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Slow motion of fluorescent lamps rectifying

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Uploaded by on Sep 21, 2011

The very slight mismatch of the camera framerate to the 60Hz line frequency shows two old fluorescent lamps apparently rectifying, or very close to it. The time lapse effect shows the discharge much brighter when the power signal polarity switches to the better cathode. The two middle lamps are new and they go dim and bright equally.

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Science & Technology

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Standard YouTube License

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Uploader Comments (GFVagent007)

  • I take it all of these are running on high power

    factor rapid start ballasts? Looks like it... :)

  • @suzukir123 Yeah, old Advance Mark II 0.77A RS ballasts. They are high power factor. How do you tell from this vid?

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All Comments (3)

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  • I can kinda tell just by how bright these lamps

    are, and also by the noticeable striations taking

    place on that lower tube. I'm gonna also take

    a bet that these are all 34 watts. :)

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