Magnetic noise reducing device using squid

Details Magnetic noise reducing device using squid Magnetic noise reducing device using squid

G - Physics

01

R

G01R 33/025 (2006.01) H05K 9/00 (2006.01)

Patent

CA 2067963

A magnetic noise reducing device can effectively produce a practically noiseless space that can reduce environmental magnetic noise harmful for measuring biomagnetism with a high magnetism damping factor in low frequency range. The magnetic noise reducing device comprises a SQUID flux meter and a pair of noise canceling coils as minimum components, the feedback current I produced by the SQUID flux meter being supplied to the noise canceling coils, the magnetic flux detecting coil of the SQUID flux meter being arranged within a specific central space defined by the noise canceling coils for effective reduction of magnetic noise within that space.

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