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- W2041104224 abstract "A new LED lamp driving technology with a charge pump instead of a conventional DC-DC converter is proposed. The proposed driving technology is used to control the LED lamp with digital dimming. The power loss in the zener diodes is reduced because the charging process of the capacitors is selectively controlled according to the digital control signal. From the experimental results, when dimming four LED lamps simultaneously, the average driving circuit efficiency of 89% is obtained, regardless of the dimming level. White light with color temperature over a range of 2800∼7200K was produced by dimming control of red, green, blue and amber LED lamps with the proposed driving circuit. The characteristics of the driving circuits can be changed depending on the characteristics of the R, G, B, and A LED lamps. The efficiency of the driving circuits up to a maximum 89% can also be obtained depending on the combination of LED lamps. The driving technology with digital dimming control for LED lamps proposed in this paper would be effective for obtaining high efficiency in LED driving circuits and remote control of LED lamps using digital communications." @default.
- W2041104224 created "2016-06-24" @default.
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- W2041104224 date "2013-09-30" @default.
- W2041104224 modified "2023-09-27" @default.
- W2041104224 title "Driving Method for Dimming of LED Lamps using Selectively Charged Charge Pump" @default.
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- W2041104224 doi "https://doi.org/10.5207/jieie.2013.27.9.015" @default.
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