NOISE REJECTION CIRCUIT FOR NONDESTRUCTIVE INSPECTION

摘要

PROBLEM TO BE SOLVED: To provide a noise rejection circuit for nondestructive inspection which can properly reject noise on a nondestructive inspection apparatus using a high-sensitivity magnetic sensor. SOLUTION: The noise rejection circuit for nondestructive inspection includes: an exciting coil 2; a pickup coil 5 for picking up a magnetic field by an eddy current generated in a sample by the exciting coil 2; a noise rejection circuit 6 connected to the pickup coil 5; an input coil 7 connected to the noise rejection circuit 6; and a nondestructive inspection apparatus 8 using the high-sensitivity magnetic sensor for detecting a magnetic field from the input coil 7. COPYRIGHT: (C)2010,JPO&INPIT