Power supply control arrangement for a watch stepping motor

Details Power supply control arrangement for a watch stepping motor Power supply control arrangement for a watch stepping motor

1986-05-12

1988-01-12

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307267, 307297, 307470, 307269, H03K 504, H03K 1708, H03K 19007

Patent

active

047193689

ABSTRACT:
In a power supply control arrangement for the stepping motor of a watch an integrated circuit structure is disposed between the stepping motor and its energy source for controlling the supply of drive pulses to the motor. The circuit structure includes means for detecting the motor's non-response and means for supplying a correction pulse upon detection of non-response of the motor. There are further means for applying drive pulses of increased duration following such correction pulse for overcoming excessive loads and also means for shutting off the correction pulse or the energy source if the motor does not respond to the drive pulses of increased duration.

REFERENCES:
patent: 3166735 (1965-01-01), Clark
patent: 3836859 (1974-09-01), Behrens et al.
patent: 4420789 (1983-12-01), Breen
patent: 4494013 (1985-01-01), Ludowyk
patent: 4502014 (1985-02-01), Bismarck

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