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Patent Searching and Data


Title:
ミラー装置用モータ制御回路
Document Type and Number:
Japanese Patent JP4485768
Kind Code:
B2
Abstract:
The present invention provides a mirror device motor control circuit that can reliably stop a mirror at predetermined positions with a simple configuration. In the control circuit of the invention, part of a lock current flowing to the motor flows to a base terminal of a transistor. Thus, as long as a voltage corresponding to the lock current is equal to or greater than a specific value, this voltage is applied to the base terminal of the transistor, whereby between a collector terminal and an emitter terminal becomes conductive, and the current flowing to a gate of a MOSFET is grounded via the collector terminal and the emitter terminal of the transistor. For this reason, when the lock current flows, conduction between a drain terminal and a base terminal of the MOSFET is released and a drive current of the motor is cut off.

Inventors:
Junichi Nakabo
Application Number:
JP2003277621A
Publication Date:
June 23, 2010
Filing Date:
July 22, 2003
Export Citation:
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Assignee:
Tokai Rika Electric Co., Ltd.
International Classes:
B60R1/074; H02P3/08; B60R1/07
Domestic Patent References:
JP2002127824A
JP8207663A
JP10146079A
JP2001328487A
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori
Katsuichi Nishimoto
Hiroshi Fukuda