公开(公告)号：WO2016160439A1

公开(公告)日：2016-10-06

申请号：PCT/US2016/023659

申请日：2016-03-23

Applicant: COOPER TECHNOLOGIES COMPANY

Inventor： BUELL, Richard R.

IPC: G01R19/00

CPC classification number: G01R19/0023 ,  G01R15/06 ,  G01R19/0084

Abstract: A voltage sensing circuit includes an amplifier (12) having a first input (16) and an amplifier output, the first input being coupled to a node (20) comprising a virtual ground, and a first impedance element (8, 30) having an input structured to be coupled to the conductor and an output coupled to the first input of the amplifier through the node. The first impedance element is structured to cause a current signal having a current directly proportional to the voltage on the conductor and a substantially zero volt voltage to be provided to the first input of the amplifier through the node responsive to the voltage of the conductor being provided to the input of the first impedance element. The amplifier is structured to cause an output voltage that is directly proportional to the current of the current signal to be provided at the amplifier output.

Abstract translation: 电压感测电路包括具有第一输入（16）和放大器输出的放大器（12），所述第一输入耦合到包括虚拟接地的节点（20）和具有虚拟接地的第一阻抗元件（8,30） 输入，其被构造为耦合到导体，以及通过节点耦合到放大器的第一输入的输出。 第一阻抗元件被构造成使得具有与导体上的电压成正比的电流的电流信号，并且基于提供的导体的电压，通过节点将基本上零电压提供给放大器的第一输入端 到第一阻抗元件的输入。 该放大器被构造成使得与在放大器输出处提供的电流信号的电流成正比的输出电压。