Hi, i was doing a science project on LEDs, and i needed to calculate optical output power versus input electrical power to find relative wall plug efficiency.(adsbygoogle = window.adsbygoogle || []).push({});

This is the only good formula i found

Optical output power of LED (watts) =Nlinearfactor × Voltage drop across resistor (volts)

Pout = N × Vres

What is N exactly? I do not know how to calculate optical output power as I dont know what help is. Id appreciate help a lot, thanks.

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# Optical Output power of LED

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