Dual full rectifier supplies

[Nigel Goodwin]

This cct also work with one bridge.

Yes, a standard fullwave rectifier, using a centre tapped transformer (or in your diagram two transformers), generating split supplies.

But this wasn't what he wanted to do.

 

[TheOne]

But his original circuit won't work with one winding at 12.6V (unless he removes the GND from the bridge and connects it as a centertap 12.6V+12.6V) as the -ve voltage is then too low to feed the -ve 12V regulator as Ron also found in his first simulation. Will only work with a doubler setup. One of the first posts say something about a center tap transformer on the diagram. :?

Sebi, yes! (fixed), like I said the -ve side will be 1/2 wave doubler and the +ve side standard full wave.

I was thinking in terms of a light or no load and the danger of max input voltage to the regulator which is -40V. The -ve section will still work as a 1/2 wave voltage doubler where the top will be normal full wave rectification.