[Amps] Screen Supply

[Ian White G/GM3SEK]

Richard Frizell wrote:
>-----Original Message-----
>From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
>Behalf Of Chris
>Sent: Friday, 9 September 2005 3:27 AM
>To: amps at contesting.com
>Subject: [Amps] Screen Supply
>
>Can anyone help me with a schematic for a screen supply for a 4cx15000a? Or
>point me in a direction in which I may locate one? I need a model reference.

>Hi Chris
>
>Look at this
>
>http://www.ifwtech.co.uk/g3sek/boards/tetrode/tetrode-2.htm
>
>Download the manual
>
Also download the QEX article for some basic information about screen 
supplies - including ideas to avoid.

But according to the tube data, we're taking about a 1500V screen supply 
at 170mA! That's a bit rich for my normal solid-state screen regulator.

However, the Tetrode Boards manual may still provide some design ideas. 
For example, you could think about using the solid-state control circuit 
with a vacuum-tube shunt regulator. A 4CX250B might just about hack 
it... you wouldn't be short of cooling air...


-- 
73 from Ian G/GM3SEK
http://www.ifwtech.co.uk/g3sek