Re: Some BCI Filter Notes
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Chuck,
There has got to be a chart somewhere telling me how many turns is the maximum per wire size on some of these various toroid sizes. The fact that you and Rex said to use 20 turns of number 24 ga wire on a? T37-2 toroid is probably telling me that #22 ga might not fit on it. Just saying, LOL.
Thank you for the very thourough into that I will keep in mind while doing these many toroid windings. My biggest issue so far is my big fat fingers, especially after spending weeks working on the RV to make it dry camping super friendly.
Cheers, Davey - KU9L
On Saturday, April 15, 2023 at 04:49:35 AM EDT, Chuck Carpenter <w5usj@...> wrote:
John,
The MRCC Link:? I did a search for Mini Ring Core Calculator.
WOW... Lots of hits.? Not sure which one to pick. There are two versions, 1.2 and 1.3.3 and they are from Germany.
Still using ver 1.2 as there was a language problem (for me) with 1.3.3 when it was first available so I've not upgraded.
I think it's been englishized now. Maybe someone on QRPtech is more up-to-date on a safe link?
Davey,
Use the largest size that will fit the number of turns on the core. The resistance of the wire goes up with the small gauges. That will reduce the "quality" of the circuit where used. Maybe not much but...
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David Knapp