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For the term "2 transistor 1 watt oscillator".

Joule Thief: Supplement: Photo Transistor NTE3037 Response Linearity Test

In order to determine the light output curves for JTs, one needs some kind of reliable and consistent detector system to measure the brightness level, and thus the light power output, of the JT’s…

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…