公开(公告)号：US20020067172A1

公开(公告)日：2002-06-06

申请号：US10004756

申请日：2001-12-04

Applicant: PACE MICRO TECHNOLOGY PLC.

Inventor： Ray Alker

IPC: G01R027/26

CPC classification number: G01R15/14 ,  G01R15/144 ,  G01R15/16 ,  G01R15/22 ,  G01R19/0084

Abstract: Apparatus for measuring voltage across an isolation barrier. The apparatus includes a voltage input and a voltage output and an opto-isolator provided between the voltage input and voltage output. Processing means are provided at the voltage output to measure and/or monitor pulse width. A Circuit arrangement including two transistors and two resistors is provided to allow a substantially constant current to flow through the opto-isolator.

Abstract translation: 用于测量跨越隔离屏障的电压的装置。 该装置包括电压输入和电压输出以及设置在电压输入和电压输出之间的光隔离器。 在电压输出处提供处理装置以测量和/或监视脉冲宽度。 提供包括两个晶体管和两个电阻器的电路布置，以允许基本恒定的电流流过光隔离器。