Capacitance sensing device

Details Capacitance sensing device Capacitance sensing device

1981-04-01

1982-10-12

Goldberg, Elliot A.

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

73304C, 7386108, 361285, 361400, H01G 700

Patent

active

043542190

ABSTRACT:
A capacitance sensing device for detecting the amount of material flowing through a passage includes layers of disk-shaped insulating substrates having electrode films formed on surfaces thereof facing each other, and the insulating substrates are supported by an insulating support member as a unit and spaced from each other. The electrode films are alternately connected by a pair of conductors to form a capacitor. Electric circuit elements, forming a detection circuit which is connected to the pair of conductors and which detects a change in capacitance of the capacitor depending on the amount of material flowing through the spaces between the electrode films, are formed on the outer surface of an outermost one of the substrates in a form of a monolithic circuit or a hybrid circuit.

REFERENCES:
patent: 2691223 (1954-10-01), Oberlin
patent: 3148314 (1964-09-01), Ponemon

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