发明名称 |
System for controlling the speed of a motor of an electric fan unit, notably for an automobile heating and/or air conditioning installation |
摘要 |
The invention relates to a system for controlling the speed of a motor ( 1 ) of an electric fan unit comprising a field-effect transistor ( 3 ) that controls the motor ( 1 ) using pulse-width modulation, the field-effect transistor ( 3 ) being connected to a circuit ( 5 ) comprising a voltage source ( 7 ) and a resistive element ( 9 ) in series, the circuit ( 5 ) is connected between the gate (G) of the field-effect transistor ( 3 ) and a second source (S 2 ) that is connected to a first source (S 1 ) of the field-effect transistor ( 3 ), via an inductor ( 11 ) in order to allow a reduction in the slope of the current as the field-effect transistor ( 3 ) switches.
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申请公布号 |
US2005194919(A1) |
申请公布日期 |
2005.09.08 |
申请号 |
US20050072770 |
申请日期 |
2005.03.04 |
申请人 |
VALEO CLIMATISATION S.A. |
发明人 |
XAVIER GOUMAIN;JEAN GATINOIS |
分类号 |
H02P7/29;H03K17/16;(IPC1-7):H02K7/02 |
主分类号 |
H02P7/29 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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