Re: [TCML] 400 hz variacs

[jimlux <jimlux@xxxxxxxxxxxxx>]

EVP wrote:
>    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.

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