Variable Dc Power Supply Circuit Diagram

As the name suggests a variable power supply circuit provides the user with a range of linearly varying output voltages through a manually controlled potentiometer rotation.

Variable dc power supply circuit diagram.

A variable dc power supply is very important for electronics projects prototyping and hobbyists. A power supply can be given from the battery or from a hardware circuitry which converts the ac supply into the dc supply or step down ac to step up ac and vice versa. Below is the schematic for the dc power supply so that we can see how all the parts are connected and are brought together. And there are ic1 is used to control a voltage at out point by adjusting vr1 can adjust voltage between 0 50 volts.

A variable power supply is one which facilitates the user to vary and adjust the desired output voltage and output current. Continuously variable short circuit and overload protected hum free stabilized output. The circuit of a universal power supply described here complete with schematic diagram and parts list fulfills all the above criteria and more importantly the construction costs hardly anything. 0 50v 3a variable power supply circuit.

For smaller voltages we normally use batteries as a reliable source. Above are the parts needed to create a dc power supply. They work together with two transistors tr1 tr2. Instead of using batteries which have a limited lifetime a variable dc power supply can be used which is implemented in this project.

1 25v dc continuously variable 0 2amps. A lm317 is a versatile device which helps an electronic hobbyist to build a variable voltage power supply quickly cheaply and very efficiently. 0 30v variable power supply at 3a two resistors r1 and r2 limit the overload current.