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

[Rich Measures]

>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.

€  If the glitch-R is on the neg side of the anode-current meter shunt 
resistor, it should act to limit peak fault current  --  provided that 
the insulating ability of the neg. HV circuit is equal that of the  pos. 
HV circuit.  Why go to the trouble of providing extra insulation in the 
neg HV circuitry when the workaround is simple?
>
-  later, 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
>



Rich...

R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures  


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