I have a Jennings UCSL1000 - 1000pF, 5kV cap. If I put 5kV dc across it
and run it through its tuning range, the leakage current is sometimes
zero but fluctuates and there are places where the current leaps up to
50uA. At those points the current falls to zero if the voltage is
reduced to around 4kV, although I have heard a couple of arc 'pops' from
it sitting there at 4kV.
At other settings where the current is lower, 5uA or less, the leakage
dies away to zero if I leave it sitting there for a while.
Is this normal behaviour? Is this one a duffer?
Thanks,
Steve
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