[Amps] 8877 Time Delay Query

[Steve Thompson]

> HV is no danger to the emissive surface unless cutoff bias is removed 
> during the preheat period.
In most cases gg triodes aren't actively biassed off, they 
are self biassed at a very low current level by having a 
high value resistor in the cathode. That limits the maximum 
cathode current to a low level which is very unlikely to 
damage the cathode even if anode volts are applied during 
warmup.

Steve