percha-covered

Updated: May 8, 2025

The secondary, SS, of the best gutta percha-covered wire, has 26 layers, 10 turns in each, giving for each half a total of 260 turns. The two halves are wound oppositely and connected in series, the connection between both being made over the primary.

Nikola Tesla - Experiments with Alternate Currents of High Potential and High Frequency