Switched capacitance automatic meter reading device

Details Switched capacitance automatic meter reading device Switched capacitance automatic meter reading device

1991-02-26

1992-10-27

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

34087037, 34087007, G08C 1910

Patent

active

051593351

ABSTRACT:
A humidity and temperature resistant apparatus for determining the orientation of a rotatable meter hand relative to a dial spaced apart from a meter hand that creates and depletes a charge between a center electrode, a meter hand, and an outer electrode ( a pad) very rapidly to transport electrons through a resistor capacitor combination, attached to a positive power supply, whereby the average current drawn through the resistor capacitor combination creates a voltage across the resistor capacitor combination that corresponds proportionally to the magnitude of the capacitance being measured.

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patent: 4633249 (1986-12-01), Sassaki
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patent: 5030950 (1991-07-01), Veneruso
E. R. Hnatek, "Applications of Linear Integrated Circuits," John Wiley & Sons, New York, May 1975, pp. 59-61.
Microelectronics Digital & Analog Circuits & Systems, Jacob Millman, McGraw-Hill Publishers, 1979.
Motorola Linear Integrated Circuits, Series C, 1979.
Electronic Devices and Circuits, Discrete & Integrated, M. S. Ghausi, Holt, Rinehart & Winston, 1985.
ME10 Universal Monolithic Dual Switched Capacitor Filter, National Semiconductor Corporation, ME10.

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