[AMPS] Screen regulator circuit needed

[km1h@juno.com]

On Mon, 16 Nov 1998 13:52:03 +0000 "Ian White, G3SEK"
<G3SEK@ifwtech.demon.co.uk> writes:
>
>
>>>Note that the necessary breakdown voltage foir a shunt stabilizer 
>device
>>>is not the output voltage, but the INPUT voltage, to handle 
>transient
>>>situations where the device is completely cut off and the
>>>drain/collector voltage rises all the way up to the input voltage. 
>(This
>>>is also why you can't use a transistor shunt stabilizer with a 
>dropper
>>>resistor from a B+ supply of more than 1-1.5kV.)

SNIP

Ian, what would be the impedence of a vacuum tube series regulator? And
what effect if any would it have at a Es of 1KV or more? 
While a 4CX250 would require a regulation of 1 volt or less for IMD
reasons would that hold true with large tetrodes?

Perhaps a tutorial on exactly what is involved in determining the screen
regulator impedence is in order. I admit to being somewhat confused by
all the claimed numbers of various methods.

Tnx!   Carl  KM1H



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