Electronic watch having a stepping motor equipped with an alarm

Details Electronic watch having a stepping motor equipped with an alarm Electronic watch having a stepping motor equipped with an alarm

1979-06-19

1981-04-07

Rubinson, Gene Z.

Horology: time measuring systems or devices

Signalling means

Time condition responsive

368250, 368 73, G04C 300

Patent

active

042610508

ABSTRACT:
An electronic watch having a stepping motor and equipped with an alarm, in which the number of power transistors necessary for the control of the stepping motor and of the alarm transducer is reduced so as to permit the integration of all the electronics of the watch of a single chip and to reduce the number of terminals of the integrated circuit and the number of interconnections.
A pair of the power transistors (5, 6) is common to the control of the motor coil (11) and of the alarm transducer coil (12) and the alarm control signal is inserted between the driving pulses.

REFERENCES:
patent: 4068461 (1978-01-01), Fassett et al.

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