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Basic dual power supply

This is a basic circuit dual power supply which fixed output voltage.This circuit used widely in general OCL power amplifiers.
The output voltage calculated by:

Vo = 1.414 x Vac

When Vac = Secondary transformer voltage .

for exaple if transformer is 24-0-24 V the output voltage is
1.414 x 24 = 34V

The capacitor should have rated voltage greater than 34V.For diode rated voltage should be greater than 2x1.414xVac.


Click to enlarge
The R1 and C1 is noise cancelled when the main power switch turn on to reduce noise into our circuit.
 
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