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Light-emitting diodes are being widely used due to their efficient use of power. The applications for power LEDs include traffic lights, street lamps, automotive lighting, architectural lights, household light replacements, signage lighting (replacing neon strip lights and fluorescent tubes), and many more. Powering (driving) these LED's is not always simple. Linear driving is inefficient and generates far too much heat. With a switching supply, the main issues are EMI and efficiency, and of course cost. The problem is to get a design that meets legal requirements and is efficient,

Light emitting diodes --- Electric power supplies to apparatus. --- Power supply. --- Power supplies to apparatus, Electric --- Electric power --- LEDs (Light emitting diodes) --- Diodes, Semiconductor --- Electroluminescent devices --- LED lamps --- Light-emitting electrochemical cells --- Engineering --- General and Others