Amps
[Top] [All Lists]

[AMPS] Re: two questions

To: <amps@contesting.com>
Subject: [AMPS] Re: two questions
From: measures@vc.net (Rich Measures)
Date: Tue, 9 Sep 97 22:00:32 -0800
>I don't know who wrote this, but I believe I see the fundamental error
>which has led to so much confusion:
>
>>>Follow this simple series of facts........
>>>
>>>1.) Rich claims a "low Rp" is desirable, and we both agree his 
>>>suppressor has lower VHF Rp than a stock suppressor.
>>>
>>>2.)  A direct short has an Rp of  zero ohms.
>>>
>_______________________________________________________________
>When you say "A direct short has an Rp of  zero ohms" there is the
>error.  A direct short IN THE SUPPRESSOR actually equates to an Rp of
>INFINITE ohms.  When the series resistor goes to zero, the parallel
>equivalent goes to infinity, so the statement in #2 above is exactly
>backwards.  With infinite Rp, the Q of the parasitic tank circuit
>becomes high, and oscillations become likely.
>
>The reason Rich's suppressor has a lower Rp is because it has a HIGHER
>series resistance, not lower, and certainly not a short.
>
>Make sense?

It makes sense, Bill.  
Rich---

R. L. Measures, 805-386-3734, AG6K   


--
FAQ on WWW:               http://www.contesting.com/ampfaq.html
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com
Search:                   http://www.contesting.com/km9p/search.htm

<Prev in Thread] Current Thread [Next in Thread>