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  1. #1
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    Default Powering a strip of 12v LEDs??

    Wasn't sure what section to stick this in so thought it would get more attention here. I have got 2 strips of 12V LEDs coming from hong kong to light my room. They have a positive and negative wire. Do I only need a 12V power supply to plug it into my mains?

    Couldn't think how was the best way to power them, I want the strips on my walls then to have them powered by a mains plug socket, wasn't sure what adapter/transformer etc was required.

    Cheers


  2. #2
    DF VIP Member coin-op's Avatar
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    Default Re: Powering a strip of 12v LEDs??

    If they do in fact run off 12V a 12V power supply will be all you need. Just ensure that it is rared to power them - should be, after all LEDs are fairly low power devices.
    Cheers - Coin-Op


  3. #3
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    Default Re: Powering a strip of 12v LEDs??

    Well here they are:
    http://cgi.ebay.co.uk/ws/eBayISAPI.d...3092&rd=1&rd=1

    Says operating off 12v.

    Cheers for confirming mate, K+


  4. #4
    DF VIP Member whatnow's Avatar
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    Default Re: Powering a strip of 12v LEDs??

    are you making some sorta sexy landing strip? hehe
    I'm new to this :huh:

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    DF VIP Member Deadly's Avatar
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    Default Re: Powering a strip of 12v LEDs??

    Yep, just a 12v supply

  6. #6
    DF Super Moderator
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    Default Re: Powering a strip of 12v LEDs??

    Quote Originally Posted by whatnow View Post
    are you making some sorta sexy landing strip? hehe
    Well kind of... I am lining the tops, bottoms, and maybe even corners of my walls (or some of them) in them hoping ot make them look really good I am also using special spraypaint to make a mural on the wall as a headboard to my bed so the UV should make it look very different when on from when under normal light.

    Yes i know, I'm weird...


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    DF MaSter goggles's Avatar
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    Default Re: Powering a strip of 12v LEDs??

    Have a look at this web site about led`s it will put you right.
    If the link is disallowed please delete.........h**p://www.luxeonstar.com/

  8. #8
    DF VIP Member Wizzo's Avatar
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    Default Re: Powering a strip of 12v LEDs??

    I've installed LED's up the sides of stairs, xbox and LED's on the decking around my pond. The decking LED's are on a remote control outside socket (20 quid from B&Q) Buying them seperate gives you a lot more scope especially if your a bit handy with a soldering iron and a router. Solder the correct size resistor to the positive leg of every LED for over current protection and basically the worlds your oyster.

    I get all my LED's from this bloke http://stores.ebay.co.uk/phenoptix

    Good selection of different colours, supplies the resistors you'll need and all for the right money and fast delivery.

    ... and no ... I don't know him, not related to him and never met him

  9. #9
    DF VIP Member Wizzo's Avatar
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    Default Re: Powering a strip of 12v LEDs??

    Quote Originally Posted by evilsatan View Post
    Well kind of... I am lining the tops, bottoms, and maybe even corners of my walls (or some of them) in them hoping ot make them look really good I am also using special spraypaint to make a mural on the wall as a headboard to my bed so the UV should make it look very different when on from when under normal light.

    Yes i know, I'm weird...

    Have a good think where you are going to install them. These LED's are high intensity and as the name suggests... fooking bright!.. they can damage your eyesight if your daft enought to stare at them for long enough but what I'm really getting at is don't install them up a wall or around the edge of the ceiling if its gonna be in your line of sight for the telly or when your havin a meal cause it will just annoy the bollox out of you.

  10. #10
    DF Super Moderator
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    Default Re: Powering a strip of 12v LEDs??

    Quote Originally Posted by Wizzo View Post
    Have a good think where you are going to install them. These LED's are high intensity and as the name suggests... fooking bright!.. they can damage your eyesight if your daft enought to stare at them for long enough but what I'm really getting at is don't install them up a wall or around the edge of the ceiling if its gonna be in your line of sight for the telly or when your havin a meal cause it will just annoy the bollox out of you.
    They will only be turned on occasionally as a effect rather than being used to light the room permanently. Cheers for the advice and site, K+ for both of you.


  11. #11
    DF VIP Member MajorFU's Avatar
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    Default Re: Powering a strip of 12v LEDs??

    well in theory connectin 20 of them in series should work straight off the mains and no psu would be required

    if u want to test it on 12v 1st then an old scalectrix or model railway transformer will do or even a spare car battery

  12. #12
    DF Super Moderator
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    Default Re: Powering a strip of 12v LEDs??

    Quote Originally Posted by MajorFU View Post
    well in theory connectin 20 of them in series should work straight off the mains and no psu would be required

    if u want to test it on 12v 1st then an old scalectrix or model railway transformer will do or even a spare car battery

    Cheers for that mate, I have loads of 12V supplies and car batteries at some of my families because of their occupation

    Will test it then maybe try wiring to a plug...


  13. #13
    DF VIP Member bmuk's Avatar
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    Default Re: Powering a strip of 12v LEDs??

    i'm not a sparky but wouldn't the current in a 12v car battery melt the contacts and then proceed to blow the hell out of the diode?

    b

  14. #14
    DF Super Moderator
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    Default Re: Powering a strip of 12v LEDs??

    Don't think so mate, I have placed a cold cathodes contacts on a bare 12v car battery, although they might have had a transformer in between :s


  15. #15
    DF VIP Member coin-op's Avatar
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    Default Re: Powering a strip of 12v LEDs??

    Quote Originally Posted by bmuk View Post
    i'm not a sparky but wouldn't the current in a 12v car battery melt the contacts and then proceed to blow the hell out of the diode?

    b
    If it says 12V supply it will have the current limiting resistors in the strip somewhere.
    As for running 20 of the mains, the mains is AC and they need DC. Can't remember how LEDs handle that, but I don't recall it being too clever for them.
    Cheers - Coin-Op


  16. #16
    DF VIP Member bmuk's Avatar
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    Default Re: Powering a strip of 12v LEDs??

    my bad, i presumed you meant the following:



    gcse electronics getting the better of me lol

  17. #17
    DF Super Moderator
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    Default Re: Powering a strip of 12v LEDs??

    All lol, screw directly placing a single LED on a 12V battery!!


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