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RE: PFC = power factor capacitor?
Harvey,
See my reply re: submitted a few weeks ago.
Re: calcs: Parallel R to equiv series R affect on MMC perf
Reactance is perfect, i.e. it creates zero equivalent resistance...
however the following do create ESR:
dielectric loss resistance
any resistive load across a Cap or Inductor
a 10Meg bleeder across a Cap
a Spark Discharge to ground from the Sec (or Pri if things aren't well)
imperfect insulation of a coil form or wire covering
a board material the Cap's are mounted in
a rectifier with a load resistance
etc.
RseriesEquivalent = reactance^2/resistance_in_parallel_with_reactance
reactance is capacitive or inductive
Regards, Dale
-----Original Message-----
From: Tesla List [mailto:tesla-at-pupman-dot-com]
Sent: Thursday, February 10, 2000 5:31 PM
To: tesla-at-pupman-dot-com
Subject: PFC = power factor capacitor?
Original Poster: Harvey D Norris <Tesla4-at-excite-dot-com>
I am taking a guess at this latest abbreviation, it took me months to learn
that ESR meant equivalent series resistance in a capacitor. Does this mean
the ohmic resistance eqivalent to its capacitive reactance? Or does it
represent the resistance encountered as leakage current?
Sure wish the posters could at least say what the letters mean once in a
while. HDN