>From: measures <email@example.com>
>To: Peter Chadwick <Peter_Chadwick@mitel.com>; AMPS <firstname.lastname@example.org>;
>'Steve Thompson' <email@example.com>
>Date: 03 August 2000 16:11
>Subject: RE: [AMPS] Suppressors
>>>For what it's worth, my feeling is that the series inductance lowers the
>>>parasitic frequency of the anode circuit below that of the grid circuit.
>>>By reducing the Q of the parasitic circuit, the amount of loading needed is
>>>reduced., because the gain at the parasitic frequency is reduced.
>>This is not borne out in practice. Anode-resonance frequency is not
>>changed much when the suppressor is shorted out.
>In which case, the inductance contributed by the suppressor must be
>insignificant in the system.
The suppressor was shorted out by c. 1" of copper wire. This has c.
10nH, about the same L as R-supp. This is why the anode resonance
>This means that Q of the suppressor alone is
>unimportant - the only thing that counts is its ESR vs frequency
? VHF ESR is directly related to VHF Q.
- Rich..., 805.386.3734, www.vcnet.com/measures.
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