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A transformer with a built-in sensing motor, featuring the single-phase sensing motor formed by a rotor and expanding coil, where the rotor is disposed in the hole of said transformer in free rotation and the expanding coil in the gap between the core of the transformer and the rotor, being the expanding coil coiled at least one protrusion of the core.
TW086105465A1997-03-281997-04-26Transformer with a built-in sensing motor
TW335497B
(en)