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analog dim
Another popular dimming technique is analog dimming. By using this technique the output current is controlled by an external reference voltage (usually between 0 and 10 volts). The main advantages of this technique are: easy interaction with existing lighting controllers (0 to 10 volts), extremely high linearity, and no interference with cameras or moving objects. The main disadvantage is that the LED color can change at very low currents.
PTM Published on: 2011-11-03