Appeal No. 1997-4050
Application 08/535,317
The voltage appearing on lead 110 is proportional to the
position of mass element 36 between the plates of support members
82, 84 because a sense electric field is created between sense
conducting plates 90’ by voltage V and because sense conducting
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plates 90 of mass 36 are disposed in the path of that sense
electric field. When the mass element moves toward the plate of
top support member 82, the voltage on sense plates 90 and lead 110
approach the magnitude V Conversely, when the mass element moves
cc.
toward the plate of bottom support member 84, the voltage on sense
plate 90 and lead 110 approaches zero or ground magnitude.
Consequently, with the reference voltage V /2 applied to
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differential amplifier 20, its output on lead 122 is a sense
displacement signal proportional to the distance that mass element
36 has moved from a reference position halfway between supports
82, 84.
The voltage V applied between force conducting areas of platesqq
of top and bottom support members 82, 84 creates a force electric
field across the force conducting areas 92 of mass 36. A negative
feedback circuit including charge generator 130 produces an output
on its output lead 112 in response to the output displacement
signal from lead 128 to apply an amount and magnitude of electric
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Last modified: November 3, 2007