Lewis Hartswick wrote:

Michael A. Terrell wrote:
Transformerless TV sets used a half wave voltage doubler to get 250
to 300 volts DC from the AC power line. They didn't work on DC. I
serviced them through the '60s and '70s.

AH HA! Those GE sets with two Selenium rectifiers across
the front of the chassis. :-)
...lew...


Don't forget the electrolytic rated for high ripple current, between
them. Lot of sets used a 160 uF, 250 VDC electrolytic in that part of
the doubler. They liked to vent, or rupture when they failed. I changed
a lot of them, in the '60s and '70s. We carried at lest six in each
service truck.


--
You can't have a sense of humor, if you have no sense!