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[AMPS] parasitics

To: <amps@contesting.com>
Subject: [AMPS] parasitics
From: measures@vc.net (Rich Measures)
Date: Fri, 24 Apr 98 19:38:38 -0800
>
>>
>>But a good suppressor should work at 50MHz also. 

If it does not melt down at 50MHz, it is going to not be so very 
suppressive at 100MHz.  

>>If the natural parasitic
>>of a 3-500Z is somewhere around 130MHz 

IMO, there is no natural parasitic resonance.  The tube has 5pF of Cout.  
Resonance depends on how much L one connects to the 5pF.  Various 3-500Z 
amplifiers have anode resonances of 90MHz to 155MHz, depending on the 
layout.  

>>why on earth would you use a
>>suppressor that can barely perform at 28MHz? 

Because a suppressor that is designed to run hot at 28MHz exhibits a 
minimal amount of Rp at VHF.  
>.........
>>>...... Rich is correct when he says that a magnetic field produces a 
mechanical force.
>>
>>If you are quoting from a textbook then a resounding YES.
>
Yo, Carl.........Anyvist who has seen the way the cables jump around on a 
high current welder when the arc is struck don't need no stinkin' book.  
>.........Crocodillian snip.........

cheers
Rich...

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


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