要求 系统由单直流电3.5V~5V供电,输入电源电压在3.5V~5V变化时,LED电流变化≤1%±2mA;请教方案,我觉得问题关键在于供电电压的变化
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要求 系统由单直流电3.5V~5V供电,输入电源电压在3.5V~5V变化时,LED电流变化≤1%±2mA;请教方案,我觉得问题关键在于供电电压的变化