Method for balancing the sensitivity of two channels in a differ

Details Method for balancing the sensitivity of two channels in a differ Method for balancing the sensitivity of two channels in a differ

1977-05-17

1978-11-28

Corcoran, Robert J.

Electricity: measuring and testing

Magnetic

Calibration

324238, 307353, 307355, 328147, 328168, 73618, 250214AG, G01R 3312

Patent

active

041278135

ABSTRACT:
A method is provided for balancing the sensitivity of two channels comprising intermittently-appearing pulse waves, such as the signals generated by respective sensors in a detecting couple which is used in the so-called differential detection of flaws in materials. The balancing of the levels of the pulse signals is accomplished by the use of, essentially, a pair of sample and hold circuits, one or two variable gain amplifiers and the same number of comparison loops as variable gain amplifiers.

REFERENCES:
patent: 3714441 (1973-01-01), Kreda
patent: 3986037 (1976-10-01), Faulhaber
patent: 3999133 (1976-12-01), Lee et al.
patent: 4037163 (1977-07-01), Nicholas

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