Re: Electrolytic Cap Leakage revised

On Mar 28, 12:38�pm, "Iain Churches" <Iai...@xxxxxxxxxxx> wrote:
As the result of previous discussions, and helpful
info supplied by RAT subscribers, I built a box to test
cap leakage and also reform some NOS electrolytics
that were unused but had been in storage for several
�years.

I decided to re-form the 450V caps via a 10M resistor
chain, so that they charged *veeeery* slowly indeed.
After 3 hours, they were still only at 120V. After 24
hours they were at 158V so I added a switch to short
out two of the 3.19M resistors in the chain. �This got me
to 250V in three hours.

Further info, leakage figs, and pics at:

http://www.kolumbus.fi/iain.churches/Projects/ElectrolyticCapacitorTe...

Iain

Caps are so @#$%^&*()_ cheap given the consequences of a potential
failure, I have to ask ___ WHY?___

If the answer is "because I can", all well and good as a purely
technical exercise. But I would never put such an animal in anything I
were to trust as a daily driver. Period.

Peter Wieck
Melrose Park, PA
.

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