[AMPS] SB-220 problem

[Rich Measures]

>I Wrote:
>
>> >The last thing you want, if the tube faults, is to have the grid fly 
>> >up to 3000 volts.  If the grid, because of series resistance, reaches 
anode voltage 
>> >levels during a fault... the next stop for the arc is the filament 
>> >and everything connected to the filament including the exciter. 

The 'fly up to 3000 volts' scenario is quite unlikely to happen because 
one of the three 500v caps from the grid to ground is certain to short.  
It happened in my amplifier.  It happens in other SB-220s.  
...snip...
>Carl, think before you assume something needs to "arc".

ROFL, L, L, L, L.

Rich---

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


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