Electronic timepiece

Details Electronic timepiece Electronic timepiece

1981-02-05

1983-09-13

Truhe, J. V.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, 368157, H02K 2904

Patent

active

044045107

ABSTRACT:
An electronic timepiece comprising a step motor composed of an electromagnetic coil excited by two phase alternating driving signals, characterized by comprising means for changing over the electromagnetic coil from a closed circuit condition to an open circuit condition and vice versa, means for detecting shocks, means for discriminating the shock direction, and means for controlling the driving signal.

REFERENCES:
patent: 4192131 (1980-03-01), Hosokawa et al.

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