[AMPS] BWO Tube Helix Voltages...

[Peter Chadwick]

Jim asked:

>the Helix voltage is like a bias voltage, and not expected to draw any current.

Dopn't know about BWOs, but the helix in a TWT does draw current. The last one I
worked on was admittedly in the 1960's, but the helix on that drew 1.8Amps at
22kV. The collector ran depressed at 18kV and 2.5 Amps.

I presume that is slightly larger than Jim is thinking of.........

73

Peter G3RZP  



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