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, February 16, 2019	22 Watt Audio Amplifier	17
	Stepper Motor Controller	11
Yesterday Friday, February 15, 2019	Black Light	75
	LASER Power Supply	65
Of All Time	12VDC To 120VAC Inverter	1,428,745
	FM Transmitter	945,683

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		195,837		61	*
Car Alarm Arming Horn Beep Canceller	bob	107,152		6	*
Wireless Auto Tachometer		303,857		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	136,363		29	*
Parallel (Printer) Port Interface		243,023		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		400,138		63	*
3 Channel Spectrum Analyzer		191,254		20
40W Fluorescent Lamp Inverter	Bart Milnes	295,763		60	*
Adjustable Strobe Light		270,660		36
Black Light		232,213		29
Colour (Sound) Organ		253,523		36
Electronic Dice NEW!		156,153		10	*
Fantastic Atom Expander		168,027		25
Flash Slave Trigger		187,202		18	*
Infa-Red Remote Control		590,138		216	*
IR Remote Extender NEW!		97,006		2	*
IR Remote Jammer	Carl	230,861		110	*
IR Remote Switch NEW!		127,026		9	*
LASER Transmitter/Receiver		370,573		92
LED Chaser		413,168		83	*
LED Metronome NEW!		83,382		3	*
LED Thermometer		180,890		22	*
Light/Dark Detector		279,019		90	*
Simple Colour Organ		115,453		10	*
Strobe Light		248,075		27	*
TRIAC Light Dimmer		461,430		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		318,440		122	*
Electromagnetic Levitator NEW!		118,078		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		869,078		214	*
AC Motor Speed Controller		347,946		29	*
Air Flow Detector		225,144		54	*
Digital Keypad Combination Lock		169,098		20
Low Voltage Alarm		199,099		58	*
Pine Racecar Victory Judge		79,724		1	*
Pulse Width Modulation DC Motor Control		615,673		93
Rain Detector		278,669		112	*
Simple Lie Detector		525,820		323
Simple Polarity Tester	Dudley LeRoux	133,545		13	*
Simple Servo Controller		190,439		22	*
Simple Touch Switch NEW!		144,349		5	*
Simple Two Speed Contactor DC Motor Controller		178,941		21	*
Stepper Motor Controller		698,931		120	*
Time Delay Relay		520,120		88
Time Delay Relay II	jawaharlal@excite.com	210,930		39	*
Touch Switch		261,718		51	*
Video Activated Relay		98,914		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	151,531		10	*
Water Detector With Sump/Bilge Pump Controller		124,464		18	*
Wire Loop Alarm	Alex Meaden	181,266		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		276,251		25	*
12VDC To 120VAC Inverter		1,428,745		688
6V to 12V Converter		458,867		121
Automatic 12V Lead Acid Battery Charger		882,599		246
Automatic Load Sensing Power Switch		137,723		16	*
Car Battery Charger		835,927		159	*
Dual Polarity Power Supply		343,455		84	*
Fixed Voltage Power Supply		281,891		52	*
High Current Power Supply		300,494		65	*
High Voltage High Current Power Supply		225,402		35	*
LASER Power Supply		259,457		28
Portable CD Player Adapter For Car		183,578		12	*
Power Supply		695,892		259	*
Solid State Tesla Coil NEW!		122,237		4
Solid State Tesla Coil/High Voltage Generator		396,470		50
Transformerless Power Supply		423,922		117	*
Voltage Inverter		307,439		51	*
Voltage Inverter II		176,113		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		551,343		182
3 Watt FM Transmitter	Rae XL Tkacik	300,626		82	*
50 Watt Amplifier		470,318		74
8 Note Tune Player		118,188		12	*
8 Watt Audio Amp		334,823		67	*
Aircraft Radio Communications Receiver		238,521		49	*
Crystal Radio		139,592		53	*
Digital Volume Control		300,951		47	*
Electronic Stethoscope		278,629		141	*
FET Audio Mixer		310,174		41
FM Transmitter		945,683		419
Guitar Fuzz Effect		211,706		52	*
Microphone Mixer	Anatoly I. Shikhatov	219,266		26	*
Mono To Stereo Synthesizer	oRbEq	103,383		18	*
One Tube Regenerative Radio NEW!		108,700		4	*
Op Amp Radio		349,469		80	*
Single Chip AM Radio NEW!		82,508		2	*
Single Chip FM Radio NEW!		138,851		1	*
Sound Level Meter		309,377		51	*
Stereo Tube Amplifier	Weslee Kinsler	237,025		15	*
Tone Control		273,635		31
Transistor Organ		167,344		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		140,120		27	*
FM Telephone Bug		208,099		57
Phone Busy Indicator		188,465		24	*
Remote Telephone Ringer		95,850		3	*
Ringing Phone Light Flasher		185,587		34	*
Simple Phone Tap	Derek Tombrello	334,635		98	*
Telephone Hold Button		102,070		10
Telephone Recorder		186,633		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.