"Duncan Munro" a écrit dans le message de news:
...
On Mon, 24 May 2004 23:34:35 +1200, bill ramsay wrote:

28V transformer to feed 100,000u cap, with a 0.5ohm resistor, then
1000u cap into the tube. ie. 2 ohm load,

or am i missing something here, 28V ac seems a long way away from 10v
dc, or is this an artifact of the high current pulsing away and
charging the caps?

Bill, what is the source impedance of the transformer? It needs to be
very
low for what you are proposing here. If you can mail me the psu file,
I'll
have a look at it for you.

Hi !
PSUD II is a great tool !! Thanks Mr Munro !
Simulating with a (probable) 10.5v and 0.15 Ohms internal impedance tranny,
result is right for one tube (5A) using a 50,000µF cap.
Yes, it remains some 3V pp ac component, but does this really matters ?
It 'is already 10 times lower than using AC :)

Yves.

--
Duncan Munro
http://www.duncanamps.com/