"True, Reactive, and Apparent power
We know that reactive loads such as inductors and capacitors dissipate zero power, yet the fact that they drop voltage and draw current gives the deceptive impression that they actually do dissipate power. This "phantom power" is called reactive power, and it is measured in a unit called Volt-Amps-Reactive (VAR), rather than watts. The mathematical symbol for reactive power is (unfortunately) the capital letter Q."
http://www.allaboutcircuits.com/vol_2/chpt_11/2.html


„What is reactive power?”
http://www.pserc.wisc.edu/Sauer_Reactive Power_Sep 2003....

Akit a három teljesítmény kapcsolata is érdekel:
http://en.wikipedia.org/wiki/Image:Power_Triangle_01.png

„idle power” a szinonimája
„The motor while acting as a generator needs some kind of "power" from line too, namely the idle power or the reactive power.”
http://www.saunalahti.fi/elepal/moottori/gener_e.html


„idle power”, amely azonban készenléti teljesítményfelvételt is jelent!!!
„Idle Power (or inactive power), is an often neglected, but rather substantial contribution to the total energy consumption within portable electronics.”
http://www.quicklogic.com/home.asp?PageID=657&sMenuID=308



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Note added at 22 óra (2006-07-31 07:34:37 GMT)
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Nem túlbonyolítva a magyarázatot
„Meddő teljesítmény (reactive power):
- fantom teljesítménynek is nevezik,
- ez az energia elnyelődik és visszakerül (nem kerül felhasználásra),
- VAR értékben mérik (Volt-Amper-Reactive).”
http://ma.hu/page/cikk/ac/0/126470/1