Circuit Diagrams

This site contains lots of FREE electronic circuits (schematics) & do-it-yourself (DIY) circuit diagrams for hobbyists, students, professionals etc. Covering a wide range of categories in electronics like:

audio amplifiers, power supplies, home related, computer related, transmitters, receivers, light and LED...

There are also links to sites that offer hobby electronic kits and other electronics hobby related stuff. Use the menu on the right to browse different circuit categories.

If you are looking to purchase electronic equipment, try our electronics store

Static Electricity - Negative Ion Detector

This device can detect negative ions in air. It has very few components: one FET, two resistors and battery. You also need multimeter to complete device. This device reacts, for example, on a TV radiation or air ionizer.

Curtain Control

This hybrid circuit uses a mixture of transistors, an IC and a relay and is used to automatically open or close a pair of curtains.

16.Apr.2007. - PIC16F84A discolight effect with bass beat control project updated! New photos, diagrams and texts.

17.Mar.2007. - Ten new circuit diagrams in various categories.

25.Feb.2007. - Four new diagrams in audio category.

24.Feb.2007. - Five new diagrams in test and measuring category.

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