输入55V,输出24V 700MA,7个3WLED串联,为什么我的电压加到20V时,输出电流0.20A,但是继续加电压,灯的亮度就变了,输出电流减小了,输入电流减小到0.03A了,输出电压变化到18.6V左右,求解释啊!
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输入55V,输出24V 700MA,7个3WLED串联,为什么我的电压加到20V时,输出电流0.20A,但是继续加电压,灯的亮度就变了,输出电流减小了,输入电流减小到0.03A了,输出电压变化到18.6V左右,求解释啊!