You can also eliminate flicker by not using PWM, and instead using a high switch... | Hacker News

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		Saris 9 months ago \| parent \| context \| favorite \| on: PWM flicker: Invisible light that's harming our he... You can also eliminate flicker by not using PWM, and instead using a high switching frequency DC power supply with a clean stable output current. Obviously it costs more, but I wish manufacturers would just do it.

davrosthedalek 9 months ago [–]

Conceptually, that's not far away from PWM + filter, except maybe for the closed loop.

Saris 9 months ago | [–]

Yeah that's true, LEDs do need a closed loop for current regulation in a high efficiency setup, so might as well use it for dimming too.

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