Light Reading Types of LED Dimming

November 26, 2014

There are two main types of dimming that can be used with LED light sources. These are TRIAC (Triode for Alternating Current) dimming and 0-10 Volt dimming.

TRIAC dimming relies on adjustable timing of power at the start of each AC half cycle, which alters the voltage waveform to dim a light source. TRIAC dimming is almost instantaneous and wastes very little power.

0-10 V dimming utilizes a DC voltage that varies from 0 V to 10 V to dim a light source. 0-10 V dimming typically runs at a low current with little voltage drop.