[Amps] RE: 4CX250B Screen Supplies

[DF3KV]

>    In the amplifier I am currently building, I will be using an
> electronically-UNregulated resonant-choke 1500V screen PS.  The
> resonant choke is 9H//0.2uF and a filter C that is seemingly too
big.
> The logic here is that since both of my previous "plywood box" ugly
> amplifiers used electronically-regulated screen supplies -- which
> proved to be the most delicate part of the machine, something
simpler
> might be worth a try.  Thus, extra filter-C is an attempt to
minimize
> voice modulation IMD.  With luck, the result won't suck.  If it
does, I
> will go to a higher tap on the transformer and electronically
regulate
> down to 1500V with the + floating regulator shown at
> http://www.somis.org/D-a-08.GIF cheerz
> end

Hi all,

pretty good experience with screen powersupplies  for large tetrodes
with handles  are  built overhere with 3 single bridge rectified
powersupplies fed by 3 phases and paralleled  at the output, very
stiff!

73
Peter