Vibrating traffic signal controller?

Discussion in 'Off-Topic' started by spinnaker, Nov 6, 2011.

  1. spinnaker

    Thread Starter AAC Fanatic!

    Oct 29, 2009
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    A few weeks ago I was off on one of my bicycle tours. This one went through a small town in NW Pennsylvania. A really quaint little town called Franklin, PA.

    I had stopped in town for the night at a nice B&B and went off exploring.

    They seemed to have a fairly modern traffic control signal system with the new LED lighting.

    I walked by on control box and it was vibrating like crazy. I sounded like it was about to shake right off of the poll.

    With a modern system what could be vibrating? I would expect few if any relays in a newer system so what could be causing all of that shaing?
     
  2. gerty

    AAC Fanatic!

    Aug 30, 2007
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    Cooling fan maybe? Lmination hum in transformer?
     
  3. spinnaker

    Thread Starter AAC Fanatic!

    Oct 29, 2009
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    It was way more than a hum. That baby was actually jumping around!
     
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