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It contains a cap and a resistor - I'm reverse engineering, but that is all that is visible - some kind of an integrator, I guess. The resistor is 2 Megs, 1/2W carbon comp.
Someone mentioned coupling of the filament voltage to the cathode or grids - that probably is what is happening. More later!
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Brian
USN RET 22YRS (Avionics/Cal)
CET-Consumer Repair and Avionics ('88)
"Capacitor Cosmetologist since '79"
When fuses go to work, they quit!
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