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Andrews Top Mystery: 1977 Perpetual Motion Spinning Toy

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This is Top Mystery by Andrews Mfg: a 1977 spinning top that keeps going on its base. There is a battery, coil, steel core, and transistor inside that keep the magnetized spinner going. You simply have to install a fresh battery to get started.

once you attach the battery, a magnetic field is created that keeps the spinner going. The transistor acts as a switch, so when the spinner stops, the motor is shut off to prevent battery train.

Andrews Top Mystery: 1977 Perpetual Motion Spinning Toy -- Gadgetify

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