Electronic timepiece

Details Electronic timepiece Electronic timepiece

1979-06-19

1982-03-23

Truhe, J. V.

Electricity: motive power systems

Open-loop stepping motor control systems

318647, 368204, 368202, 368 11, G05B 1940

Patent

active

043215203

ABSTRACT:
An electronic timepiece includes a stepping motor having a stator, a drive coil and a rotor which is driven in one of at least two different states. The state of the driving motor is changed in response to a change in the load of the motor or in response to the locating of the motor in an external magnetic field.

REFERENCES:
patent: 3756010 (1973-09-01), Kimura et al.
patent: 4158287 (1979-06-01), Nakajima et al.

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