This voltage regulator input need around 20 Volt to 25 Volt. The voltage regulator with zero ripple voltage regulator with zero fluctuations is the […]

This circuit will give you a 9V regulated DC voltage at maximum current of about 1A. The circuit uses stepdown tansformer with secondary output […]

The actual supply should get -20 V coming from rectifier/filter that is given to the collector of Darlington PNP-type pass transistor, a TIP 105. […]

A simple 9 Volt 2 amp power supply using a single IC regulator. This is very simple circuit. Everything is done by the regulator. […]