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   alt.engineering.electrical      Electrical engineering discussion forum      2,547 messages   

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   Message 1,265 of 2,547   
   Daniel to D.H. Kelly   
   Re: Transformer theory--THE ANSWER   
   05 Sep 14 06:15:37   
   
   From: nidan.danny@gmail.com   
      
   On Saturday, 1 January 2000 19:00:00 UTC+11, D.H. Kelly  wrote:   
   > Your concern over this assertion was well placed. It would have been   
   > possible to use integral of H.dl around loop = current enclosed- hence H and   
   > flux outside the core whatever the mu.  (which you did as part of your>   
   development.)  You went a step further and I, for one, am glad that you did.   
   > Don Kelly   
   > dkelly@nabunalimo.lark.com   
   > remove the bull to reply   
   >   
   > BillyFish  wrote in message   
   > news:20000101001804.15555.00000237@ng-ce1.aol.com...   
      
   > > Let me point out that this whole thread started because someone made the   
   > > assertion that increasing the mu of the core to very high values would   
   > prevent   
   > > any flux outside the core.  I think that the consensus now is that such an   
   > > assertion is erroneous.  This glib assertion suckered me in.  In a sense,   
   > it   
   > > was a scam artist at work.  Well meaning maybe, but a scam artist   
   > nevertheless.   
   > >  I just had to *understand* why it was erroneous.  The scam misses the   
   > point   
   > > that a parallel H and E do not generate a Poynting vector.  Once that is   
   > > realized, everything else follows rather easily.   
   > >   
   > > Bill   
      
   so after 14 years was the conclusion reached that leakage inductance is in   
   fact essential to transformer power transfer.. or an unfortunate, usually   
   small but inescapable component which reduces coupling and hence reduces   
   efficiency?   
      
   thx...   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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