"pfm"
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?

** Wrong.

DMMs typically have 10 Mohms impedance across the leads when in any of their
AC volts ranges - so a reading of 75 volts AC indicates there is leakage
of about 7.5 uA of AC current.

Equates to about 600 pF of capacitance ( primary to secondary) in the iso
tranny.

Try connecting a 0.1 uF cap from the TVs chassis to ground - that should
swamp the effect.


..... Phil