Dual full rectifier supplies

Sebi said:

This cct also work with one bridge.

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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.

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.

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