On 6/29/2016 1:02 PM, Jim Brown wrote:
the core used in his experimental work was a Fair-Rite #61 material.
This is is rather high-Q material, so its resonance is both narrow and
difficult to measure. It is a VERY poor material for a common mode choke
Saw that. The article shows good balance with his resistive test, but
doesn't say much about efficiency mismatched.
Cores I dealt with working in EMC were usually Fair-Rite 44 or
Steward/Laird 28, not especially low-loss cores either, but quite common
at Hamfests. I might see what I can do to replicate the design with 4:1
Ruthroff followed by a 1:1 Guanella.
Cortland Richmond
ka5s
_______________________________________________
RFI mailing list
RFI@contesting.com
http://lists.contesting.com/mailman/listinfo/rfi
|