[AMPS] Henry 2K2; glitch resistor in negative HV considerations

Richard W. Ehrhorn w4eto@rainbow.rmii.com
Wed, 12 May 1999 12:22:07 -0600


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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