Re: [CAD_CAM_EDM_DRO] Re: another transformer question

In a message dated 10-Aug-02 13:24:37 Central Daylight Time, eforum@...
writes:

> but the measurement says 60VDC, so should I risk it and go ahead to use the
> same capacitor, even if only temporary? What happens when one exceed the
> rated voltage of a capacitor?
>

Peter: Before you believe ME, believe some educated/experienced person such
as Mariss on this point. However, I am GUESSING the "WVDC" rating of
electrolytics is generally DE-rated, so a "50 V cap." SHOULD be OK, at least,
for a day or so with DC across it, on ten more volts. I have a 35 WV
capacitor across a "nominal" 35 VDC supply which, when the Geckos "sleep"
(1/3 current), it sees more like 36 V, but SURELY this is "within
tolerance"??? It "works", anyway!

I ASSUME an electrolytic on OVERvoltage will behave the same way as one put
in "wrong way around", that is, with the +end to negative. It simply heats
up and the "rubber end" blows out, spraying yellow electrolyte all over the
fine expensive semiconductors (IC's) in your rig. Gotta WATCH that! This
stuff is surely at least minimally toxic, if it won't cause impotence within
femtoseconds of contact with mucus-membranes.

Be very, very careful! Wish I coulda known to tell MYSELF that back when
I was just po' white-trash!

Jan Rowland





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