Methods and circuits for distributing power to SPD loads
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United States of America Patent
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May 8, 2012
Grant Date -
Aug 28, 2008
app pub date -
Mar 10, 2008
filing date -
Jan 18, 2005
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Abstract
Methods and circuits for distributing power to suspended-particle-device (SPD) film products including SPD windows, SPD shades, and other SPD products, which are referred to generally as SPD loads. A driving voltage derived from a primary power source is provided to an SPD load by backbone wiring which carries a low AC or DC voltage derived from the primary power source, and a conversion stage which converts the low voltage to an AC driving voltage which is then supplied to the SPD load.
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