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LM723 variable power supply circuit

Using LM723 regulator can be designed a very simple variable power supply circuit which can provide a maximum current up to 2A and a variable voltage between 2 and 25 volts.
This 25v variable power supply is designed using a LM723 regulator and a few common electronic components.
Input voltage must be between 28 and 37 volts. Mj3000 transistor must be mounted on a radiator for heat dissipation.

Electronic Circuits: 
Circuit Diagram: 
LM723 variable power supply circuit diagram

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