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In a thread about a low impedance transformer for a Q meter, it was suggested two cascaded two 10 to 1 transformers
to get 100 to 1 ratio. 3C90 material was used.
I have 3F3 that is similar but a little lower ui. I\'m hoping flat 100kHz to 100MHz, but really only need 30MHz.
I have pot cores, are there any tricks to winding that will make for better coupling or less strays?
Is there any advantage to a wide band for the one turn secondary vs a single 22 gauge wire? I have copper strap
or brass shim stock.
Put the one turn on outside, on inside?
I have room for 12 turns, put the one turn right in the middle, 5 turns on each side?
I\'ve built one, but I need a better jig to measure with the NanoVna. Parts on the way.
Thanks, For you input, Mikek
In a thread about a low impedance transformer for a Q meter, it was suggested two cascaded two 10 to 1 transformers
to get 100 to 1 ratio. 3C90 material was used.
I have 3F3 that is similar but a little lower ui. I\'m hoping flat 100kHz to 100MHz, but really only need 30MHz.
I have pot cores, are there any tricks to winding that will make for better coupling or less strays?
Is there any advantage to a wide band for the one turn secondary vs a single 22 gauge wire? I have copper strap
or brass shim stock.
Put the one turn on outside, on inside?
I have room for 12 turns, put the one turn right in the middle, 5 turns on each side?
I\'ve built one, but I need a better jig to measure with the NanoVna. Parts on the way.
Thanks, For you input, Mikek