发明名称 DEVICE FOR SUPPLEMENTING BLANK STEP FOR STEP MOTOR OF TIMEPIECE
摘要 The present invention concerns a time-piece comprising a system for detecting the non-rotation of a stepping motor and for making-up lost steps. The detection system comprises a device for measuring the current delivered to the motor, the logic level of the measured signal being used for controlling a correction circuit delivering additional pulses to the stepping motor. The measuring device comprises a short duration measuring pulse generator, a reference signal source, and a comparator having an output which controls the correction circuit.
申请公布号 JPS54116976(A) 申请公布日期 1979.09.11
申请号 JP19780157346 申请日期 1978.12.20
申请人 EBAUCHES ELECTRONIQUES SA 发明人 BERUNAARU MAIRU
分类号 G04C3/14;H02P8/02 主分类号 G04C3/14
代理机构 代理人
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