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Ultrasonic cleaner repair -

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Electro-Mechanical Resonant Oscillator

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Did You Do This Before Phones Were Boring?

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Classic simple clock pendulum circuit

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GAME OVER!? - A.I. Designs New ELECTRIC Motor

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Pulse Motor

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Vacuum Tube Tesla Coil with the GU81M

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Faultfinding and repairing a PC power supply - Part 1, initial PCB testing