When the lamp needs to be dimmed by the triac signal, the input voltage waveform in the circuit deviates from the sine wave due to the change of the triac conduction angle, which changes the effective value of the input voltage, and the dimming is realized by changing the voltage.

During the triac turn-on process, a switch in the triac potentiometer can adjust the voltage divider ratio of the internal resistance, change its conduction angle, and change the effective value of the output voltage, thereby realizing the dimming function.

Triac dimming technology has a long history of development and mature and stable technology. SMARTS' triac dimmable driver has been perfectly combined with incandescent lamps and halogen lamps, occupying a large dimming market.

Using SMARTS 30-300 triac dimmable power supply with triac dimming technology, it is relatively simple to match the installation and use, only need to replace the led lamps. Triac dimmers are widely used in traditional lighting markets such as incandescent lamps. They are in line with people's usage habits, have low dimming costs, are compatible with existing circuits, and do not need to re-wiring.