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A Study of the Stable Colors Variation Circuit of High Brightness LEDs  

Yu, Yong-Su (전남대 공대 전기공학과)
Song, Sang-Bin (전남대 공대 전기공학과)
Yeo, In-Seon (전남대 공대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers C / v.51, no.8, 2002 , pp. 390-396 More about this Journal
Abstract
This paper Presents to choose number of RGB LED through optical special quality analysis of RGB LED samples and to produce ratio of RGB LED for a stable color variation and white light. Also, it is to design of a simple switching circuit using some resistances and switching transistors that is able to operate each 16 RGB LED stably, and switching control circuit base on a microcontroller that would be suitable for colors variation patterns control more than about 64 patterns and colors variation more than about 100,000 colors using ON/OFF and Duty control.
Keywords
Color variation circuit; High brightness LED; PWM control; Microcontroller;
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