dc voltage conversion

I am trying to build a mobile RF amp, and so far the schematics I have found are for base stations using 120v or 220v mains. I need to be able to produce a bi-polar power supply that gives me +- 50-70v dc from 12-13vdc. Any ideas will be helpful. Commonly available parts at reasonable cost would be appreciated. Schematics for a Solid State 100W CB linear amp would make me very happy also! Thanks DougTee

hmmm, I'm not sure of a specific supply schematic, but I would suggest looking at some vehicle audio amplifier schematics. Commonly, these vehicle audio amplifiers need to create a split supply from 12-13vdc, usually in upwards of 40-80 vdc, depending on the amp requirements. I would assume the same power supply setup would be necessary here.

Doug,

This circuit is close to what you want, I am sure it is possible to modify it!
**broken link removed**

Ante :roll:

thanks, Ante. I am still interested in a 100w cb linear amp! DougTee