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Patent Searching and Data


Title:
MOBILE TERMINAL
Document Type and Number:
Japanese Patent JP2010130804
Kind Code:
A
Abstract:

To provide a configuration that properly reduces an increased drive current even when a drive current flowing in a DC motor is changed into an overcurrent state in a mobile terminal including a vibrator.

A mobile terminal 1 includes a vibrator 44 and a drive circuit 80 for driving the vibrator 44. The drive circuit 80 includes a power supply V1 for supplying a drive current to a DC motor 50 and a semiconductor switch SW for switching ON/OFF the drive current. The drive circuit 80 is further provided with a current suppressing means that functions so as to reduce an increased drive current by changing an inter-terminal voltage state of the DC motor 50 from a normal-voltage state to a suppressed-voltage state when the drive current flowing in the DC motor 50 is changed from a normal state to an overcurrent state.

COPYRIGHT: (C)2010,JPO&INPIT


Inventors:
SHIMIZU TOSHIO
Application Number:
JP2008303500A
Publication Date:
June 10, 2010
Filing Date:
November 28, 2008
Export Citation:
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Assignee:
DENSO WAVE INC
International Classes:
H02P7/06; B06B1/04
Domestic Patent References:
JPH04281630A1992-10-07
JPH0311994A1991-01-21
JPH0479784A1992-03-13
JP2001268984A2001-09-28
JPH04208024A1992-07-29
Attorney, Agent or Firm:
Akito Tashita