[Amps] TenTec Titan 425

[Steve Thompson]

-----Original Message-----
From: Richard <2@mail.vcnet.com>
To: Steve Thompson <g8gsq@qsl.net>; AMPS <amps@contesting.com>
Date: 08 March 2002 18:27
Subject: Re: [Amps] TenTec Titan 425
>-----Original Message-----
>From: Richard <2@mail.vcnet.com>
>To: jljarvis <jljarvis@abs.adelphia.net>; AMPS <amps@contesting.com>
>Date: 08 March 2002 16:52
>Subject: Re: [Amps] TenTec Titan 425
>snip
>>€  The 425 I worked on exhibited - with a Funderberg high-pot
>>gold-sputtering test, migrant gold damage in both 3cx800A7s........
>
>I've seen the effect of leakage changing when anode/grid polarity is
>reversed in 8875s and 8877s, but I'm puzzled by the mechanism. For gold
melt
>balls to be the cause, I figure that (a) they must be, and remain,
>negatively charged

€  agreed

>and (b) they must be repelled more by gold wires with -ve
>charge than whatever is on the inside of the anode with the same -ve charge
>on it.

€ The whatever on the anode is 8kV positive or negative.  This is
apparently sufficient to attract or repell the negatively charged gold
melt-balls - and change current flow.  Typically, I see way less leakage
current with negative 8KV.  With air leakage, the current is the same
with either polarity.


I should have said ...whatever the metal is on the inside of the anode
...... If we have -ve charged gold meltballs, why should they exhibit
different repulsion from the gold of the grid compared with the copper(?) on
the inside of the anode?

Steve