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 Friday, April 19, 2024	12VDC To 120VAC Inverter	8
	8 Watt Audio Amp	7
Yesterday Thursday, April 18, 2024	12VDC To 120VAC Inverter	51
	Stepper Motor Controller	31
Of All Time	12VDC To 120VAC Inverter	1,531,395
	FM Transmitter	1,009,194

Auto	Back to the top of this document

Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Automatic Headlight Brightness Switch		227,574		61	*
Car Alarm Arming Horn Beep Canceller	bob	137,163		6	*
Wireless Auto Tachometer		343,703		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	160,463		29	*
Parallel (Printer) Port Interface		286,491		71

Light/Laser

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12VDC Fluorescent Lamp Driver		448,340		63	*
3 Channel Spectrum Analyzer		222,418		20
40W Fluorescent Lamp Inverter	Bart Milnes	330,812		60	*
Adjustable Strobe Light		309,692		36
Black Light		281,377		29
Colour (Sound) Organ		291,357		36
Electronic Dice NEW!		189,846		10	*
Fantastic Atom Expander		203,611		25
Flash Slave Trigger		221,878		18	*
Infa-Red Remote Control		637,868		216	*
IR Remote Extender NEW!		133,375		3	*
IR Remote Jammer	Carl	266,839		110	*
IR Remote Switch NEW!		158,318		9	*
LASER Transmitter/Receiver		417,196		92
LED Chaser		446,704		83	*
LED Metronome NEW!		100,091		3	*
LED Thermometer		207,409		22	*
Light/Dark Detector		306,816		90	*
Simple Colour Organ		138,155		11	*
Strobe Light		276,525		27	*
TRIAC Light Dimmer		553,525		55

Major Projects

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Computerize Your Room/Home		360,061		122	*
Electromagnetic Levitator NEW!		145,086		15	*

Other

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
7 Segment LED Counter		923,013		214	*
AC Motor Speed Controller		392,139		29	*
Air Flow Detector		252,478		54	*
Digital Keypad Combination Lock		202,995		20
Low Voltage Alarm		229,934		58	*
Pine Racecar Victory Judge		103,352		1	*
Pulse Width Modulation DC Motor Control		655,632		94
Rain Detector		305,405		112	*
Simple Lie Detector		565,365		323
Simple Polarity Tester	Dudley LeRoux	166,131		13	*
Simple Servo Controller		222,161		22	*
Simple Touch Switch NEW!		170,600		6	*
Simple Two Speed Contactor DC Motor Controller		205,935		21	*
Stepper Motor Controller		746,750		120	*
Time Delay Relay		556,367		88
Time Delay Relay II	jawaharlal@excite.com	247,765		39	*
Touch Switch		290,472		51	*
Video Activated Relay		122,481		8	*
Video Stabilizer/MacroVision Removal	Antti Paarlahti	182,021		10	*
Water Detector With Sump/Bilge Pump Controller		153,517		18	*
Wire Loop Alarm	Alex Meaden	206,429		27	*

Power Supply

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
12V To 24V DC-DC Converter NEW!		316,808		25	*
12VDC To 120VAC Inverter		1,531,395		691
6V to 12V Converter		528,301		121
Automatic 12V Lead Acid Battery Charger		938,028		248
Automatic Load Sensing Power Switch		168,101		16	*
Car Battery Charger		883,995		159	*
Dual Polarity Power Supply		371,997		84	*
Fixed Voltage Power Supply		311,993		52	*
High Current Power Supply		339,795		66	*
High Voltage High Current Power Supply		264,776		35	*
LASER Power Supply		296,947		28
Portable CD Player Adapter For Car		213,137		12	*
Power Supply		739,335		259	*
Solid State Tesla Coil NEW!		147,167		4
Solid State Tesla Coil/High Voltage Generator		445,222		51
Transformerless Power Supply		463,904		117	*
Voltage Inverter		339,830		51	*
Voltage Inverter II		203,918		19	*

Sound/Radio

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
22 Watt Audio Amplifier		586,214		182
3 Watt FM Transmitter	Rae XL Tkacik	336,162		83	*
50 Watt Amplifier		508,626		74
8 Note Tune Player		141,425		12	*
8 Watt Audio Amp		373,721		67	*
Aircraft Radio Communications Receiver		279,328		49	*
Crystal Radio		159,690		53	*
Digital Volume Control		339,307		47	*
Electronic Stethoscope		322,066		142	*
FET Audio Mixer		344,401		41
FM Transmitter		1,009,194		420
Guitar Fuzz Effect		248,443		54	*
Microphone Mixer	Anatoly I. Shikhatov	251,412		26	*
Mono To Stereo Synthesizer	oRbEq	134,609		18	*
One Tube Regenerative Radio NEW!		143,151		4	*
Op Amp Radio		389,730		80	*
Single Chip AM Radio NEW!		100,590		3	*
Single Chip FM Radio NEW!		173,438		1	*
Sound Level Meter		342,811		51	*
Stereo Tube Amplifier	Weslee Kinsler	269,130		15	*
Tone Control		310,577		31
Transistor Organ		200,506		28

Telephone

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Detailed View: On/Off
Circuit	Author	Views	Rank	Comments	Marker
Cut Phone Line Detector		164,363		27	*
FM Telephone Bug		236,180		57
Phone Busy Indicator		214,733		24	*
Remote Telephone Ringer		119,064		3	*
Ringing Phone Light Flasher		219,212		35	*
Simple Phone Tap	Derek Tombrello	384,415		98	*
Telephone Hold Button		129,869		10
Telephone Recorder		217,419		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.