HIGH-EFFICIENCY, DUAL CURRENT SINK LASER DIODE DRIVER
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United States of America Patent
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app pub date -
Mar 25, 2015
filing date -
Aug 23, 2011
priority date (Note) -
Abandoned
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Abstract
Provided are assemblies and processes for activating light emitting devices. A first current sink is in electrical communication with a common source through a current node and configured to draw a first current through the current node in response to a respective control signal. A second current sink is also provided in electrical communication with the current node and in parallel with the first current sink, also configured to draw a second current through the current node in response to a respective control signal. An aggregate current is drawn through the array, determined as a combination of the first and second currents. A commanded current from the first current sink can be shunted around the second array and the second current sink, providing a capability to series both the first and second laser diode light-emitting arrays, while simultaneously drawing different current amplitudes through each array from a common potential source.
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