Joule Thief: Variations… Alternate Toroid, Reversed Transistor Comparisons
After the last video with the serendipitous wiring error, I decided to make an easily configured testbed and try some variations. Interesting….. I tried the generic 2n3904 type, reversed and correct, the metal-can 2n2222a reversed and correct, and the alternate toroid with a single wire center tapped winding and a secondary. Results are interesting. The secondary of the alternate toroid can make 60 volt peak spikes with the LED removed (not shown). Thank you for watching this unusually long demonstration.