[Amps] LK500-ZB

[TexasRF at aol.com]

It seems there could be a risk of excess filament current if the "wrong"  
filament pin is selected. To minimize the risk of this, both filament pins  
can be connected together and the "zapper" connects from there to the  grid.
 
73,
Gerald K5GW
 
 
 
 
In a message dated 9/11/2009 9:50:42 A.M. Central Daylight Time,  
vic at rakefet.com writes:

Paul  Decker wrote:
> 
> Would I just put this to the heater  pins?

Between ONE of the filament pins and the grid! Across the  filament would 
of course destroy it.

My experience with these tubes has  been that it's common to see a short 
that develops only 
after the filament  warms up. In this case, you wouldn't be able to do this 
with a cold  tube.
-- 
73,
Vic, K2VCO
Fresno  CA
http://www.qsl.net/k2vco
_______________________________________________
Amps  mailing  list
Amps at contesting.com
http://lists.contesting.com/mailman/listinfo/amps