Hi, i have buy 3 led luxeon k2 with this caracteristic : 3.72-3.85 Volt range 1000mA-1500mA and 100-130 lumen dipends by the voltage input.
I want to made a flashlight with this 3 led , the battery pack i think is 6 Volt or 12 Volt
wich is the formula for calculate the resistor Ohm and Watt ??
Thanks Fabrizio
I want to made a flashlight with this 3 led , the battery pack i think is 6 Volt or 12 Volt
wich is the formula for calculate the resistor Ohm and Watt ??
Thanks Fabrizio
