Variable Dc Power Supply Circuit Diagram. The main supply of 220v is fed directly to the centre tapped transformer. We ll now go over each part of this circuit and go over the role each component plays so that you can know how this circuit works.
The picture above is the circuit diagram of the power supply. When the current exceeded tr1 and tr2 will work. One of them is the extra pair of 470 uf capacitor and 1n4007 diodes below the main bridge rectifier.
Instead of using batteries which have a limited lifetime a variable dc power supply can be used which is implemented in this project.
This circuit is not an absolute novelty but it s simple reliable rugged and short proof featuring variable voltage up. It will keep a stable voltage when it. 0 50v 3a variable power supply circuit. Simply said it is a power supply that can adjust the output voltage or current.
