16 Jun
2009
16 Jun
'09
7:06 p.m.
There appear to be (7) terminals on each transformer.
Maybe +,-,GND on
the primary AC side, and then (4) terminals on the secondary DC side?? I
guess all (4) terminals would be the same voltage?
It would be more common to have 4 primary (mains) side terminals and 3
secondary terminals. There would be 2 115V primary windings which can be
connected in parallel for 115V mains or series for 230V mains and a
centre-tapped secondary that can be used witha couple of diodes as a
full-wave rectifier.
If there are 3 terminals on the mains side, it's possible one is an
inter-winding screen (sheild) and is connected to ground. 4 secondary
terminals would suggest 2 separate windings (which may or may not be the
same voltage).
-tony