Jack Schmidling wrote:
Scott Dorsey wrote:

It is not, no. You can use two out of phase, but that kills your volume
requirements.

Roger but how does one "out of phase" two transformers?

Okay, each transformer has the righthand side of the secondary tied to
ground.

So, you apply AC to the primary, with the hot on the left and the neutral
on the right to one transformer, but the hot on the right and the neutral
on the left to the other transformer. So the polarity is reversed between
the two.

Now you have two outputs, each very high voltage with respect to ground,
but out of phase. This is just like having a center-tapped transformer
of twice the output voltage, but with the center tap grounded.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."