发明名称 |
DISPOSITIF DE PROTECTION DU TRANSISTOR DE COMMANDE D'UN MOTEUR ELECTRIQUE, ENSEMBLE CONSTITUE PAR UN TEL DISPOSITIF ET SON MOTEUR ASSOCIE ET UTILISATION DANS UN VEHICULE AUTOMOBILE |
摘要 |
A DC motor (1) is connected in series with a power transistor (2). An adjustable potentiometer (3), whose tapping determines the base voltage of the power transistor (2), is used to vary the speed of the DC motor (1). In order to protect the power transistor (2) in the event of blocking of the DC motor (1), a comparator (8) is provided with compares the current through the motor (1) with a reference value and controls a relay (9, 10) in such a manner that the power transistor (2) is short-circuited if the current through the DC motor (1) is higher than the reference value. <IMAGE>
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申请公布号 |
FR2515890(A1) |
申请公布日期 |
1983.05.06 |
申请号 |
FR19810020583 |
申请日期 |
1981.11.03 |
申请人 |
MARCHAL EQUIP AUTOMOBILES |
发明人 |
CASIMIR CALVO |
分类号 |
H02H7/08;H02P7/288;(IPC1-7):H02H7/20 |
主分类号 |
H02H7/08 |
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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