Automatic equalizer

Details Automatic equalizer Automatic equalizer

1985-05-17

1987-08-04

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Nonlinear

328142, 330104, G01R 1510, G06G 712, H03F 136

Patent

active

046848860

ABSTRACT:
An automatic equalizer for an electronic measuring instrument using a transducer to measure a physical quantity. A signal amplifier in the instrument has a positive feedback application point and a negative feedback application point. The automatic equalizer has a plurality of stages, each comprising an amplifier that draws its input from the compensated output of the signal amplifier. Each equalizer stage is biased to operate over a different range of output signal levels, and the amount of feedback supplied by each stage back to the positive and negative feedback application points is separately adjustable so as to equalize a different segment of the transducer response curve. The required bias signal level for each equalizer is independent of the response characteristics of the transducer and therefore can be determined solely with reference to the range of magnitudes of the output signal.

REFERENCES:
patent: 2796469 (1957-06-01), Papouschek
patent: 3225216 (1965-12-01), Grabowski
patent: 3955150 (1976-05-01), Soderstrand
patent: 4147989 (1979-04-01), Brolde

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