A LED lamp special power input, rated Voltage 220VAC + 15%, input rated current 0. 7A output voltage DC24V + 0.5V, output current dc4.2a, with 1.5 meters of light strip 24V (42 patch LED), can bring a few? Online, etc.
1, contrast the power of the advantages and disadvantages can not only contrast the power mark W number, depending on the actual load of power supply; electronic material selection; transformer is aluminum transformer.2, it is recommended that customers have a certain understanding of lighting knowledge, you can configure their own testing tools, testing the actual power of each batch of lights, matching more economical and practical power supply.Professional manufacturers of power links: LED switching power, Shenzhen switching power supply, switching power supply, rainproof power supply
Customers in the purchase use lights, to when 14.4W/ M: if you want to wear 30 meters with light, power will be 30 meters with lights * 14.4W=432W, customers will choose the 450W power, but because the market is a lot of 7.92W/ meters with lights, 30 meters is 30*7.92=237.6W, the production of virtual standard power the manufacturer will seize this point, 240W power deficiency 450W. In this way, the actual user is using the 450W power priceBuy is actually 240W power.For example: 450W virtual standard power supply is 80~85 yuan / Taiwan, RC full power 240W is 73 yuan / Taiwan, in fact, RC power supply reliability, higher load, the price is more moderate.
Currently on the market led why some easy to burn out1, some manufacturers themselves are cottage factories, there is no engineering and technical personnel. Just buy other manufacturers of lights to bring back copies, other manufacturers with the current limiting resistor on the band is too large, but also with what the current limiting resistor. It is not known that the current in each batch of the LED chip is different, and each batch should change the current resistance according to the current of the actual LED chip. Thus, the current limiting resistor is not current enough, which leads to the possibility that some of the lamp belts are easy to burn out.2, the use of light belt customers do not know the actual power of each band, random power distribution, and the lamp belt is often in the state of light, power supply is insufficient, and eventually led to the band burned.3, another reason: some manufacturers to deceive consumers: the power transformer copper clad aluminum, aluminum for cooling effect than copper transformer, the power supply is switched on, the power may be a time to reach, but electricity for a long time, power decreases, load can not afford lamp with the power, the lamp will be burned with, or burning power.
The same circuit LED lamp band, but the power and LED quality is different, why?1, LED lights with the initial launch, because the price of space is relatively large, light manufacturers are using current consistency, high brightness LED chip, such chips current is: 0.02A;Later, because of the price of the lamp, the market competition is fierce, many lamps manufacturers use LED chips which are not high brightness and the current is not consistent. The current of this kind of LED chip is 0.011A.2, so we to the most commonly used 5050 chip as an example, a bulb to calculate power:If the LED chip is good quality: single chip current is 0.02A, then the current one lamp is 0.02A * 3=0.06A.If the LED chip is the poor quality of the single chip current is 0.011A, then the current one lamp is 0.011A * 3=0.033A.3 now, let's calculate the power of three for a setGood quality chip: 12V * 0.06A=0.72W, 1 meters of light with 60 beads composed of 20 groups, 1 meters power is 0.72W*20=14.4WThe poor quality of the chip: 12V * 0.033A=0.396W, 1 meters of light with 60 beads composed of 20 groups, 1 meters power is 0.396W*20=7.92W
