Led in the work needs a steady flow, voltage regulator components, but such elements should be with high own commitment to the pressure, but power to characteristics of small, otherwise would have a high efficiency LED because the drive circuit power consumption is too high and the efficiency of the overall system is greatly reduced, contrary to the purpose of energy saving and high efficiency. So should as far as possible not to use resistance or series voltage stabilizing circuit as the LED drive current limiting circuit, and should be the capacitors, inductors, and the active switch circuit, circuit, so as to ensure high efficiency of the LED system. Using tandem integrated constant power output circuit, can make the LED light output in a wide range of power to maintain a constant, but the general IC circuit will therefore make the efficiency decreased. The active switching circuit can be used to ensure that the power supply can be changed at a high conversion efficiency.
But with its unique strengths, in safety specially voltage (swimming pool, is zoned under water lamp, miner's lamp), work. In addition, the direct use of green power (solar, wind, etc.), as well as emergency lighting has its unique advantages. Especially in the aspect of dimming, LED can not only realize the 0~100% dimming, and can ensure that the whole dimming process to maintain high light efficiency, and does not damage the life of LED, while the gas discharge lamp is difficult to do this.