Device for measuring the level of a variable signal with logarit

Details Device for measuring the level of a variable signal with logarit Device for measuring the level of a variable signal with logarit

1980-09-03

1983-08-09

Sloyan, T. J.

Boots, shoes, and leggings

330144, 330278, 340347DA, 340347M, 73900, H03K 1302

Patent

active

043982611

ABSTRACT:
A device for measuring the level of a variable signal delivered by a sensor. It comprises a series of attenuators, receiving the signal from the sensor, a squaring and integrating chain for converting the value of the signal delivered by the attenuators into its root-mean-square value, and a recorder. The attenuations are calibrated in dB. The device comprises an AGC circuit, receiving the output signal from the squaring and integrating chain, for switching the attenuators and controlling the recorder. The output signal from the attenuators is maintained constant.

REFERENCES:
patent: 3919657 (1975-11-01), Howlett et al.
patent: 4078233 (1978-03-01), Frye
patent: 4255706 (1981-03-01), Soojian

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