[TCML] Bifilar coils

[Peter Baitz]

Hi all,

Questions about use of bifilar coils.  

http://en.wikipedia.org/wiki/Bifilar_coil

I know this is used sometimes as a primary, but has anyone used it as a secondary?   Further, when making a bifilar, does one count the *pair* as the winding, ie. 700 turns is 700 pairs, or does one count 350 turns counting both additively 350+350=700  ?  I know this almost sounds trivial, but maybe it isn't?      And does anyone know of a good bifilar calculator?     

Thanks