[AMPS] FW: Suppressor analysis

[Steve Thompson]

-----Original Message-----
From: measures <2@vc.net>
To: Peter Chadwick <Peter_Chadwick@mitel.com>; 'amps' <amps@contesting.com>
Date: 14 August 2000 22:09
Subject: Re: [AMPS] FW: Suppressor analysis


>
>>
>>
>>
>>> ----------
>>> From: Steve Thompson[SMTP:rfamps@ic24.net]
>>> Sent: 13 August 2000 07:42
>>> To: Peter Chadwick
>>> Subject: Suppressor analysis
>>>
>>> Peter, I wonder if you might do me a favour? There's something wrong
with my
>>> subscription to amps and it won't accept my postings. Please could you
>>> forward this for me?
>>>
>>> >
>>> >-----Original Message-----
>>> >From: measures <2@vc.net>
>>> >To: Steve Thompson <rfamps@ic24.net>; AMPS <amps@contesting.com>
>>> >Date: 07 August 2000 16:45
>>> >Subject: Re: [AMPS] Suppressors
>>> >
>>> >
>>> >EUR  A parasitic suppressor has two current paths whose EMFs are
decoupled.
>>> >Thus, the higher inductance path (L-supp) resonates the anode a bit
>>> >lower in freq. than does R-supp.  The effect is similar to
stagger-tuning
>>> >an IF transformer to reduce Q/increase bandwidth.  .
>>> >
>>> >
>>> >I've tried to analyse and visualise this from several directions, and I
>>> >always end up with the conclusion that your description is wrong.
>
>ok
>
>>>I reckon
>>> >that you get a single overall effect which is the vector combination of
the
>>> >two paths through the suppressor. I'm wide open to correction here -
can
>>> >anyone else help?
>>> >
>>> >One way I looked at it was to apply Rich's analysis to a parallel tuned
>>> >circuit - if we add another capacitor in parallel, do we get two
different
>>> >resonances, or one which is defined by the combined effect of all the
>>> >components?
>
>€  Steve  -  you added a capacitor instead of adding an inductor.  Whasup
>with that? Capacitors do not generate electro magnetic fields.  This
>problem does not involve 2 capacitors and one inductor.  It involves two
>inductors - whose emfs are not mutual - and one capacitor.
>
Is the result different if you take a parallel tuned circuit and add an
extra inductor in parallel? I'd say not.

Steve


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