Step-up converter for light-emitting diodes (LEDs)
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United States of America Patent
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Sep 9, 2014
Grant Date -
Nov 17, 2011
app pub date -
May 12, 2011
filing date -
May 12, 2010
priority date (Note) -
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Abstract
The present invention relates to a circuit for controlling at least one LED and to a light- and/or signal element including said circuit, wherein the circuit facilitates an optimum utilization of any input voltage provided by an energy source and provides constant light intensity of the LEDs independent from an input voltage. For this purpose, the circuit contains a step-up converter arranged in the circuit in a way such that the step-up converter outputs a voltage adapted to a forward voltage of the at least one LED at a constant current independent from an input voltage provided by the energy source.
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