How to connect led??

[ElectronicsR]

Hello guys,
i need some help for how to connect 8w or more watt led like 9x3 chip smd led to power supply like 12V or 24V how??
in simple circular or oval through hole we use 120Ohm series resistance in this what to do??

 

[Colin Mitchell]

Provide more information about the 8 watt LED you are using.

 

[ElectronicsR]

it is smd yellow color aluminium heat sink ~8Watt

 

[Colin Mitchell]

What is the voltage specified for the device.

 

[ElectronicsR]

don't know it was working at 12V adapter