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摘要:
Light source carrying a high color rendering index (CRI) finds potential applications in people’s everyday life as well as lighting industry. Combination of multi-wavelength LED light sources with designated direct emission sources can achieve warm-white and cool-white light. A generic design of high CRI multi-wavelength light-emitting-diode (LED) light source, using flyback converter, pulse width modulation (PWM) voltage control, variable resistor, and timer, is proposed. The PWM pulse is for the voltage control of cascade LEDs, while variable resistor manipulates the current flowing through LEDs. A design of dimming drive with cascade-connected electronic switch is also proposed. By adjusting the width of the dimming signal, the average value of forward current pulse can be changed, and therefore the objective, the tuning of the amount of light output, can be fulfilled. The advantage of the proposed design is its short response time.
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文献信息
篇名 A High Color Rendering Index on Multichip LED Light Source
来源期刊 电路与系统(英文) 学科 医学
关键词 CRI PWM DIMMING LED FLYBACK CONVERTER
年,卷(期) 2012,(1) 所属期刊栏目
研究方向 页码范围 107-110
页数 4页 分类号 R73
字数 语种
DOI
五维指标
传播情况
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研究主题发展历程
节点文献
CRI
PWM
DIMMING
LED
FLYBACK
CONVERTER
研究起点
研究来源
研究分支
研究去脉
引文网络交叉学科
相关学者/机构
期刊影响力
电路与系统(英文)
月刊
2153-1285
武汉市江夏区汤逊湖北路38号光谷总部空间
出版文献量(篇)
286
总下载数(次)
0
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