Tio Pedro wrote:
The same problem with the DC flow in the
transformer exists when a power transformer
is used with a halfwave rectifier.
Typically the transformer rating is degraded by
60% when be using with halfwave rectication
due to the DC current flowing in the secondary.

No, the DC currents sum to zero. That derating is only required when
the transformer secondary is poorly balanced.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."