System and method for power-efficient charging and discharging of a capacitive load from a single source
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United States of America Patent
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Jan 25, 2011
Grant Date -
N/A
app pub date -
Jan 21, 2005
filing date -
Apr 22, 1994
priority date (Note) -
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Abstract
A system and method for efficiently charging and discharging a capacitive load from a single voltage source. The system includes a first switch for selectively connecting the voltage source to the load and a second switch for selectively providing a short across the load as may be common in the art. A particularly novel aspect of the invention resides in the provision of plural capacitive elements and a switching mechanism for selectively connecting each of the capacitive elements to the load whereby the load is gradually charged or discharged. In the illustrative embodiment, the switching mechanism includes a set of switches for selectively connecting each of the capacitive elements to the capacitive load and a switch control mechanism for selectively activating the switches.
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