189,208		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		570,182		182
3 Watt FM Transmitter	Rae XL Tkacik	318,435		83	*
50 Watt Amplifier		491,460		74
8 Note Tune Player		130,503		12	*
8 Watt Audio Amp		355,885		67	*
Aircraft Radio Communications Receiver		261,654		49	*
Crystal Radio		149,929		53	*
Digital Volume Control		318,535		47	*
Electronic Stethoscope		298,078		141	*
FET Audio Mixer		327,946		41
FM Transmitter		975,587		420
Guitar Fuzz Effect		231,100		52	*
Microphone Mixer	Anatoly I. Shikhatov	237,159		26	*
Mono To Stereo Synthesizer	oRbEq	120,103		18	*
One Tube Regenerative Radio NEW!		122,642		4	*
Op Amp Radio		369,534		80	*
Single Chip AM Radio NEW!		90,449		2	*
Single Chip FM Radio NEW!		157,672		1	*
Sound Level Meter		327,608		51	*
Stereo Tube Amplifier	Weslee Kinsler	254,662		15	*
Tone Control		293,651		31
Transistor Organ		184,723		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		153,067		27	*
FM Telephone Bug		225,236		57
Phone Busy Indicator		203,255		24	*
Remote Telephone Ringer		108,316		3	*
Ringing Phone Light Flasher		202,098		35	*
Simple Phone Tap	Derek Tombrello	372,272		98	*
Telephone Hold Button		118,028		10
Telephone Recorder		204,973		54	*

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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.