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Old April 22nd 04, 01:23 AM
larrymoencurly
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CBFalconer wrote in message ...
larrymoencurly wrote:


These bleeders are needed to equalize the voltage between
the input capacitors,

Inside my Enermax EV365P-VD.. I couldn't find any bleeder
resistors across the high voltage 680uF capacitors or
even empty spaces
I still don't understand why there were no bleeders because
I've seen them in even the cheapest PSUs
Should I solder an approx. 200K resistor across each of
those capacitors in the Enermax?


They are only needed for voltage equalization when capacitors are
mounted in series. In the primary circuit this would be connected
with switching from 115 to 230 v nominal input. If they are used
in a voltage doubler circuit, for 115, no equalization would be
needed. If they are put in series, for 230, equalization is
required.


This is what I don't understand because while I'm using 115VAC, this
Enermax PSU has a switch for 230VAC operation. I know that when PSUs
are shipped to countries where 230VAC is used, the line fuse is cut to
half the amperage, but are bleeder resistors added for those
countries? In the case of this Enermax there aren't any places on the
circuit board for them.