This is a bare PSU PCB for audio amplifier application. It consists of three separate parts on the same board : 

1. A dual rail high current rectification and filtering circuit ; 

2. A dual rail low current series regulator ;

3. A speaker protector circuit. 

This board is best to be used for power supply of integrated amplifier, where the high current side serves the power amplifier, and the series regulator serves the preamplifier, or for power amplifier that high current for the output drivers and the series regulator for voltage gain and input section.  The speaker protector circuit is the very robust and well proven type by means of protector IC uPC1237.

The high current section can house 6 snap-in type filtering capacitors with lead pitch of 10mm and diameter of 35mm.

The series regulator section can provide current good to about 100mA , depending on the heatsink size and efficiency. 

Specifications :

High current section: 

Operating voltage : AC 15Vx2 to 32Vx2

Output voltage : DC +/- 20V to +/- 45V

Low current section :

Output voltage : DC +/-15V to +/-28V by different resistor values( default value is +/-15V).

Output current : 100mA maximum( with default PCB heatsink size)

PCB dimension : 138mm x 110mm.