(H. R. Bob Hofmann) writes:

If you know how to do safely do a diode voltage doubler, you can (and
it is a switcher type). TV sets don't care bout the line frequency.

I would somewhat disagree. With an AC-DC-AC-DC convertor input, the
filter capacitors for the rectified ac need to be larger when powering
from a 50 Hz supply.

This is true but in practice, I'd be very surprised if they were designed
that close to the edge.....

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