Can't figure out the "leading edge" and "trailing edge" of Triac dimming?

Every link of decoration is very cumbersome. Friends who have decorated should have a deep understanding of it. In order to save manpower, material resources and time costs, everyone will tend to prefer simpler decoration solutions, especially in the dimming transformation link. The emergence of Triac dimming solutions has simplified the steps of intelligent transformation of home lighting, because Triac dimming is compatible with old lamps, does not require large-scale line changes, and can meet basic dimming needs, which is very economical.

What is Triac dimming?

Triac dimming technology is a technology that controls the brightness of lights by adjusting the voltage waveform. According to the position of the trigger pulse in the AC waveform, Triac dimming is divided into two modes: leading edge dimming and trailing edge dimming, which are suitable for home lighting, commercial lighting and other scenes.

Leading edge dimming controls brightness by adjusting the leading edge phase of the AC waveform

Triac leading edge dimming uses a Triac circuit. Starting from AC phase 0, the input voltage is chopped until the Triac is turned on, and then there is voltage input. That is, the leading-edge dimming of Triac adopts the leading-edge conduction and the natural shut-off method of crossing the zero point to dim the light.

Trailing-edge dimming realizes brightness control by adjusting the closing angle

The trailing-edge dimming of Triac adopts a triode circuit, and the dimmer chops the input voltage waveform. It starts to shut down from one phase and starts to conduct at 180 degrees.

The difference between the leading-edge dimming of Triac and the trailing-edge dimming of Triac

After discussing the Triac dimming technology, let's talk about the Triac dimming power supply. Because Triac dimming technology has been around for a long time and has been widely used, the product quality of Triac dimming power supply has also been strictly considered in the fierce market competition.

As a professional LED driver power supply manufacturer, SuretronTriac dimming power supply stands out with its high compatibility and low cost, and has been favored by many home decoration and commercial lighting renovation projects.

Highly compatible Triac driver power supply

We all know that drivers with poor compatibility are prone to noise and dimming flickering, which greatly affects the dimming effect. In response to this application pain point, SuretronTriac series supports leading edge phase cutting/trailing edge phase cutting dimming, and is compatible with mainstream brand dimming systems on the market: Lutron, Leviton, Crestron, etc., which is convenient and flexible, reducing the difficulty of engineering construction.

Smooth dimming and flicker-free Triac driver power supply

SuretronTriac driver power supply has a smooth and delicate dimming effect, which can achieve deep dimming, and the dimming is soft, without flicker and jitter.

Low-cost Triac driver power supply

The driver power supply of SuretronTriac series does not need to re-wire the signal line, which is low cost and easy to construct, meeting the cost control requirements of the renovation project.

In particular, SuretronTriac constant current dimming power supply can adjust the output current by dialing the code, helping suppliers to free up the crowded warehouse and reduce stocking costs.

High-efficiency Triac driver power supply

The PF value of SuretronTriac constant current series is as high as 0.95, which effectively improves the utilization rate of electric energy, reduces harmonic pollution, improves the power transmission efficiency and power quality of the power grid, and achieves energy saving and consumption reduction.

Triac driver power supply that meets multi-national certification standards

UL/ENEC/FCC/CE/CB/SAA/RoHS