公开(公告)号：US20240264120A1

公开(公告)日：2024-08-08

申请号：US18575897

申请日：2022-06-28

Applicant: ABB Schweiz AG

Inventor： Martin Zlatanski ,  Parham Davami ,  Jarl Sobel ,  Thomas Wiik ,  Jan Nilsson

IPC: G01N27/90 ,  G01B7/06 ,  G01N27/02

CPC classification number: G01N27/9006 ,  G01B7/10 ,  G01N27/025 ,  G01N27/028

Abstract: A receiver for a Pulsed Eddy Current (PEC) system configured to detect a changing electromagnetic field generated by eddy currents induced in an object of an electrically conductive material. The receiver includes an electrically conductive receiver coil, a high-voltage receiver channel, a low-voltage receiver channel, and an over-voltage protection connected between the receiver coil and the LVRC. The OVP includes a bias circuit B, a diode D connected between the receiver coil and the bias circuit, and a capacitor C connected between the bias circuit and the LVRC.