Wear goggles when working with LEDs.

Discussion in 'General Electronics Chat' started by jaygatsby, Feb 20, 2013.

  1. jaygatsby

    Thread Starter New Member

    Nov 23, 2011
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    I'm sure glad I did...
    [​IMG]
     
  2. tshuck

    Well-Known Member

    Oct 18, 2012
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    ...and that's why you should always use a current-limiting resistor:p....
     
  3. timescope

    Member

    Dec 14, 2011
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    You need goggles because you did not put a current limiting resistor in series with the led.

    Timescope
     
  4. jaygatsby

    Thread Starter New Member

    Nov 23, 2011
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    The bus was connected to a current source
     
  5. tshuck

    Well-Known Member

    Oct 18, 2012
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    To be clear, this was a constant current source at what current?
     
  6. jaygatsby

    Thread Starter New Member

    Nov 23, 2011
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    Constant as long as I didn't change it... it was illuminated for a little bit then I decided to crank it to max to watch the fireworks.
     
  7. tshuck

    Well-Known Member

    Oct 18, 2012
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    Well there's the problem: you're a pyro!:p

    EDIT: So, the title should probably read, "Wear Goggles when attempting to explode a LED"!
     
  8. bug13

    Well-Known Member

    Feb 13, 2012
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    how much current did you pump through??
     
  9. #12

    Expert

    Nov 30, 2010
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    I get nostalgic when I hear the familiar crackle of exploding thermoplastic.:D
     
  10. jaygatsby

    Thread Starter New Member

    Nov 23, 2011
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    I dunno exactly but I bet it was up around an amp.
     
  11. jaygatsby

    Thread Starter New Member

    Nov 23, 2011
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    Maybe I'll reverse bias a bunch of caps and put them with LEDs on the bus, I wonder if my canon camera has good enough res to make it into slow motion...
     
  12. edwardholmes91

    Member

    Feb 25, 2013
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    This reminds me of a video that there is on YouTube.. someone discharges a bank of capacitors, charged to in excess of 200V using a diode. Of course in one direction no current flowed and everything was okay, but when he connected it in the other direction the rating on the diode was far too low and it exploded! The guy then said "ouch" or similar and then commented that goggles might of been a good idea!
     
  13. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
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    or the idiots on youtube with a large capacitor bank blowing up watermelons
     
  14. PackratKing

    Well-Known Member

    Jul 13, 2008
    850
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    Precicely why we need to be careful who we pass knowledge to, counting all the absolute fools out there...
     
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