Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Patent
1993-06-28
1995-05-23
Wieder, Kenneth A.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
324663, 324681, 324686, G01R 2726
Patent
active
054184681
ABSTRACT:
An apparatus for determining the position of a movable object is disclosed. A pair of fixed elements having spaced electrically conductive surfaces form a capacitor. A movable element having an electrically nonconductive composition is connected to the movable object. The movable element is disposed between the fixed element pair. In response to the movement of the movable element, the capacitance value of the variable capacitor changes. A circuit detects the change in capacitance and determines the relative position of the movable object.
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patent: 5040272 (1991-08-01), Fritzsche
"Handbook of Transducers for Electronic Measuring Systems", Harry N. Norton, pp. 168-169, Copyright 1969.
"Linear Displacement Measurement Circuit", Lewis D. Meixler, Jan. 1990.
Baker Thomas M.
Codina George
Szentes John F.
Brown Glenn W.
Caterpillar Inc.
Materson David M.
Wieder Kenneth A.
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