Title:
ELECTRONIC APPLIANCE PROVIDED WITH OSCILLATION ALARM
Document Type and Number:
Japanese Patent JP3258125
Kind Code:
B2
Abstract:
PURPOSE: To provide a step motor for oscillation alarm being employed in an electronic appliance.
CONSTITUTION: In an electronic appliance provided with an oscillation alarm where the oscillation of a step motor, generated by driving a step motor having a rotor equipped with an eccentric weight, is transmitted through the case body to an arm, the step motor has two pole flat stator and the driving pulse for the step motor comprises a starting pulse, constituted of a phase matching pulse C and a starting pulse E, and a driving pulse H following thereto. The step motor is driven at high speed by the driving pulse H synchronized with the zero-cross time of counter electromotive force induced in a counter electromotive force detection coil 306.
Inventors:
Norio Miyauchi
Tomomi Murakami
Tatsuo Nitta
Tomomi Murakami
Tatsuo Nitta
Application Number:
JP8251993A
Publication Date:
February 18, 2002
Filing Date:
March 18, 1993
Export Citation:
Assignee:
Citizen Watch Co., Ltd.
International Classes:
B06B1/16; G04B25/02; G04B25/04; G04C3/14; G04C21/02; G04G99/00; H02P8/00; H02P8/02; (IPC1-7): G04C21/02; G04B25/02; G04C3/14; G04G1/00
Domestic Patent References:
| JP52120866A | ||||
| JP612990U | ||||
| JP447693U | ||||
| JP529259U | ||||
| JP2107089U | ||||
| JP5810087U | ||||
| JP6261910B2 |
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