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2.2V 8-10A Power Supply?

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LAN_403

loneoceans

Sun Oct 02 2011, 09:18PM

Registered Member #4098 Joined: Fri Sept 16 2011, 09:26PM
Location:
Posts: 236

Hi everyone,

I have a really powerful red LED which takes in 8 to 10A at 2.2V. I need some suggestions for the best way to make a small power supply for it. I happen to have an ATX PSU around so I can use it. Does anyone have better suggestions than simply sticking a big resistor in series? Or maybe convert a 12V 5A supply to 2.2V at higher current?

Thanks!

Microwatt

Mon Oct 03 2011, 05:08AM

Registered Member #3282 Joined: Wed Oct 06 2010, 05:01PM
Location:
Posts: 224

You might be able to use the 3.3 voltage off of the ATX. my next guess would be to wind your own buck converter.

Pinky's Brain

Mon Oct 03 2011, 03:13PM

Registered Member #2901 Joined: Thu Jun 03 2010, 01:25PM
Location:
Posts: 837

Only switching power supplies are moddable without just adding a resistor to burn the excess voltage ... small plug type switching power supplies do exist (something like this) but I've never seen the inside of one ... dunno if they are easy to mod.

A buck converter is reasonably simple though, you could just add that to an ordinary power supply.

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