Power supply for LEDs
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United States of America Patent
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-
Jun 10, 2003
Grant Date -
Nov 28, 2002
app pub date -
May 25, 2001
filing date -
May 25, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
The power supply for LEDs of the present invention provides power to a variable number of LEDs wired in series or in parallel. The power supply uses current feedback to adjust power to the LEDs and provides protection against open circuits and circuit malfunctions. A current controller compares sensed current to a reference current and generates a feedback signal, which is processed by a power factor corrector to adjust the current flow through the transformer supplying current to the LEDs.
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