Differential driving circuit for powering a light source
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United States of America Patent
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-
Apr 3, 2012
Grant Date -
Jun 16, 2011
app pub date -
Oct 29, 2010
filing date -
Oct 29, 2010
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A differential driving circuit for powering a light source is disclosed. The differential driving circuit includes a first set of switches and a second set of switches. A first current from a power source flows through the first set of switches to charge a first energy storage element when the first set of switches are turned on. A second current from the first energy storage element flows through the second set of switches to power the light source when the second set of switches are turned on. The differential driving circuit further includes a second energy storage element coupled to the light source in parallel and for providing a differential voltage to the light source.
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