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Patent Searching and Data


Title:
OUTPUT INTERFACE CIRCUIT OF SQUID FLUX METER
Document Type and Number:
Japanese Patent JPH0634729
Kind Code:
A
Abstract:

PURPOSE: To process a measurement signal output from SQUID by synchronizing it with a clock of the same frequency as an alternating current bias electric current for SQUID.

CONSTITUTION: A negative pulse of a measurement signal VO is converted to a positive pulse by a negative inversion circuit 3, and it is outputted as a negative inversion pulse VM. As the measurement signal is delayed rather than the negative inversion pulse by a half-cycle delay circuit 4 by half a cycle of an alternating current bias electric current IB for SQUID and it is outputted as a delay pulse VD, it becomes possible for a process circuit 2 to process the negative inversion pulse VM and the delay pulse VD by way of synchronizing with a clock of the same frequency as the alternating current bias electric current IB.


Inventors:
INOUE ATSUKI
Application Number:
JP1992000194262
Publication Date:
February 10, 1994
Filing Date:
July 21, 1992
Export Citation:
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Assignee:
FUJITSU LTD
International Classes:
G01R33/035; H01L39/22; (IPC1-7): G01R33/035; H01L39/22
Attorney, Agent or Firm:
松本 眞吉