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DiY LEDs - How to Power Them

Discussion in 'LED and other Lighting' started by SupraSPL, Feb 22, 2014.


    Dopaw13 Well-Known Member

    yeah i was just going to use different drivers but after i saw a few of Growmau5 you tube vids i think i am trying to get to advanced with it but if i am going to do it i wana do it right
    Abiqua likes this.

    bleak Member

    Hi! I'm working on a new setup and have a Meanwell APV-12-12 to power 2 CPU fans.

    What is the best (meaning safest and most reliable) way to connect the APV-12-12 to the mains? I have some AC adapters laying around, but I don't know if they're suitable. Could someone more knowledgeable let me know if any of these adapters will work?

    1. Motorola adapter - output 3.6v 600mA
    2. Achme adapter - output 5v 3.0A
    3. Nokia adapter - output 5.3v 500mA
    The Dawg

    The Dawg Well-Known Member

    No Adapters Are Needed. Just Use A 2 Wire Power Cord From An Old Lamp :hump:
    bleak and Dopaw13 like this.

    bleak Member

    Thanks Dawg! If I use a normal 2-wire power cord, I'm aware I need to be careful, as it'll be carrying the full power from the mains (220 volt in my country)

    Is there a safety advantage to using an AC adapter? In other words, if I'm stupid enough to somehow zap myself - Won't the AC adapter just give me a 'slap on the wrist' in comparison to the 2-wire power cord which could kill me?

    GBAUTO Active Member

    The APV is the same thing as the AC adapters you have. It converts AC line voltage to 12VDC rather than the 3~5V the smaller adapters output. The only additional hazard is that you need to direct wire it to a plug or bus bar rather than plugging it into an outlet.
    bleak likes this.

    bleak Member

    Thanks Gbauto, that makes total sense. I'll be careful connecting the APV-12-12 to mains power!

    Delta-9Pyromaniac Well-Known Member

    HydroRed likes this.

    HydroRed Well-Known Member


    Delta-9Pyromaniac Well-Known Member

    I don't understand. can you please explain

    HydroRed Well-Known Member

    Specs shows them as running off of AC 220V. Thats quite the electrical supply for a 50W led light (advertised 500-999 lumens).

    ANC Well-Known Member

    At least the LED drivers are more efficient at 220V

    HydroRed Well-Known Member

    True, but I cant see using up a 220V source for a 50W led light. Seems absurd. I have a single 220V source on my property and its for a 5000W heater.

    ANC Well-Known Member

    Voltage doesn't mean shit without current.
    5000W heater at 220V is 23A (would be 46A on 110V requiring seriously thick wire.
    Voltage is only the potential, power is potential times current.
    SO the only difference is, on the mains side, 220V draws half the current 110V does.

    HydroRed Well-Known Member

    So would you eat up a 220V recepticle for one of those 50W led lights he put a link up for? Thats the point I was making. Like I said...absurd.

    ANC Well-Known Member

    If he isn't doing something else with the outlet, why not, it makes no difference in the power consumed.

    I live in the 220V world, have things like 3W LED bulbs connected to it.

    TheHero Member

    If a required voltage is 220V, it probably takes all amps it can run it at full, so if its 50w, it is going to eat 0.2 amps from wall.
    Bacis electrics. voltage(V) x amps(A) = power (watts). And from this You can understand that this LED has 1100 ohm resistance. I = U/R

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