The application of LEDs in lighting fixtures is becomin […]
The application of LEDs in lighting fixtures is becoming more and more extensive, and the uniqueness of being superior to traditional lighting methods, in addition to improving the quality of life, improving the efficiency of light sources and extending the life of lamps, use its unique dimming function for color temperature and brightness of lights Changes, and fully achieve energy-saving applications as its greatest advantage.
The dimming performance of LED lighting fixtures depends on the matching LED light source and driving power. Generally speaking, LED light sources can be simply divided into two categories: individual LED diode light sources or LED diode light sources equipped with resistors. In application, sometimes the LED light source is designed as a module containing a DC-DC converter , Such a complex module is beyond the scope of this article. If the LED light source or module is a separate LED diode itself, the common dimming method is to adjust the amplitude of the LED input current. Therefore, the selection of the LED drive power should refer to this feature. The characteristic of the HLG / ELG family of MEAN WELL is that the current can be It can be adjusted by external 1-10VDC * or 10V PWM pulse width modulation or even by simply connecting a simple variable resistor to control the output current modulation. And another type of LED diode light source with resistors (commonly known as LED strip or LED STRIP), LED strips are widely used with a series resistance of LED diodes, so the voltage is relatively stable, so users can use it Any fixed voltage power supply on the market is available to drive the LED light bar. The common LED light bar is generally driven by 12VDC or 24VDC, but it may also be a little difficult in the dimming application of the LED light bar.
