Re: PFC = power factor capacitor?

• To: tesla-at-pupman-dot-com
• Subject: Re: PFC = power factor capacitor?
• From: "Malcolm Watts" <malcolm.watts-at-wnp.ac.nz> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Sun, 13 Feb 2000 15:20:38 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Hi Harvey,

> 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

It is actually an "old" abbreviation well known to those in the 
switchmode power supply (SMPS) community. It is an *equivalent* 
resistance wired in series with a "perfect" capacitor that describes 
all resistive losses (dielectric hysteresis, leakage etc.). It is really an 
engineering modelling tool similar to modelling a real transformer as 
a perfect one with a single resistance in series with its windings. 

Regards,
Malcolm

• Prev: Re: 20 gauge wire
• Next: Re: Coil Grounding
• Index(es):
  • Main
  • Thread