High efficiency squarewave voltage driver

Details High efficiency squarewave voltage driver High efficiency squarewave voltage driver

G - Physics

09

G

G09G 3/00 (2006.01) G02F 1/01 (2006.01) G02F 1/17 (2006.01) G09G 3/34 (2006.01)

Patent

CA 2092950

ABSTRACT Presented is a device and method for providing a means of driving capacitive cells, such as those comprising suspended particle light valve windows, with a squarewave voltage signal at a select frequency with high efficiency and low power requirements. The invention uses an inductive circuit in parallel withthe capacitive load of the capacitive cell, a dc voltage source, and a fast switching means connected to timely control the polarity of the voltage source to the capacitive cell.

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