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Re: [Amps] Suppressors

To: amps@contesting.com
Subject: Re: [Amps] Suppressors
From: Steve Thompson <g8gsq@eltac.co.uk>
Date: Wed, 30 Aug 2006 14:10:07 +0100
List-post: <mailto:amps@contesting.com>

Peter Chadwick wrote:
> Steve said:
> 
>  >What we want from the suppressor is low resistance between the anode and
> blocking cap/tune C at hf, and high resistance at vhf. Given that
> there's a series circuit from the anode through the suppressor, blocking
> cap and tune C to ground, looking at the series resistance the
> suppressor introduces is the useful way to view it<
> 
> This is where I disagree. 

 From what follows I'm guessing 'this' means the 'high resistance' part?
> A higher impedance at VHF between the anode 
> and the blocking capacitor means that there is more gain at VHF - at 
> least, at the anode connector. 

Yes, and maybe I should have said 'higher' rather than just 'high' - but 
are amplifiers unstable if you disconnect the blocking cap and introduce 
infinte R?

Steve
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