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1. 发明授权

US4704575A Hall-effect current clamp 失效
标题翻译：霍尔效应电流钳
公开(公告)号：US4704575A
公开(公告)日：1987-11-03
申请号：US850529
申请日：1986-04-11
申请人： Daniel Arnoux , Claude Genter , Christian Anton , Eric Nascimben
发明人： Daniel Arnoux , Claude Genter , Christian Anton , Eric Nascimben
IPC分类号： H01L43/14 , G01R1/22 , G01R15/20 , H01L43/04 , G01R19/00
CPC分类号： G01R1/22 , G01R15/202
摘要： A Hall-effect current clamp, in which the constant-current generator (13) supplying the Hall-effect cell (8) comprises an operational amplifier (15) which has an internal-voltage reference (17) and which pilots a transistor (Q1) mounted in emitter follower in series with the cell (8), such that the current which traverses it is on the order of 1 mA. At the output of the measurement amplifier (14) of the clamp, a dividing bridge (P1,R5) whose intermediate lead is connected to the inverting (-) input of the amplifier (14) permits obtaining a supplementary amplification of the output signal of the clamp at the price of a low current consumption. Thus, the total current consumption of the clamp is maintained at a very low level, thereby providing a considerable increase in the life span of the batteries (9) used to supply the clamp.
摘要翻译：提供霍尔效应单元（8）的恒流发生器（13）包括具有内部电压基准（17）的运算放大器（15），并且导通晶体管（Q1）的霍尔效应电流钳）安装在与电池（8）串联的射极跟随器中，使得穿过它的电流大约为1mA。在钳位的测量放大器（14）的输出端，其中间引线连接到放大器（14）的反相（ - ）输入端的分压桥（P1，R5）允许获得放大器（14）的输出信号的补充放大该钳位以低电流消耗的价格。因此，夹具的总电流消耗保持在非常低的水平，从而提供用于供应夹具的电池（9）的寿命的显着增加。

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