Measuring circuit for detecting measurement signals

Details Measuring circuit for detecting measurement signals Measuring circuit for detecting measurement signals

1989-12-12

1991-05-28

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

25022721, H01J 4014

Patent

active

050197045

ABSTRACT:
A control loop comprising a control section, a set value/actual value comparator and a controller is expanded for ultraprecision measurements in such a way that, to detect measurement signals, the control variable connection between the controller output and the control section input is guided via a measured value transducer and, to evaluate and display the measured value, the correcting variable output of the controller is additionally connected to an evaluating circuit.

REFERENCES:
patent: 4572948 (1986-02-01), Brooks
patent: 4752141 (1988-06-01), Sun et al.
patent: 4900921 (1990-02-01), Spillman, Jr.

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