Led Lens

        LED Driver:   refers to the power adjustment electronic device that drives the LED light emitting or LED module components to work normally. Due to the conduction characteristics of the LED PN junction, the voltage and current variation range of the power supply that it can adapt to is very narrow, and a slight deviation may not be able to light the LED or seriously reduce the luminous efficiency, or shorten the service life Kill or even burn the chip. The current power frequency power supply and common battery power supply are not suitable for direct supply of LED, LED driver is the electronic component that can drive LED to work in the best voltage or current state.

           Performance characteristics:                                                                                                            1. High reliability is especially like the drive power of LED street lights, installed at high                                            altitude, inconvenient maintenance, and large maintenance costs.
                                                 

                          2. High efficiency LED is an energy-saving product, and the efficiency of the driving                                                power supply is high. For power installation, the structure of the LED drive power                                                supply in the lamp is particularly important. Because the luminous efficiency of LED 
                              decreases with the increase of LED temperature, the heat dissipation of LED is very                                            important. The efficiency of  the power supply is high, and it consumes power Small,                                          the heat in the lamp is small, which reduces the temperature rise of the lamp. It is 
                              beneficial to delay the light decay of LED.

                         3. High power factor The power factor is the load requirement of the grid. Generally,                                               electrical appliances below 70 watts have no mandatory indicators. Although the low                                           power factor of a single electrical appliance with low power has little impact on the 
                             power grid, the same type of load is too concentrated at night, which will cause more                                          serious pollution to the power grid Dye. For 30 watts to 40 watts of LED drive power,                                          i t is said that in the near future, there may be certain indicators for power factors.
                                                                       

                        4. There are two driving methods: one is a constant voltage source for multiple                                                        constant current sources, each constant current source separately to each LED                                                  power supply. In this way, the combination is flexible, and the LED failure all the way                                          does not  affect the work of other leds, but the cost will be slightly higher. The other                                            is direct constant current power supply, LED series or Run in parallel. Its advantage                                            is that the cost is lower, but the flexibility is poor, but also to solve a LED failure,                                                 does  not affect  the operation of other LED problems. These two forms, for some                                               time, coexist. Multiple constant current output power supply mode, in terms of cost                                             and performance will be better. Maybe the mainstream side in the future
                                                                   

                      5. Surge protection LED anti-surge ability is relatively poor, especially anti-reverse                                                  voltage ability. Strengthening protection in this area is also important. Some LED                                                lights are  installed outdoors, such as LED street lights. Due to the initiation of the                                                grid  load  and the induction of lightning strikes, various surges will be invaded from                                            the grid system, and some surges will cause LED damage. Therefore, the LED driver                                          power supply should have the ability to inhibit the invasion of the surge and protect                                              the LED from being damaged.
                                                                     

                      6. In addition to the conventional protection function of the power supply, it is best to                                                increase the LED temperature negative feedback in the constant current output to                                              prevent the LED temperature from being too high.  Seven. In terms of protection, the                                          lamp is installed outside, the power structure should be waterproof, moisture-proof,                                            and the shell should be sun-fast.
                                                                     

                      7. The life of the drive power supply should be compatible with the life of the LED.
                                                                     

                      8. To meet the requirements of safety regulations and electromagnetic compatibility.                                                With the increasingly extensive application of LED, the performance of LED driver                                              power will be more and more suitable for LED requirements.