>
>measures wrote:
>>? I have tested many metal anode-cooler 3-500Z tubes that g/fil. shorted
>>after a big-bang. The majority had under 3uA of grid/anode leakage at
>>8000v. The subsequent autopsies revealed no arc marks on the grid.
>
>The reasons for observing low gas currents if you delay more than a few
>seconds after the event have been explained many times - "it's the
>gettering action".
>
In almost all cases, the mains breaker or mains fuses opened at the
big-bang. .
>Does testing 3-500Zs cause amnesia?
>
Gettering in cold 3-500Z's?. Only in the Rauchian world.
cheers, Ian.
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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