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Thermal Resistance Management for Power LED Thermal Design

  • 2013-09-22
  • 990.88KB
  • Points it Requires : 2

  As we all know, the luminous properties of LEDs are closely related to their operating conditions. The forward current applied to the LED is the main influencing factor, and the higher the current, the more luminous flux the LED produces. Unfortunately, LEDs are driven by a constant current source, and when the temperature of the LED rises, its light output will drop sharply. Figure 1 shows the effect of common basic LED parameters on the output spectrum. In addition, this figure also shows that the efficiency and luminous color of the LED will also shift at the peak wavelength.

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