In article , pfm wrote:
I was working on an CRT TV using an isolating transformer. I happened
to measure the voltage between the chassis 'dag' and a nearby metal
fixture and was surprised to find 75Vac. Without the transformer the
reading was 110Vac.

Something is wrong, right?

BobH

You shold be able to trace it out. I'm glad you said isolation transformer
rather than isolation transformer. You want ground isolation because the primary
is referenced to ground. You can check out some resistances with the AC
removed.

greg