Unverified85% confidenceDecision RuleTime unknown
调光方式优先选DC直流恒流调光或高频PWM（＞3125Hz），低频PWM调光（尤其调暗时）会产生肉眼难察觉的频闪，是低价灯的隐藏坑
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85%
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Long-term
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Unverified调光方式优先选DC直流调光或高频PWM（≥3125Hz），避免低频PWM调光；低频PWM在肉眼不可见的情况下仍会造成视疲劳累积93% similarUnverified带DC调光或PWM高频调光（≥1250Hz以上或标注无频闪）的灯泡才能护眼，低价灯泡低亮度时用低频PWM，调暗后频闪明显加剧91% similarUnverified调光方式优先选无频闪（DC调光或高频PWM＞3000Hz），低频PWM在低亮度下频闪严重，长时间近距离使用易致眼疲劳91% similarUnverified调光方式分PWM（脉宽调制）和DC（直流）两种，低频PWM在低亮度下可能产生频闪，对光敏感人群应选DC调光或高频PWM产品90% similarUnverified选择DC调光（直流恒流）而非PWM低频调光的夜灯，低频PWM调光在低亮度下频闪明显，长期对婴儿视觉发育不利，认准标注'无频闪'或'DC调光'88% similar
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