> Is the orginial Plate transformer and swinging choke
> worth anything to anybody? The transformer is 3400
> volts CT and powered up four 811A tubes.
You can electrically remove the choke and use the same
transformer for 572's. I would not sell the choke or change the
transformer, because the "return" isn't worth the potential losses.
The current 572B's from China, like the Svetlana 572B's, are very
very marginal on voltage breakdown. Using too much HV with them
is a bad idea, the 2300 volts or so you would get from the original
transformer with the choke disabled would be better both for
amplifier tank components (which were selected for 1500 volts HV
plus a small safety factor) and tube reliablity.
73, Tom W8JI
W8JI@contesting.com
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