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Patent Searching and Data


Title:
FAN MOTOR CONTROLLER
Document Type and Number:
Japanese Patent JP2011172300
Kind Code:
A
Abstract:

To provide a fan motor controller quickly stopping rotation of a fan motor without allowing an excessive current to flow in a drive circuit of the fan motor when power is turned off regardless of a simple circuit configuration.

A braking circuit unit 2 includes a first braking circuit 3 for outputting a first braking signal to a drive control unit 12 when a supply voltage becomes not more than a first threshold and a second braking circuit 4 for outputting a second braking signal to the drive control unit 12 when the supply voltage becomes not more than a second threshold smaller than the first threshold.


Inventors:
TAMITSUJI TOSHIYASU
NISHI SHUHEI
Application Number:
JP2010030769A
Publication Date:
September 01, 2011
Filing Date:
February 16, 2010
Export Citation:
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Assignee:
MINEBEA CO LTD
International Classes:
H02P3/22; F04D27/00
Domestic Patent References:
JPS5622254A1981-03-02
JP2009055781A2009-03-12
JP2008009683A2008-01-17
JP2000092702A2000-03-31
JPS5622254A1981-03-02
JP2009055781A2009-03-12
JP2008009683A2008-01-17
JP2000092702A2000-03-31