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, May 04, 2024	Solid State Tesla Coil/High Voltage Generator	12
	Tone Control	11
Yesterday Friday, May 03, 2024	12VDC To 120VAC Inverter	39
	FM Transmitter	22
Of All Time	12VDC To 120VAC Inverter	1,531,980
	FM Transmitter	1,009,594

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		227,714		61	*
Car Alarm Arming Horn Beep Canceller	bob	137,289		6	*
Wireless Auto Tachometer		343,857		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	160,578		29	*
Parallel (Printer) Port Interface		286,703		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		448,511		63	*
3 Channel Spectrum Analyzer		222,603		20
40W Fluorescent Lamp Inverter	Bart Milnes	330,963		60	*
Adjustable Strobe Light		309,865		36
Black Light		281,619		29
Colour (Sound) Organ		291,535		36
Electronic Dice NEW!		190,024		10	*
Fantastic Atom Expander		203,763		25
Flash Slave Trigger		222,030		18	*
Infa-Red Remote Control		638,083		216	*
IR Remote Extender NEW!		133,522		3	*
IR Remote Jammer	Carl	267,015		110	*
IR Remote Switch NEW!		158,463		9	*
LASER Transmitter/Receiver		417,441		92
LED Chaser		446,881		83	*
LED Metronome NEW!		100,254		3	*
LED Thermometer		207,550		22	*
Light/Dark Detector		306,950		90	*
Simple Colour Organ		138,277		11	*
Strobe Light		276,663		27	*
TRIAC Light Dimmer		553,783		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		360,246		122	*
Electromagnetic Levitator NEW!		145,211		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		923,248		214	*
AC Motor Speed Controller		392,405		29	*
Air Flow Detector		252,632		54	*
Digital Keypad Combination Lock		203,129		20
Low Voltage Alarm		230,106		58	*
Pine Racecar Victory Judge		103,492		1	*
Pulse Width Modulation DC Motor Control		655,900		94
Rain Detector		305,568		112	*
Simple Lie Detector		565,557		323
Simple Polarity Tester	Dudley LeRoux	166,274		13	*
Simple Servo Controller		222,331		22	*
Simple Touch Switch NEW!		170,764		6	*
Simple Two Speed Contactor DC Motor Controller		206,091		21	*
Stepper Motor Controller		747,114		120	*
Time Delay Relay		556,564		88
Time Delay Relay II	jawaharlal@excite.com	247,958		39	*
Touch Switch		290,624		51	*
Video Activated Relay		122,618		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	182,185		10	*
Water Detector With Sump/Bilge Pump Controller		153,673		18	*
Wire Loop Alarm	Alex Meaden	206,563		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		317,089		25	*
12VDC To 120VAC Inverter		1,531,980		691
6V to 12V Converter		528,587		121
Automatic 12V Lead Acid Battery Charger		938,284		248
Automatic Load Sensing Power Switch		168,296		16	*
Car Battery Charger		884,237		159	*
Dual Polarity Power Supply		372,184		84	*
Fixed Voltage Power Supply		312,168		52	*
High Current Power Supply		340,055		66	*
High Voltage High Current Power Supply		264,948		35	*
LASER Power Supply		297,159		28
Portable CD Player Adapter For Car		213,290		12	*
Power Supply		740,072		259	*
Solid State Tesla Coil NEW!		147,359		4
Solid State Tesla Coil/High Voltage Generator		445,485		51
Transformerless Power Supply		464,114		117	*
Voltage Inverter		340,151		51	*
Voltage Inverter II		204,123		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		586,426		182
3 Watt FM Transmitter	Rae XL Tkacik	336,383		83	*
50 Watt Amplifier		508,865		74
8 Note Tune Player		141,564		12	*
8 Watt Audio Amp		374,054		67	*
Aircraft Radio Communications Receiver		279,584		49	*
Crystal Radio		159,865		53	*
Digital Volume Control		339,494		47	*
Electronic Stethoscope		322,259		142	*
FET Audio Mixer		344,586		41
FM Transmitter		1,009,594		420
Guitar Fuzz Effect		248,652		54	*
Microphone Mixer	Anatoly I. Shikhatov	251,577		26	*
Mono To Stereo Synthesizer	oRbEq	134,786		18	*
One Tube Regenerative Radio NEW!		143,473		4	*
Op Amp Radio		390,016		80	*
Single Chip AM Radio NEW!		100,745		3	*
Single Chip FM Radio NEW!		173,648		1	*
Sound Level Meter		343,007		51	*
Stereo Tube Amplifier	Weslee Kinsler	269,316		15	*
Tone Control		310,766		31
Transistor Organ		200,698		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		164,482		27	*
FM Telephone Bug		236,291		57
Phone Busy Indicator		214,872		24	*
Remote Telephone Ringer		119,177		3	*
Ringing Phone Light Flasher		219,397		35	*
Simple Phone Tap	Derek Tombrello	384,543		98	*
Telephone Hold Button		130,015		10
Telephone Recorder		217,543		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.