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For the term "joule thief with e ferrite corepage10trackback".

3 Ultrabright Leds Powered By Joule Thief Ferrite Bead Circuit

This is a video of 3 LEDs (2-265000 MCD and 1-26500 MCD 10 mm Ultra brights)running from a single AA battery. Each LED requires between 4 and 4.5 vdc and over 100 mA’s each to light. For more info, see overunitydotcom in the Joule thief topic. This is …

Solar Joule Thief HEWEY Boxed

This is the ‘Automatic Solar Joule Thief’—-“Hewey”–boxed. The device is a simple Joule Thief LED/charger circuit with an automatic solar charger attached. It uses super capacitors instead of batteries to store the energy. “Hewey”…