Joule Thief: Dark Alchemist / Lidmotor Mod at Low Voltage

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Continuing work on the Dark Alchemist’s mod of Lidmotor’s Penny circuit. Here it’s clear that it continues to oscillate well after the LEDs have gone out due to lack of peak voltage.
I also use the Grundig G8 radio in the LW mode to listen to the RF coming from the circuit at around 245 kHz or so.

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