Circuit dc to dc converter
12V to +/- 30V for car with IC SG3525

This is circuit Dc to DC Converter for Car Power Amplifier,

Input 12V to Out +30V and -30V for Preamp or Power Amplifier.
use IC SG3525 and Mosfet,Circuit Switching supply.

I copy from forum : http://www.ubmthai.com/leksoundsmf3/index.php
Thank you