Joule Thief 50 watt "The Bear" Russian Ge Power Transistors

Russian Ge PNP transistors in a Push Pull configuration SMPS Boost converter. Invented in 1954 the Royer Oscillator is still used today Patent # 2,783,384
This is easy to Build, the Hardest part is the transformer If you have wound A Standard Joule Thief you can wind this performance is excellent. Instructions are at Tony Izaguirre as well as prints Please Watch my other videos on the Nike Hercules Joule Thief. Many Power Transistors tried All worked Have fun Building Be Safe Tony
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