[sdiy] power supply question

[harrybissell]

Hiya Eduardo ;^)

The primaries should be in parallel, or series depends on voltage
(Parallel for 120V - watch the phasing !!!)

The secondaries may be connected in parallel for more current, or
in series for a center tap.

The polarity is marked on the data sheet... keep the polarities in phase

as if you were putting two batteries in series (+ faces the same way)

The two single pins are the connections to the rectifier bridge... the
two that you wire together are the center tap and go to ground

H^) harry.

elmacaco wrote:

> So I'm building another one of these bipolar jammies, and all is going
> well, except that I can't remember if I hook up my transformer to
> ground. I am using a pc mount dual primary dual secondary center
> tapped transformer.  four of the pins are to set up the primary
> voltage (155/230)  the other four are to set up series or paralell.
> these four pins are connected in pairs. the schematics I have show the
> ground connecting to the transformer, but I don't see where I would do
> this on this bad boy.  do I leave it unconnected? thanks guys, Eduardo