Unverified85% confidenceDecision RuleTime unknown
无频闪要认准通过IEEE 1789标准的'无危害'等级（豁免级），或看RG0蓝光豁免认证；宣传语'DC恒流驱动'比'PWM调光'更能避免低频频闪
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Unverified无频闪应以IEEE PAR1789标准的『无光危害等级/豁免级』为准，标称『DC恒流驱动』比『高频PWM调光』更彻底无频闪，低亮度调光时PWM频闪风险更高91% similarUnverified无频闪要看'无危害频闪'认证（波动深度符合IEEE PAR1789标准），普通LED驱动在低亮度调光时频闪反而加剧，PWM调光台灯低档位易频闪，DC恒流调光更安全87% similarUnverified频闪判断认准'无可视频闪'并要求提供IEEE PAR1789豁免级或exempt级检测报告，PWM调光的低价灯在低亮度档位往往频闪严重84% similarUnverified'无频闪'需看是否通过频闪豁免（波动深度<8%）或过IEEE 1789无频闪标准，很多低价灯用PWM调光在低亮度时频闪明显84% similarUnverified无频闪需看RG0豁免级（IEC/TR 62778光生物安全）+ 无可视频闪认证，普通PWM调光在低亮度档位仍可能有频闪，直流恒流调光（DC调光）更稳定84% similar
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