| Summary: | 碩士 === 國立臺灣師範大學 === 應用電子科技學系 === 102 === This thesis studies the characteristics of LED linear dimming using Peak Current Control (PCC) and Hysteretic Current Control (HCC) methods. It provides the results of the luminosity control capabilities of LEDs and the effects of LED luminosity by changing the input/output DC voltage. According to the results of the experiments and theories, the circuit for LED driver for Peak Current Control (PCC) is simpler, but the range of its linear dimming is smaller. Additionally, the capability of LED current control with PCC is worse compared to HCC. The range of linear dimming is wider for the LED driver using Hysteretic Current Control (HCC). Moreover, its capability of LED current control for the change of input and output voltage is better than PCC.
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