• on Audio/Video/Photography
  • Published in issue 1/2006 on page 0
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Christmas Tree Lighting with LEDs

Design Tip

Christmas Tree Lighting with LEDs
This design for a Christmas tree lighting system employs ten red light emitting diodes (LEDs) instead of the usual lamps. The LEDs are powered at a constant current from a 20-volts source. The current source is the familiar LM317T integrated voltage regulator.
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