Say you have a CT transformer running into a a bridge then the bridge goes into two series capacitors with the CT into the middle. This is the "standard" dual polarity setup I think. Now, if you end up swapping the CT of the transformer for one of its other leads then, atleast from testing, one gets double th voltage.
something like
Transformer
A--
B--
C--
Bridge
V+out --
ACin1 --
ACin2 --
V-out --
Caps
CL --|| --- CG --- ||--- CH
So Normally A goes to ACin1 and C goes to ACin2 and V+out goes into CH and V-out goes into CL with CG attached to B.
Now if you instead attached B to V+out, which should effectively cut the voltage across CL to CH in half, and A to VG you get a voltage doubler like effect(across CL to CH).
But I can't understand why this seems to work without any ripple(atleast the simulation I did didn't have any ripple(atleast not large ripple).
It seems that connecting A to CG raises the floor by whatever the voltage across the transformer. Is this effectively a voltage doubler? (sorta looks like it but I it seems strange)
Thanks, Jon