Constructing the toroidal inductors as transmission-line transformers (cf. Jerry Sevick (SK)) makes them somewhat more efficient, assuming the circuit is designed for certain input and output impedances. ?
Of course, twisting the windings makes adding or removing turns on one winding much more difficult, and compressing or expanding the windings on the?core almost impossible. ? However, the descriptions?of the various woes suggest that the bigger problem?is getting enamel off the wires, not the impedance?of the completed inductor / transformer.
On Tue, Jun 21, 2022 at 11:08 AM ajparent1/KB1GMX <kb1gmx@...> wrote:
As someone that was involved with racing and aircraft ownership I still have my safety wire pliers.? Also a small hand cranked manual drill.
FYI: two many twists tends to make the wires brittle and I found around 8 twists is easy to work with.? Two few makes it loose and looks poor once on the core.? The majik number has a wide variation as I did it as parallel pairs and triples.? That looks pretty when using tricolor wire and buys nothing.? So there is a? fair amount of latitude.? ?Also wide variations tends to only show at increasing frequencies (greater than 20mhz).
Allison ------------------------------- Please reply on list so we can share. No private email, it goes to a bit bucket due to address harvesting
