et voila!

two unifilar pancake coil with phi ratio hole. with all strands soldered together

single coil inductance 0.04 and 0.05 mH

series connected bifilar 0.17mH

always nice to see that inductance rise when its series connected.

two unifilar pancake coil with phi ratio hole. with all strands soldered together

single coil inductance 0.04 and 0.05 mH

series connected bifilar 0.17mH

always nice to see that inductance rise when its series connected.