LED light array

Discussion in 'General Electronics Chat' started by electronewb, Nov 11, 2012.

  1. electronewb

    Thread Starter Member

    Apr 24, 2012
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    3
    I do camera work and I'm thinking about building an LED panel so I can light up the subject while I shoot I was thinking of using single LED lights until I found this 300 LED strip.http://www.ebay.ca/itm/5M-Black-PCB...809743?pt=US_Car_Lighting&hash=item19d69d368f

    Supply voltage would be 14VDC How many of those LEDs on the strip can I use before I start frying them?

    My idea would be to cut the strip and to use a project box with white or silver perforated board But how many
    LED's could withstand 14VDC??

    One more thing the supply for the strip is 12VDC @ 3A My supply is 14VDC would I need a voltage regulator?
     
    Last edited: Nov 11, 2012
  2. spinnaker

    AAC Fanatic!

    Oct 29, 2009
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    1,596
    Forget about the individual LEDs or even the strips. That is a lot of soldering and you can't be guaranteed you will get a batch of matching LEDs unless you buy a few thousand an sort them out.

    Look at something like one of these instead.

    http://dx.com/c/home-garden-1099/lightings-1045/led-light-bulbs-1072

    These bulbs have current limiting so you won't need to worry about building a buck regulator.
     
  3. electronewb

    Thread Starter Member

    Apr 24, 2012
    260
    3
  4. electronewb

    Thread Starter Member

    Apr 24, 2012
    260
    3
    Would the 14VDC supply be bad for the 12VDC that the strip needs to work
     
  5. spinnaker

    AAC Fanatic!

    Oct 29, 2009
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    1,596
    It's not the voltage you need to worry about (assuming you exceed the forward voltage of the led enough to light it), it is the current. If you connect a battery to the LEDs they will light but if current is not regulated then they won't last very long.

    I am not sure if those strips have current regulation or not. Form the looks of it, I would say no but then again I am just learning about these new products myself.
     
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