Rich et al...
1. I doubt that the manufacturers' recommendations are meant to dissuade
users from negative-lead resisting - more likely that the + line is more
"obvious" and they didn't give it a thought. If you can imagine, that is,
Eimac (for instance) not thoroughly thinking everything through &
publishing data accordingly.
2. If the resistor is in the -HV line with a suitable clamping diode, it's
difficult to imagine how tube damage or no damage resulting from an HV arc
would be any different from that with R in +HV lline.
73, DIck
>>
-----Original Message-----
From: Rich Measures [SMTP:measures@vc.net]
Sent: Wednesday, May 12, 1999 9:37 AM
To: Richard W. Ehrhorn; amps@contesting.com
Subject: RE: [AMPS] Henry 2K2; glitch resistor in negative HV
considerations
.....snip...
>
>
? good point, Dick. However, the problem of additionally insulating the
neg. HV circuit is obviated by putting the glitch-R in the positive HV
lead -- as is recommended by numerous power grid tube manufacturers. .
. In the Henry Radio 3-500Z amplifiers that have a glitch-R in the neg.
lead, I have heard of many instances of grid-fil shorts occuring during a
big-bang. .
>
- cheers
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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