[Amps] step start

[Victor Rosenthal 4X6GP]

Of course I understand that. But I got the impression from the original 
post that he thought there was some reason to apply plate/screen 
voltages to the tube slowly.

73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/

On 02/10/2023 17:46, jim.thom jim.thom at telus.net wrote:
> Date: Mon, 2 Oct 2023 16:42:10 +0300
> From: Victor Rosenthal 4X6GP <k2vco.vic at gmail.com>
> To: amps at contesting.com
> Subject: Re: [Amps] step start
> 
> <Why do you want a soft start on either plate or screen voltage? What
> <function does it serve?
> 
> <73,
> <Victor, 4X6GP
> <Rehovot, Israel
> <formerly K2VCO
> 
> Switch on a B+ supply with a 93uf filter cap, with no step start, and you
> will find out  quickly
> why step start is typ used.
> 
> What's the DC resistance of the 1 H choke ?  You will want a HD bleeder on
> the screen supply at all times.  If sized correctly, the combo of the HD
> screen xfmr, choke, 200 uf cap + bleeder should provide ample screen
> regulation  for SSB use.   The dynamic regulation should be ample for both
> your proposed B+ and screen supply.
> 
> Jim   VE7RF
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