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Thread: Big W LEDs

  1. #11
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    Default Re: Big W LEDs

    That would be a great help Mate

    Cheers
    Ken

  2. #12
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    Dec 2008
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    Default Re: Big W LEDs

    Quote Originally Posted by Tabor View Post
    The 120 counts in the bag are very dim with 24Vdc as well, supply them with 24Vac through a 180ohm resistor and they are perfect.

    To supply them with DC use around 33Vdc.

    If you guys are interested I can video the Leds on my window frames to night and post it. May give you an idea of colour and brightness level.
    Cheers thanks for that, i was also thinking i needed a higher dc supply. I haven't bought my SSR's yet so looks like AC is what i'm using.

  3. #13
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    Default Re: Big W LEDs

    Thanks for the heads up on the 120 count LED strings - I finally got to Big W yesterday and bought some of the icicles to experiment with.

    I'm impressed by their brightness and found that they illuminate well using a supply of 29VDC, where each individual string of 10 leds appears to be drawing about 10mA (based on the fact there are 6 strings of 10 series connected LEDs in parallel, drawing a total of 60mA - there are two sets of these, providing the total of 120 LEDs).

    I'm not sure that they should to be driven much harder than this, as the sleeve in the packaging indicates the 'bulbs' are rated at 3V, .03W which theoretically means they are rating them at 10mA.

    Powering them with 30VDC raises the average LED current to about 15mA - I haven't driven them any higher than that and would question their lifespan at the previously suggested 33VDC (although they appear to have a 24VAC transformer in the starter kit, providing a peak voltage of just under 34V, this peak only occurs momentarily and my experiments indicate that using 34VDC might cause too much current to flow through the LEDs).

  4. #14
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    Default Re: Big W LEDs

    I too got down to Big-W on the weekend to have a look at these new connectable lights. They will be perfect for what i want as i'm not using the power pack and 8 function controller.
    I'm also glad there are more colours this year and if there not long enough just plug another set in.
    I did notice that they are frosted led's this year not clear, so will need to grab a set to check if they match my previous years ones.

    My 20A 24vdc power supplies have a voltage adjust trim pot on them so i cranked them up to their max which was around 29vdc and perfect. looks like i will be staying with dc supplies now.
    Last edited by uziman; 11-15-2009 at 09:55 PM.

  5. #15
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    Default Re: Big W LEDs

    Sweet. i too purchased some of the single colour Fairy lights in the plastic bags.
    I ran mine off 36Vdc with a current limiting resistor. They are quite good.
    I couldn't see an current limiting resistor built into the strings.
    Hope Red LEDs don't burn out.

    Matt
    [B][I]Matt[/I][/B]

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  6. #16
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    Default Re: Big W LEDs

    I've been monitoring this post for nearly a week and just now realized that Big-W wasn't referring to Walmart.

    Man I'm dense!
    [COLOR="#A52A2A"][FONT=Arial Black][SIZE=3][B]Dark Yard again for 2017 [/B][/SIZE][/FONT][/COLOR]
    [COLOR="#008000"][SIZE=2] Still searching for more Time and Money[/SIZE][/COLOR]
    [COLOR="BLUE"][URL="https://www.facebook.com/KentuckyChristmas"]Display Facebook Page[/URL][/COLOR]

  7. #17
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    Default Re: Big W LEDs

    Big-W stands for wait for it um "Big W"

    Sorry no wally marts here in Australia. Although I an sure I have meet some of our local mart.
    [B][I]Matt[/I][/B]

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  8. #18
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    Question Re: Big W LEDs

    Quote Originally Posted by Matt_Edwards View Post
    Sweet. i too purchased some of the single colour Fairy lights in the plastic bags.
    I ran mine off 36Vdc with a current limiting resistor. They are quite good.
    I couldn't see an current limiting resistor built into the strings.
    Hope Red LEDs don't burn out.

    Matt
    Matt

    Whats a current limiting resistor and what size (l think l'll need to put one on the bridge rectifier)

    could the resistor be in the starter kit
    4 ren 64's
    Pretty sure thats enough

  9. #19
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    Default Re: Big W LEDs

    Are you cutting the strings down to smaller lots?
    My set up was, 12 strings in parallel 15ma per string - 36VDC supply
    For 120 Red LEDs I used 120R 5W resistor
    For 120 Green & Blue LEDs I used 2x 10R 1/2W resistor in Series


    Cheers
    Matt
    [B][I]Matt[/I][/B]

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  10. #20
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    Default Re: Big W LEDs

    l'm keeping mine @ the 120 length, will this make a difference
    4 ren 64's
    Pretty sure thats enough

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