The switchboard part is a kind of power supply, the modern electrical technology is used to control the switching on and off principle and to maintain a stable output voltage. It consists mainly of two parts: the power level and the control level. The main task of the power level is the selection of different topological structures according to different applications and requirements and, at the same time, consideration of the design costs of the transistor unit; the main task of the control position is to select the corresponding control mode according to the electrical signal of the circuit, and the power supply is mostly controlled by PWM.<br>The development of the switching of electricity supply towards integration is the most important trend in the future. The power density will increase and the process requirements will increase. Without new breakthroughs in semiconductor elements and magnetic materials, significant technological progress is difficult to achieve. At the heart of technological innovation is the question of how to improve efficiency and reduce the weight of switching power supply, which is why the technological level will play an increasingly important role in electricity generation.<br>
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