[Amps] 3.5 kV 2A REGULATED Power Supply: Schematic ?

[R.Measures]

>R.Measures wrote:
>>> -----Original Message-----
>>> From: Vic Rosenthal [mailto:vic at rakefet.com]
>>> Sent: Sunday, December 28, 2003 10:19 PM
>>> To: bill at wjschmidt.com
>>> Cc: 'R. Measures'; frank_goenninger at t-online.de; 'AMPS'
>>> Subject: Re: [Amps] 3.5 kV 2A REGULATED Power Supply: Schematic ?
>>>
>>> Dr. William J. Schmidt, II wrote:
>>>>  So you mean I can just replace my bias supply with a charged
>>>> capacitor.. .since you think the tube puts no current load on the
>>>> bias supply?
>>>
>>> If it is pure AB1, never driven into grid current, and if the
>>> capacitor and circuitry have zero leakage, then I don't see why not!
>>>
>> **  Because the tube needs to be biased to cutoff at turn-on or the
>> tube will draw maximal anode current.  For example, with 0v on the
>> grid, a 4cx1500A draws c. 3A at 4000V.

>A capacitor might not be ideal, but a suitable voltage battery could be
>used, and probably last most of its shelf life.
>
**  Steve  --  A 4cx1500A  needs c. 180v to cut the tube off.   A 
transformer seems to be a bit more practical than a battery.