Movement detector for a stepping motor

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

1980-06-23

1982-08-24

Miska, Vit W.

Horology: time measuring systems or devices

Electrical time base

Solid state oscillating circuit type

318696, 368217, G06F 104, H02P 140

Patent

active

043464637

ABSTRACT:
A feed arrangement enabling detection of the movement of a stepping motor d providing such motor with a series of long duration pulses in the event of failure to step responsive 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.

REFERENCES:
patent: 4112345 (1978-09-01), Goddijn
patent: 4114364 (1978-09-01), Takahashi
patent: 4208868 (1980-06-01), Regnier et al.
patent: 4212156 (1980-07-01), Kawanura et al.
patent: 4241433 (1980-12-01), Ueda et al.
patent: 4271496 (1981-06-01), Shida et al.

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