There are 3 common types of dimmable LED drivers on the market: Triac, 0/1-10V and DALI dimmable drivers. Below is an introduction to their working principles and advantages.

(1) Triac dimmable driver

Triac dimming includes constant voltage and constant current modes, supporting leading-edge and trailing-edge dimming. It cuts the waveform of input voltage via conduction angle phase cutting to generate a chopped output voltage waveform. This phase-cut method reduces the effective value of the dimmer’s output voltage and lowers power for ordinary resistive loads. Triac dimming delivers high efficiency and stable performance.