Title:
半導体スイッチの制御装置
Document Type and Number:
Japanese Patent JP4278572
Kind Code:
B2
Abstract:
A control apparatus includes a semiconductor switch (T1) that is arranged between a DC power supply and a load to control a turning ON/OFF operation of the load, a counter electromotive force judging unit (13) that determines whether a counter electromotive force produced on a first wiring line is greater than a threshold voltage, the first wiring line connecting the semiconductor switch to the DC power supply, and a control unit (12) that controls the semiconductor switch so as to be turned OFF when the counter electromotive force judging unit determines that the counter electromotive force is greater than the threshold voltage.
Inventors:
Shunzo Oshima
Application Number:
JP2004178801A
Publication Date:
June 17, 2009
Filing Date:
June 16, 2004
Export Citation:
Assignee:
Yazaki Corporation
International Classes:
H03K17/08; G05F1/10; H01H47/00; H03K17/04; H03K17/082; H03K17/30; H03K17/687
Domestic Patent References:
| JP2002353794A | ||||
| JP2001286180A | ||||
| JP7170758A | ||||
| JP8168236A | ||||
| JP2005341635A |
Attorney, Agent or Firm:
Hidekazu Miyoshi
Iwa Saki Kokuni
Kawamata Sumio
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu
Iwa Saki Kokuni
Kawamata Sumio
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu