Is it safe...?

  X™ 17:07 25 Aug 2006

Would it be safe to wire a 12v light to a PC, using maybe a USB cable or would it burn out the PSU? I've looked over it, a 450W PSU and a 50w or less bulb. What do you think?

  ACOLYTE 17:10 25 Aug 2006

You dont want to know what i think lol,i wouldnt do it but thats me,as for is it safe i dunno,i dunno even if your USB port would power a 12v bulb let alone a 50watt one.

  X™ 17:14 25 Aug 2006

USB gives out 12v I checked, I'll check again on a different one. I could test it on an old PC.

  ACOLYTE 17:17 25 Aug 2006

Well my USB ports give 500mA per port,i dont know what that converts to in volts it may be 12v i have no clue.

  alan2273 17:19 25 Aug 2006

USB might give out 12v but the amperage is miniscule, so if you connect a lamp to it you will probably wreck the USB ports and possibly the motherboard with it.

  coolkid2 17:20 25 Aug 2006

no it doesnt - it gives out 5v

  X™ 17:23 25 Aug 2006

And I might even put it on a HDD/Optical Drive power lead.

  ACOLYTE 17:25 25 Aug 2006

I think you should buy a torch and leave the pc alone,you may end up breaking the whole lot for an experiment.

  alan2273 17:27 25 Aug 2006

I forgot to say that the amperage drawn from a 12v/50w is 4.33amps so no way will it work.

  Stuartli 17:33 25 Aug 2006

Try the tech support link at:

click here

An alternative might be the small light fittings available for laptops that run off a USB port. See:

click here

click here

  Fruit Bat /\0/\ 17:34 25 Aug 2006

Is it safe...?


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