[Amps] parasitic excuses

[John Lyles]

Hi Colin
The point there was that even I cannot resist the urge to blame a parasitic. Actually it was my co-engineer who suggested it, and I was a doubter, but had to prove it otherwise. However, I do think that many cases of parasititus may come from overactive imaginations, which, unfortunately, have been cultivated from old QST articles, and from the WWW discussions in some small way. But, stick a hot dawg glass tube with lots of lead inductance in a circuit, crank the plate voltage high, put long thin connections on the plate tuning capacitor, and don't neutralize it, and you may guarantee to find one!

73
John
K5PRO


-----Original message-----
From: "k7fm" k7fm at teleport.com
Date: Fri, 17 Aug 2007 08:18:13 -0600
To: jtml at vla.com
Subject: Re: [Amps] 8122 and parasitic excuses TSPA

> Hi John:
> 
> What is this?  You and your fellow engineers seek to assure us that 
> parasitics are very unlikely - then when a catastrophic event occurs, you 
> immediately think of parasitics.  Is this a bit of self-doubt?
> 
> Hope this does not turn out to be like the television evangelist condemning 
> the sins of bad sex who is then found to hang around with prostitutes.
> 
> And, hopefully, you will not turn over to the Dark Side.
> 
> 73,  Colin  K7FM
>