Apparatus for detecting a liquid mixing ratio

Details Apparatus for detecting a liquid mixing ratio Apparatus for detecting a liquid mixing ratio

1992-07-01

1993-12-14

Wieder, Kenneth A.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324442, 324663, 324698, 324704, 324710, G01R 2726

Patent

active

052706630

ABSTRACT:
A liquid mixing ratio detecting apparatus is designed so that an oscillation voltage generated by an oscillation unit is applied to one of a differentiating circuit and an integrating circuit, which is constituted by a combination of a capacitor composed of a pair of opposite electrodes for detecting a mixing ratio of a mixed liquid and a resistor, and a mixing ratio detecting unit produces a signal relating to an inclination rate of one of a differential waveform signal and an integration waveform signal, which is generated by one of the differentiating circuit and the integrating circuit, respectively, thereby obtaining a signal representing the mixing ratio of the mixed liquid on the basis of the produced signal relating to the inclination rate of the waveform signal.

REFERENCES:
patent: 3593118 (1971-07-01), Chaney et al.
patent: 3816811 (1974-06-01), Cmelik
patent: 4407100 (1977-09-01), Robinson
patent: 4470300 (1984-09-01), Kobayashi
patent: 5033293 (1991-07-01), Honma et al.

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