"Michael A. Turd"

If the loads are equal.

** Not possible with paralleled secondaries.

Regulation is improved by doing that.

Somewhat, but still not as solid as parallel primaries.


** With identical transformers - it is.


I've seen
two separate transformers with the primaries in series and the
secondaries connected as a center tapped full wave bridge,

** Bad idea.


and the voltage bounced all over the place.

** It would, since each transformer is loaded on alternate half cycles.

it would have been even worse if
the transformers didn't saturate when the primary on that core went too
high.

** The only thing saving it.

It was done by some fly by night TV shop back in the '70s.


** I know of one *commercially made* stereo power amp ( 600 watt per
channel ) that had twin transformers, 120 volt primaries in wired series and
70 volt secondaries feeding separate bridge rectifiers and filter electros.
There was a permanent 10 volt difference in the + and - supplies.

When driven with low frequencies ( 20Hz ) the DC rails went berserk.

Insane.


.... Phil