发明名称 Method of progressive switching-over of a transistor for controlling a contactor, and corresponding circuit
摘要 Circuit for progressive switching-over of a transistor T1 for controlling a contactor. A second transistor T2 operating as a current generator has its base linked to the drain of the transistor T1 so as, via the potential Ud of the drain, to control the supply of additional current to the feedback capacitor Cr via the transistor T2 in such a way as to progressively turn on the transistor T1 or to turn it off. <IMAGE>
申请公布号 FR2666683(A1) 申请公布日期 1992.03.13
申请号 FR19900011259 申请日期 1990.09.12
申请人 ABB PETERCEM 发明人 MACOVSCHI MIHAIL
分类号 H01H47/02;H01H47/32 主分类号 H01H47/02
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