[Lowfer] WA loop status report
Jay Rusgrove
[email protected]
Sun, 15 Sep 2002 07:08:59 -0400
Bill
I've got some FT 37 (.370) and FT 25 (.250) diameter 77's in stock that I can
send you for testing!
I suspect Mr. Gauss will have something to say in all this.
Jay
Bill Ashlock wrote:
> All,
>
> WA is back up to 1W after replacing the Litz cable with the RG-8 cable.
>
> Didn't get the opportunity today to find out what the problem was but will
> do this tomorrow. The DC resistance on all 4 individual cables measured much
> higher than it should have been. No abrasion was found.
>
> Made an interesting discovery in the requirements for the stepdown
> transformer design. I ran across a tiny .5" OD core made from #77 ferrite
> and tried it in my bench final and loop simulator. Used the same number of
> turns as with my larger #77 cores and found there was no loss in efficiency
> when comparing input power to output power into the loop (>95%). This makes
> it possible to construct a final including stepdown transformer about the
> size of a large postage stamp.
>
> Bill
>
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