Variable Regulated Power Supply Circuit Diagram

The 117vac or 220vac coming from the power cord is fed to the transformer tr1 via the on off switch and the 500ma fuse the 24vac output approximately from the transformer is presented to the bridge rectifier br1 and here rectified from ac alternating current to dc direct current if you don t want to spend the money for a bridge rectifier you can easily use four.

Variable regulated power supply circuit diagram.

Transistor variable power supply 1a 0 30v. It s based on the lm317 that controls a few high power bipolar transistors connected in parallel to achieve a 0 30v voltage interval and a maximum current of 20amps. For this article i m going to show you my variable regulated power supply built from scratch the circuit diagram i ve used and a few safety tips. Here is the circuit producing variable voltage power supply designed using fixed voltage regulators.

Adjustable power supply circuit. Regulated power supply block diagram. Variable power supply circuit from fixed voltage regulator. This circuit is not an absolute novelty but it s simple reliable rugged and short proof featuring variable voltage up.

The fixed voltage regulator is used to offer fixed voltage at the output terminal and does not depend upon the input voltage supplied. But it still has the same characteristics as a fixed regulated power supply. Simply said it is a power supply that can adjust the output voltage or current. A variable dc power supply is one of the most useful tools on the electronics hobbyist s workbench.