Tell you how to choose LED lights: Look, want, search, […]
Tell you how to choose LED lights:
Look, want, search, touch. du
1. Look: Just look, what do you look at? Seeing glare is not dazzling. Do you have festival lights or fluorescent lamps at home? After lighting, you are looking at the LED lamp for a few times, then at the energy-saving lamp, and feel that the glare is not dazzling. If this lamp is more dazzling than the energy-saving lamp, then don’t buy it. The eyes cannot resist. . (When looking at it, change a few more angles, facing right, looking sideways, etc., it’s a good light if all parties are not dazzling)
2. To: What do you want? Find the manufacturer to request the following data:
(1): LED chip brand, capacitor, MOS, IC control chip, diode brand.
(2): "Electric light source test report" or "integral sphere graph" (as shown in the figure below) of the LED light source. When looking at the red mark, look at two parameters: display index Ra and luminous efficiency. The display index Ra>80 is required, while the luminous efficiency>100LM/W. Note that it is achieved at the same time, that is to say Ra>80, luminous efficiency>100lm/w, to be satisfied at the same time.
3. Search: What are you searching for? If you want to come to the chip brand and the capacitor brand, Baidu, you know, look at the reputation of this brand, how is the quality, and what grade.
4. Touch: Touch the temperature, the light is on for 20-30 minutes, touch the metal heat sink part of the light, if you hold it with your hand and can hold it for about 10 seconds, then the temperature is okay, if you hold it for a few seconds, you feel very hot , Can't resist, then there is a problem with the heat dissipation of this lamp, and the life is not guaranteed. It is best to have a thermometer. Measure it. If the temperature of the heat sink is about 60 degrees, it is dangerous if it is above 65 degrees.rechargeable LED flashlight