Re: [TCML] 400 hz variacs

[dave pierson <dave_p@xxxxxxxxxxx>]

> > There must be enough iron for the lowest frequency but the high 
> > frequency limit is sort of arbitrary and determined by leakage
>> reactance and possibly parasitic capacitance.  Whole issue is
>> core saturation and for any particular core area and frequency
>> there is a minimum number of  turns per volt required.  Look up
>> transformer design on Google and you  should get plenty of
>> discussion.
 
> and loss.. that drives the lamination design (and is why RF
> transformers  don't use laminated cores..), particularly the
> thickness of the laminations.
  
     ...and core (lamination) material...

     best
      dwp
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