Single channel electrical comparative measuring system

Details Single channel electrical comparative measuring system Single channel electrical comparative measuring system

1976-09-27

1978-05-30

Ruehl, Charles A.

Measuring and testing

Fluid pressure gauge

Diaphragm

307118, G01L 912

Patent

active

040916839

ABSTRACT:
A measuring system based on using a ratio of variable capacitance measurements derived from alternate sampling and referencing of at least two capacitance devices and use of a single channel for the capacitance outputs so that the measurements are basically independent of the circuit components, supply voltage, temperature drift problems. The measurements can be high resolution digital signals.

REFERENCES:
patent: 3237449 (1966-03-01), Brandt
patent: 3518536 (1970-06-01), Lee et al.
patent: 3543046 (1970-11-01), Tiffany
patent: 3811051 (1974-05-01), Merrell
patent: 3821900 (1974-07-01), Preikschat

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