It's a Rectifier Module Not a Bridge...
There are 2 independent rectifiers inside each one.
A ->| +
B ->| +
Cut the negatives off of the bridges and that should work...
It's a Center Tapped transformer with the tap serving as a return...
---------------->| +
C
--------------- (-)
C
---------------->| +
Haven't seen these rectifiers in use for a long time.
Except in 3 phase circuits.
How old is that supply ?
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