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Re: [Amps] parasitic excuses

Subject: Re: [Amps] parasitic excuses
From: Peter Chadwick <>
Date: Sat, 18 Aug 2007 09:55:09 +0200 (CEST)
List-post: <>
There's no doubt you can get parasitics. In my experience, they don't just 
'appear' in an equipment that's operating satisfactorily, unless the resistors 
burn up - and if the parasitic is suppressed, then the only thing to heats the 
resistors is the signal current. Of course, the harmonic currents will provide 
heating, too - don't forget that in  Class B stage, the second harmonic plate 
current is only 6dB down on the fundamental.
But a lot of the suggestions we've seen here over the years strike me as being 
similar to the beliefs held in Salem some 300 years ago! I go along with Tom 
and John in this.
Peter G3RZP
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