[Amps] re: EBS at soft or quiet moments

wb8jkr at juno.com wb8jkr at juno.com
Mon Aug 4 12:55:19 EDT 2003


  It is a grid driven amp. Isn't bias between the cathode and grid?
 Works the same way, just has grid current flowing through it rather than
cathode and grid current.

Mark  WB8JKR


On Mon, 4 Aug 2003 07:51:30 +0100 "Steve Thompson" <g8gsq at qsl.net>
writes:
> Mark  WB8JKR wrote:
> 
> >The EBS circuit goes in the cathode/grid path, I.E. cathode
> >to ground (grid). It is installed from the anode of the bias zener 
> to
> >ground
> >(grid) and the B- goes to the junction of the bias zener cathode 
> and the
> >tube cathode in a cathode driven amp. So in effect, the EBS is in 
> series
> >with the tubes cathode - grid path.
> Ahh - when you mentioned 250s on 2m I jumped to the assumption that 
> it would
> be the regular grounded cathode, grid driven arrangement and I 
> couldn't
> figure how the capacitor helped in that situation.
> 
> 73, Steve
> 
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