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Old April 26th, 2013, 12:18 AM   #1
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Join Date: Dec 2010
Location: New Zealand, Rapaura (near Blenheim)
Posts: 433
AC Powered LEDs

This example of an AC supplied LED clock is really about the effect of mains power frequency and stills photography, but I thought it interesting, and something that could easily affect video. Shooting high frame rates for slow mo for instance. I imagine that mains powered LED video lighting is, at the very least, rectified, and most probably, smoothed into a reasonably clean DC power supply.

Looking at the video again, I see it is a 'spinning' LED clock. I don't know if the effect is unique to this type of display or any AC fed LED.
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