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Random circuits

Cut Phone Line Detector

When the circuit detects that a phone line has been cut, it activates a MOSFET which can be used to drive a relay, motor, etc. It can also be connected to... [read]

Lightning Detector

Here is a VLF receiver tuned to 300 kHz designed to detect the crackle of approaching lightning. A bright lamp flashes in sychrony with the lightning bolts... [read]

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Circuit diagram symbolsWelcome to our Website! We are here to show You how to make various interesting electronic devices on your own. Some of the devices are: Amplifiers, Power sources, Metal detectors, Alarms, Insect repellant, light, sound or touch sensitive devices, Whistle responder which produces sound when called by a whistle and our visitor's favorite Light and LED devices… We can’t name them all right here, so we suggest You browse through our collection of diagrams on your own.

We have over 400 free electrical diagrams, divided into 10 categories. You can check out the list of categories here, or in the main menu on the right. By entering one of the categories, You will see a list of circuit diagrams with a brief description.

You won’t need too much of an experience, for making most of devices offered here, but it’s necessary to know how to work with a soldering iron, know the circuit symbols and also correct reading of the electrical diagrams.

We have to mention that some of the diagrams use voltages that can be hazardous to health and your life, so we urge You to read the disclaimer before making any of the devices from our website.

We hope You will have fun, and also learn something while making devices using information from this website. Thanks for visiting!

Top circuits

230V Blinking LED

I needed a pulsating light for a certain signaling. Voltage was 230V. So I decided to make a simple circuit, consisted of a LED diode, two capacitors, two... [read]

Low cost-Automatic Emergency Light

1. It is highly bright due to the use of white LEDs. 2. The light turns on automatically when mains supply fails, and turns off when mains power resumes. 3.... [read]