Design of LED Driving SMPS for Large Traffic Signal Lamp

대형 교통신호용 LED 구동 SMPS 설계

  • 신현용 (남서울대학교 전자공학과)
  • Received : 2009.04.06
  • Accepted : 2009.05.07
  • Published : 2009.06.30

Abstract

In this study, SMPS to drive LED traffic signal light for the railroad and airport was designed and its electrical characteristics was measured. The output voltage, output current and its power efficiencies to the input voltage 8~12VAC and 8~16VDC were 6VDC, 1.85ADC and >70%, respectively. Also the power factors of the SMPS were above 0.75 in the AC input voltage range.

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