Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference (한국조명전기설비학회:학술대회논문집)
- 2003.11a
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- Pages.169-173
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- 2003
Characteristics of high-power RGB LEDs according to types of operating voltage
고출력 발광다이오드의 구동전압 유형에 따른 특성
Abstract
This paper analyzes the effects of various operating voltages on the electrical and light output characteristics of 20mW(5mm-Ф), 1W and 5W high-power RGB LEDs. Operating voltages of three types are compared on a simple LED circuit: DC, full-wave rectified DC. and square-wave DC. As a result, it is found that the 1W and 5W high-power LEDs should be provided with appropriate heat sinks that hold down the increase of junction temperature. As for the operating efficiency the case of full-wave rectification gives the highest value.
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