This circuit was originally designed to power a motorcycle intercom from the vehicle supply system. This type of intercom, which is used ...

This is the simple 1A Variable Regulated Power Supply Circuit Diagram. A power supply unit is a must for every electrical and electronic wo...

This is the simple 15V - 28V 4A Transmitter Power Supply Circuit Diagram. Power supply used for professional FM broadcasting transmitter. ...

This little circuit uses a LM317 variable voltage regulator to adjust the input voltage down to +9 volt, or whatever else you need. Just a...

This is the Elec +30V power supply with +5V Circuit Diagram.  I made the power supply which makes about +30V with +5V power supply. The di...