How do I power 1 watt leds, can these not be hooked up straight to a power source with an appropriate resistor?
I have on ebay a number of cheap 1 watt leds, please see the pictures below. Some look like large LEDs with perhaps thicker then normal anode and cathode leads coming out of them, others look like they are surface mounted onto a circular, flower shaped circuit board with possible multiple soldering point to apply power. I am hoping to power 24 of the 1 watt LEDs off a modified computer power supply (I use these for powering everything that needs a bit more amperage). LEDs are Forward Voltage: 3.2V~3.4V Forward current: 350mA. In some of these adds they refer to them also being able to supply the driver, is this a term for a power supply? I was planning on running it off the power supplies 5v out with an appropriate resistor. The all share the same forward current, while the forward voltage varies from 300mA to 350 mA. Can I treat these as regular LEDs, mind you they will get quite hot I assume, or am I missing something?