Laser diode help

Discussion in 'General Electronics Chat' started by Peter basolo, Dec 27, 2014.

  1. Peter basolo

    Thread Starter Member

    Nov 24, 2014
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    So I built my own laser reset me with double a batteries as those were my most accessible source of power and though I have the optimal current/voltage it only seems to be about 1/10 of what the diode is rated for (it's rated for 150 mW). The driver board and I am usingas has a potentiometer but once I get it to its brightest and turn it a little farther it just shuts off which is strange but I'm just assuming that's how this particular board work it's made by aixizI know it's a good board but I cannot see the being nor does any electrical tape burden or match light so therefore leave meet you to think that Waze or a burning around 15 mill lots and 30 mW which is obviously a lot less than I bought the diode for so was wondering if you had any input as to what I should do or if buying a lithium polymer battery would be my only option. The diodes Automall current/voltage is i'll hundred and 120 mA/6 V. The diode can run safely at 160 mA but dies out around 180 the seller said. So thanks for reading this horribly long posts and I appreciate your input. :)
     
  2. shteii01

    AAC Fanatic!

    Feb 19, 2010
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    Links to datasheets.
     
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  3. Peter basolo

    Thread Starter Member

    Nov 24, 2014
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    There isn't anything here?
     
  4. ian field

    Distinguished Member

    Oct 27, 2012
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    A laser diode should be powered by constant current - if you've fed it from a potentiometer and cranked it up till it goes off again; its probably toast!

    150mW isn't trivial for a set of AA cells - you might have dodged the bullet if the terminal voltage collapsed because of the cells internal resistance.
     
  5. Peter basolo

    Thread Starter Member

    Nov 24, 2014
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    What would you recommend for a portable power supply?
     
  6. ian field

    Distinguished Member

    Oct 27, 2012
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    What voltage headroom available?
     
  7. Peter basolo

    Thread Starter Member

    Nov 24, 2014
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    I contacted the seller of the diet Road in though the optimal voltage is six he suggested a 9 V battery.
     
  8. ian field

    Distinguished Member

    Oct 27, 2012
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    Most 9V batteries are layer type with very low energy density.
     
  9. Peter basolo

    Thread Starter Member

    Nov 24, 2014
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    How is this a problem?
     
  10. ian field

    Distinguished Member

    Oct 27, 2012
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    The battery will only last a few minutes.
     
  11. Peter basolo

    Thread Starter Member

    Nov 24, 2014
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    They have that Low of capacity? Or just burn out.
     
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