Method of driving LED chips of same power but different rated voltages and currents

摘要

A method of driving LED chip (80)s of same power but different rated voltages and currents includes the following steps: set a predetermined power; provide a LED chip (80) which has a rated power accordant to the predetermined power; measure the LED chip (80) to obtain a working current thereof while the LED chip (80) is operated; provides a driving current to the LED chip (80), and maintain the driving current the same as the working current.