Analysis of Basic Composition and Detection Points of LED Light Bar Switching Power Supply

LED light bar switching power supply is generally composed of LED diode, IGBT and MOSFET. It is controlled by a circuit to control the switching tube for high-speed switching and cut-off, converting DC power into high-frequency alternating current to transform the converter to generate one or more sets of voltages required, and the switching power supply can be roughly divided into Isolation and non-isolation are two types of isolated switching power converters. Without isolation, there is no need to have a switching power converter. Compared with the traditional DC power supply, the switching power supply has the advantages of small size, light weight, and high efficiency.

LED light bar switching power supply has a circuit to control the switching tube for high-speed switching and cut-off, which converts direct current into high-frequency alternating current to transform the converter to generate one or more sets of voltages required. The reason for converting to high-frequency alternating current is that the efficiency of high-frequency alternating current in the transformer circuit is higher than that of the commercial power supply of 50Hz or 60Hz. Therefore, the switching power supply transformer can achieve a small volume, and it will not be very hot when the switching power supply is working. Compared with the power frequency DC power supply, if the 50Hz or 60Hz is not changed to high frequency, then the switching power supply has no meaning. The switching power supply can be roughly divided into two types: isolated and non-isolated. The power converter, without isolation, does not necessarily have a switching power converter. Compared with the traditional DC power supply, the switching power supply has the advantages of small size, light weight, and high efficiency.