hobby electronic circuits

If you want to Protect some door from unwanted access then you can use this simple…

Automatic street light circuit

Construction and Working Simple and easy to construct automatic street light circuit is given here, this…

This simple continuity tester circuit constructed with single npn switching transistor SL100, this circuit will give…

This simple desktop lamp circuit gives enough light during night time work without disturbing others. Here…

This configurable alarm produces different types of tones. It can be selected by switches, this circuit…

This is single IC LM3909 variable LED flasher circuit, and it needs only 1.5 volts for operation,…

To detect movement or motion of person the simple PIR (Passive InfraRed) circuit can be used,…