I do see a lot of 60 Hz Christmas lights, as best I can estimate the frequency, by its streak pattern in a saccade as compared with a known AC-synchronous light. (It would be an interesting party game to see who can guess closest to the correct flicker frequency of an LED.)
I'm curious, if I see an LED duty cycle well under 50%, does that suggest an active driver generating its own frequency (that I can rightly berate for not making it higher), or is that a likely signature of a passive rectification setup too?
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timeasmymeasure
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Date: 2011-07-19 07:48 am (UTC)I do see a lot of 60 Hz Christmas lights, as best I can estimate the frequency, by its streak pattern in a saccade as compared with a known AC-synchronous light. (It would be an interesting party game to see who can guess closest to the correct flicker frequency of an LED.)
I'm curious, if I see an LED duty cycle well under 50%, does that suggest an active driver generating its own frequency (that I can rightly berate for not making it higher), or is that a likely signature of a passive rectification setup too?