Three-color dimmable LED bulbs (also called tri-color or tunable white bulbs) allow users to switch between different color temperatures (CCT) and adjust brightness levels. These bulbs are popular for their versatility in home, office, and commercial lighting. But how exactly do they work? This. TRIAC stands for Triode for Alternating Current, specifically an AC three-terminal bidirectional thyristor. It is a semiconductor device capable of conducting current during both phases of an AC cycle (positive and negative half-cycles), making it particularly suitable for dimming and speed control. 👉 All fixtures labeled “3000–6000K Adjustable Light” in our store are 3-color changing models (color temperature switching, not brightness dimming). 👉 If you need brightness dimming, please inform our customer service or leave a note: “Need Triac dimming.
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