• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Cathode stripping in low voltage tubes

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How dangerous should it be to apply +6 to +30VDC to a plate of a tube with no heater? Should this cause cathode striping as with high voltages?

I'm talking about spacecharge tubes during the first 11 seconds while it warms up. Is there a need for a standby switch or a timer/relay (with SS rectifier) at all? I wanted to make some field tests but before I'll get to destroying tubes I wanted to hear from someone more experienced than I (which means everybody here).

I guess in worst case it may cause some very minor cathode stripping but if it has no effect than why bother?
 
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