With the transformation of the power system, the high-frequency switching power supply has been used, so that it is better and more innovative and development space. Under the premise of high-frequency switching power supply to understand the development trend of high-frequency switching power supply, let us first First familiar with the principle of high frequency switching power supply. With the transformation of the power system, the high-frequency switching power supply has been used, so that it is better and more innovative and development space. Under the premise of high-frequency switching power supply to understand the development trend of high-frequency switching power supply, let us first First familiar with the principle of high frequency switching power supply.
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The first section of the high-frequency switching power supply circuit principle The high-frequency switching power supply consists of the following parts:
First, the whole process of the main circuit from the AC grid input, DC output, including:
1. Input filter: Its function is to filter the clutter existing in the power grid, and also hinder the clutter generated by the machine from being fed back to the public power grid.
2. Rectification and filtering: The AC power supply of the power grid is directly rectified into a smoother DC power for the next level of transformation.
3. Inverter: The rectified DC power is changed into high frequency AC power, which is the core part of the high frequency switching power supply. The higher the frequency, the smaller the ratio of volume, weight and output power.
4. Output rectification and filtering: Provide stable and reliable DC power supply according to load requirements.
Second, the control circuit samples from the output side, compares with the set standard, and then controls the inverter to change its frequency or pulse width to achieve stable output. On the other hand, according to the data provided by the test circuit, it is protected. Circuit identification, providing control circuit to carry out various protection measures for the whole machine.
Third, the detection circuit provides various display instrument data in addition to various parameters that are being operated in the protection circuit.
4. The auxiliary power supply provides different power requirements for all single circuits.
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Nanjing Genshine Bio-technology Co., Ltd , http://www.genshine-bio.com