Movement detector for a stepping motor

Details Movement detector for a stepping motor Movement detector for a stepping motor

G - Physics

04

C

318/20

G04C 3/14 (2006.01) H02P 8/00 (2006.01)

Patent

CA 1164523

MOVEMENT DETECTOR FOR A STEPPING MOTOR ABSTRACT OF THE DISCLOSURE A feed arrangement enabling detection of the movement of a stepping motor and providing such motor with a series of long duration pulses in the event of failure to step res- ponsive to a short duration pulse. The detector comprises means for sampling a first signal developed by the current in the motor winding and generating a second signal which is the integral of the first, in order to detect whether or not the motor has stepped. The invention is intended for use with micromotors as found in timepieces.

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