LED machine light LED machine work lights proof LED work lights LED lights

1: LED lamp comprising a number of one to ten or more LED chips, they are usually connected in series. The emission luminance of each chip is determined by the magnitude of the current therethrough. As a result of the series connection, each of the LED chip inside the bulb automatically by the same current, the voltage on each chip but not the same. LED forward voltage drop of typically 3.4V, but changes between 2.8V to 4.2V. LED can be classified in order to limit the voltage fluctuation range, but it will increase the cost, and the forward voltage drop will vary with changes in temperature and time. To provide consistent light output, LED lamps must be driven by a constant current power efficient stringent requirements. As an alternative to the incandescent lamp LED lights, the power must be integrated in the lamp housing. 2: A typical LED lamp includes a driver integrated circuit, LED cluster, and can also provide mechanical and thermal protection for the driver and the housing of the LED chip. 3: LED driver requirements are very stringent. It must be energy efficient and must meet stringent specifications of EMI and power factor, and can safely withstand a variety of fault conditions. One of the most difficult one of the requirements is to have a dimming function. Because there is a mismatch between the characteristics of the LED lights and designed specifically for incandescent dimming controller, can easily lead to poor performance. Problem may appear to be slow to start flashing, uneven illumination, or when adjusting the brightness flicker. In addition, there is also inconsistent performance of each unit and the LED lights emit audible noise and other issues. These negative cases are usually triggered by false or premature shutdown controller and LED current control caused by improper factors. In the current, LED product claims and the actual life of a larger gap. In limited driver circuit design technology accumulation, the product life assessment methods used to measure the actual life, likely to cause errors. The stability of the drive line will directly affect the overall stability of the product. Distributed constant current technology and high reliability reasons that make part of the AC power to continue to follow the traditional switching power supply, power supply constant voltage mode. LED switching power supply design technology accumulation will create quality conditions. Under the same power supply specifications, do not develop new power model, power can be backward compatible, greatly reducing power specifications, improve power unity.