102 Search results

For the term "patent pending bifilar".

Tesla Bifilar and Hairpin Bifilar Windings Compared

There seems to be some confusion and misconception about the use of the term “bifilar” in coil windings. Two “files” or wires parallel on the form… but how they are wired electrically makes a…

Joule Thief: Sohei Thoth’s "Wireless" Bifilar JT, Enhanced

The inductor of the Joule Thief can be made in many different ways. Instead of the cored inductor, Sohei Thoth has been exploring “wireless” versions using air core coils, bifilar wound. “Wireless” isn’t really…

Resonance Effects: Tesla Bifilar Coil Alternating Field Rotating a Magnetic Compass

Here’s a little illustration of an interesting phenomenon. A small magnetic compass is placed onto a Tesla Bifilar pancake coil, and the coil is driven by an alternating square wave at a frequency that…