Apparatus for digitally controlled calibration of frequency resp

Details Apparatus for digitally controlled calibration of frequency resp Apparatus for digitally controlled calibration of frequency resp

1983-11-14

1985-04-09

Mullins, James B.

Amplifiers

With amplifier condition indicating or testing means

328167, G01R 2300

Patent

active

045104549

ABSTRACT:
A system for tailoring the frequency response of the amplifier of an AC volt meter during calibration, comprising an adjustable filter consisting of a primary resistor and a number of differently valued capacitors connected together through a corresponding number of switches within an array. During a calibration mode, a test voltage is applied to the input of the amplifier, and the microprocessor switches different values of the capacitors in circuit with the amplifier. The combination of capacitors that causes the frequency response of the amplifier to match most closely with a predetermined response is selected for calibration.

REFERENCES:
patent: 4392068 (1983-07-01), Welles, II

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