System and a method of driving a parallel-plate variable...

Details System and a method of driving a parallel-plate variable... System and a method of driving a parallel-plate variable...

2008-07-15

2008-07-15

Nguyen, Dao H (Department: 2818)

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

C361S277000, C361S281000, C257S415000, C257SE23106, C257SE29275, C251S129040

Reexamination Certificate

active

07400489

ABSTRACT:
A method of driving a parallel-plate variable micro-electromechanical capacitor includes establishing a first charge differential across first and second conductive plates of a variable capacitor in which the first and second conductive plates are separated by a variable gap distance, isolating the first and second plates for a first duration, decreasing the charge differential to a second charge differential which is less than the first charge differential and in which the second charge differential corresponds to a second value of the variable gap distance.

REFERENCES:
patent: 5889708 (1999-03-01), Hwang
patent: 6140737 (2000-10-01), Boie
patent: 6657421 (2003-12-01), Pastor et al.
patent: 7085121 (2006-08-01), Lynch et al.
patent: 2003/0006777 (2003-01-01), Murphy

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