Logarithmic converters and their application to the measurement

Details Logarithmic converters and their application to the measurement Logarithmic converters and their application to the measurement

1988-04-27

1990-02-27

Shoop, Jr., William M.

Coded data generation or conversion

Analog to or from digital conversion

Nonlinear

356408, H03M 118

Patent

active

049050052

ABSTRACT:
The object of the present invention is the improvement of logarithmic amplifiers and/or converters and the applications of such devices in particular to photometric analyzer apparatuses.
These amplifiers are characterized by the fact that they are linear with an amplification gain programmable by the .mu.P computer and that they may be preceded optionally by a reference voltage system.
Application to the measurement of light transmitted by samples.

REFERENCES:
patent: 3530458 (1970-09-01), Willard et al.
patent: 3735393 (1973-05-01), Carbrey
patent: 3813609 (1974-05-01), Wilkes et al.
patent: 4291895 (1981-09-01), Tsujimura
patent: 4366469 (1982-12-01), Michaels et al.
patent: 4439038 (1984-05-01), Mactaggart
patent: 4467438 (1984-08-01), Zerlaut et al.
patent: 4616210 (1986-10-01), Ferber et al.
patent: 4616329 (1986-10-01), Abrams et al.
Sheingold et al., Analog-Digital Conversion Handbook, Jun. 1972, pp. I-2,3,8,9, and 30-35.

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