27 Feb
2010
27 Feb
'10
6:27 p.m.
On Fri, Feb 26, 2010 at 2:26 PM, Tony Duell <ard at p850ug1.demon.co.uk> wrote:
I am suprised that voltage doubler PSUs (2 diodes, 2 capacitors) weren't
used in the States.
-tony
Ah, TV sets over here rarely had power
transformers at all... Every valved
monochrome TV Iv'e worked on... had a 300mA series string of valve heaters
and got the B+ line by half-wave rectifying the mains.
Sure, but your mains were twice the voltage of our mains.