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A comment on Ask HN: Why is coil whine in electronics so prevalent?. Parent comment

Re:Ask HN: Why is coil whine in electronics so prevalent? by bodhi_mind on Sunday November 06, 2022 @06:28PM (#33498772)
I get this effect when using a dimmed led headlamp in the rain. I can see the rain drop fall in discrete steps.
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Re:Ask HN: Why is coil whine in electronics so prevalent? by jrockway on Sunday November 06, 2022 @06:51PM (#33499030)
I've definitely noticed that with my bike light. You don't notice the flickering normally, but rain makes it looks like you're playing a video game at 3fps. (I think I measured the flicker and the PWM frequency was like 400Hz, which is not quite as bad as 3fps.)
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