From: dxmm@albury.nospam.net.au   
      
   On 21/05/14 06:38, Ian Field wrote:   
   >   
   >   
   >  wrote in message   
   > news:alpine.BSF.2.00.1405200925160.13722@bunrab...   
   >>   
   >>> On Tue, 20 May 2014 12:10:49 +0100, Daniel   
   >>>  wrote:   
   >>>>   
   >>>> Don't know!! The impression I got was that domestic mains supplies PF   
   >>>> varied reasonable as it was, due to domestic fridges, fluoro's, T.V.'s,   
   >>>>  etc, switching on and off at different times,   
   >> They switch on/off during few cycles (allowing for a starting surge)   
   >> and run/don't run for many cycles, so the switching on & off only   
   >> matters for the overall load. The type of load does matter.   
   >>   
   >>>> that the major power   
   >>>> suppliers did not worry about the domestic situation .... but in   
   >>>> industrial situations, yes, the major power suppliers could/would   
   >>>> require PF correction.   
   >> Or they bill appearant power & the major users /want/ PF correction,   
   >> Note that if you use a lot of reactive power it adds to the current on   
   >> the grid and the power company still has to put in heavier wire, so it   
   >> does cost them /something/.   
   >>   
   >> On Tue, 20 May 2014, Uncle Peter wrote:   
   >>> Inductive and capacitive cancel each other out in a street.  You   
   >>> can't cancel out clipping.   
   >> But the clipping occurs with a relatively constant phase. It may   
   >> create a nasty current waveforms which can be a problem but that's not   
   >> what power factor refers to.   
   >   
   > Its not power factor as I understood it to be, but it appears to have   
   > become trendy to refer to any AC current waveform distortion as a PF issue.   
   >   
   > In any event; the circuitry to eliminate the current blips as the   
   > rectifier tops up the reservoir has become generally referred to as   
   > power factor correction.   
      
   Well then, what "has become generally referred to as power factor   
   correction" is *WRONG*   
      
   Daniel   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)