[AMPS] Re: Bent filaments

[Rich Measures]

>> From:          Rich Measures <measures@vc.net>
>> Subject:       Re: [AMPS] Re: Bent filaments
>> Date:          Tue, 15 Jul 97 02:45:56 +0000
>
>I wrote:
>> >When the tube faults the grid flys right up to full anode voltage. 
>...snip...
>
>Rich replied: 
>> There is typically no abnormal gas in grid/filament shorted 3-500Zs.  
>> Without gas, how could there have been such an arc?  
>
>Sorry Rich, I only know English and it doesn't seem to work. ...
Don't take it to heart, Mr. Rauch.  There are probably quite a few others 
who would confuse a "personal director" with a "personnel director".  
Besides that, you recognized yourself as an amplifier "expert", not an 
English expert.  
... ...
>
>1.) In "Getters And Their Function in Vacuum Tubes", an arc is 
>listed as a means of gettering the tube.
>
>The arc is through the gas, and it destroys the gas molecules.

So both 3-500Zs got gassy and arced at the same time.  Both suffered from 
bent filament helices due the virtually simultaneous arcs, which shorted 
and near-shorted the grids to the filaments---and the arcing destroyed 
the gas molecules.  IMO, this scenario does not wash, Mr. Rauch.  
Rich---

R. L. Measures, 805-386-3734, AG6K   


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