Digital magnetic flux measuring apparatus using superconducting

Details Digital magnetic flux measuring apparatus using superconducting Digital magnetic flux measuring apparatus using superconducting

1992-05-26

1994-02-15

Snow, Walter E.

Electricity: measuring and testing

Magnetic

Magnetometers

505846, G01R 3302, G01R 33035

Patent

active

052870588

ABSTRACT:
A digital superconducting quantum interference device type fluxmeter includes a flux sensor unit which detects external magnetic flux to be measured using a SQUID ring, and outputs pulse signals of corresponding directions and numbers, and a counter unit which counts the number of pulse signals output by the flux sensor unit inclusive of the directions thereof, in order to measure the external magnetic flux based on the counted result of the counter unit. The fluxmeter further includes an offset detection unit which detects the offset quantity of the counter unit generated by the magnetic flux trapped by the SQUID ring, and a feedback unit that feeds back to the flux sensor unit a signal that is obtained based on the detected offset quantity and the counted result of the counter unit.

REFERENCES:
patent: 4851776 (1989-07-01), Goto et al.

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