What do you know about indoor LED downlight?

Led downlight refers to the ceiling lighting with LED as the light source. It is a typical modern school lighting without main light and fixed scale. It can be placed around the ceiling or on the top of furniture, or in the wall, skirt or skirting line, which can create rich levels and colorful visual effects. Led downlight will be the first new generation of lighting lamps to replace the traditional lighting. It is not only energy-saving and environmental protection, but also has a long life and high light efficiency. In the future, it will quickly enter the field of general lighting and cause new changes.

1. Reverse voltage VRM of LED downlight: the maximum allowable reverse voltage. Beyond this value, led downlight may be damaged by breakdown.

2. Voltage of LED downlight: what we usually say is the positive voltage of LED ceiling lamp, that is to say, the positive pole of LED is connected with the positive pole of power supply, and the negative pole is connected with the negative pole of power supply. The voltage is related to the color, and the voltage of red, yellow and yellow green is between 1.8-2.4v. The voltage of white, blue and green is 3.0-3.6v. There may be some differences in the voltage of the same batch of LEDs, which shall be subject to the voltage provided by the manufacturer. When the external temperature rises, VF will drop.

3. Color temperature of LED downlight: expressed by absolute temperature K, that is, a standard blackbody is heated, and the color starts to change from dark red light red orange white blue when the temperature rises to a certain degree. When the color of a light source is the same as that of blackbody, we call the absolute temperature of the light source at that time.

4. Color of LED downlight: the color of LED is a very important indicator, which must be indicated for each LED downlight product. At present, the color of LED mainly includes red, green, blue, cyan, yellow, white, warm white, amber and other colors. This parameter must not be forgotten when we design and receive orders (especially for beginners). Because of different colors, the relevant parameters are also very large Changes.

5. Led downlight current: the forward limit (if) current of LED is mostly 20mA, and the light decay current of LED cannot be greater than if / 3, about 15mA and 18ma.. the luminous intensity of LED is only proportional to if in a certain range, when if > 20mA, the brightness enhancement can not be separated by inner eye. Therefore, it is reasonable to select the working current of led around 17-19ma.