[Amps] parasitic suppressor voodoo

[Alek Petkovic]

At 09:27 PM 15/07/2010, DF3KV wrote:
>Parasitic suppressors should be designed for the circuit which needs it.





OK. Just a simple question from down under.

Who, among all the subscribers on this list, knows how to do that?

I'm not talking about cut and try methods. I'm 
talking about mathematics and tube spec sheets 
and parasitic frequencies etc etc. I have NEVER 
seen anything, anywhere, which gives the designer 
or builder of an amplifier, the tools or formulas to work this stuff out.

Time and time again, we hear this Nichrome stuff 
raised and time and time again, the two camps 
slug it out and time and time again, nobody wins.

I don't wish to align with any side here. My question is genuine.

How would I design a parasitic suppressor from 
scratch? What formulas would I use to calculate 
the L, R for a particular tube or a particular rf deck layout?

Don't tell me stuff like "four turns and 50 ohms 
worked for me." I am talking science and that 
sort of approach is NOT scientific. Gimme calculations. Somebody must know.

73 and thanks,
Alek. VK6APK



>The parasitics frequencies vary with tube selection and amp layout.
>Most of the time I don´t even need one.
>
>
>73
>Peter
>
>-----Original Message-----
>From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
>Behalf Of Randy Pence
>Sent: Donnerstag, 15. Juli 2010 14:10
>To: amps at contesting.com
>Subject: [Amps] parasitic suppressor voodoo
>
>Can someone explain the difference between the Parasitic Suppressors ** that
>Rich Measures sells compared to the ones Jeff Weinberg sold.
>
>--
>Randy Pence
>N4JZY
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 From sunny Binningup, Western Australia

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