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Thread: Help - Actually Hate the P3 Driver...

  1. #1
    Join Date
    Dec 2006
    Location
    Essex, UK
    Posts
    8,648

    Default Help - Actually Hate the P3 Driver...

    everytime i come to use one of these drivers i have nothing but problems with the fucking red light!

    as you can tell im getting the fucking hump.

    dont know what to say really, ive wired it up as normal.

    4x 445 diodes wired in series, all diodes are working 100%

    interlock connected

    12v input

    tried two different drivers to make sure its not the driver

    have used one driver to power 4x 445 diodes before so i know it works. although they were wired in parallel

    as soon as i connect power i get 4 faint blue lights then straight off as red light comes on.

    if i wack the input voltage up to 17v i get a bright burst of blue light before the red light comes straight on. so thats how i know all diodes are working



    Eat Sleep Lase Repeat

  2. #2
    Join Date
    Jun 2010
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    Zweibrücken, Germany
    Posts
    605

    Default

    12V is not enough to drive 4 diodes in series with a voltage drop on each diode of up to 4.8V each. You would need 24V to be on the safe side.

  3. #3
    Join Date
    Dec 2006
    Location
    Essex, UK
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    Default

    ok thnks back to parallel i go
    Eat Sleep Lase Repeat

  4. #4
    Join Date
    Dec 2007
    Location
    Nottingham, UK
    Posts
    2,845

    Default

    Con,
    Sometimes you're a massive chop.

    - There is no such word as "can't" -
    - 60% of the time it works every time -

  5. #5
    Join Date
    Jan 2007
    Location
    Sheepsville, Wales, UK
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    3,406

    Default

    Quote Originally Posted by danielbriggs View Post
    Con,
    Sometimes you're a massive chop.

    Ill second that!

    Con,
    Sometimes you're a massive chop

    Rob
    If you need to ask the question 'whats so good about a laser' - you won't understand the answer.
    -----------------------------------------------------------------------------------------------
    Laserists do it by the nanometre.

    Stanwax Laser is a Corporate Member of Ilda

    Stanwax Laser main distributor of First Contact in UK - like us on Facebook http://www.facebook.com/FirstContactPolymerCleaner
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  6. #6
    Join Date
    Dec 2006
    Location
    Essex, UK
    Posts
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    Default

    ill third it for being rubbish with electronics.

    im a chop!
    Eat Sleep Lase Repeat

  7. #7
    Join Date
    Jan 2007
    Location
    Yorkshire, UK
    Posts
    4,585

    Default

    Quote Originally Posted by andy_con View Post
    ill third it for being rubbish with electronics.
    Nah... I've claimed that title... If there was a king of being rubbish with electronics it would just have to be me
    Quote: "There is a theory which states that if ever, for any reason, anyone discovers what exactly the Universe is for and why it is here it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another that states that this has already happened.”... Douglas Adams 1952 - 2001

  8. #8
    Join Date
    Jun 2010
    Location
    Australia
    Posts
    3,734

    Default

    Con, your a whiz with the mill, but put down the soldering iron and nobody will get hurt.
    This space for rent.

  9. #9
    Join Date
    Oct 2006
    Location
    Cleveland, Ohio
    Posts
    2,342

    Default

    Don't hate the thing that's protecting your diodes from... yourself

    24V is probably overkill, but if you can give it a solid 18 and don't over-driver them you'll be ok. With series diodes, you should connect a 0.1uF cap across each diode.

    However, parallel with a 5.5V PSU is a very good way to go.

  10. #10
    Join Date
    Oct 2010
    Location
    Athens, Greece
    Posts
    1,930

    Default

    is the cap necessary for all diodes wired in series andrew, or just the blue ones?
    "its called character briggs..."

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