Currently，Switching power supply in small、Lightweight and high efficiency is widely used in various terminal devices that are dominated by electronic computers.、Almost all electronic devices such as communication equipment，It is an indispensable power supply for rapid development of electronic information industry today.。Currently, a bipolar BALMUDA中国在那修 transistor is made of a double pole transistor in the switching power supply sold in the market.100kHz、useMOS-FETPrepared500kHzpower supply，Although BALMUDA台灯维修网点 it is practical，But its frequency needs to be further improved。To increase switching frequency，Reduce switch loss，To reduce switch loss，High-speed 巴慕达烤箱常见问题 switching metaders。however，After the switch speed is improved，Surge or noise is produced by distributed inductance and capacitance or diode in the circuit.。such，Not only will affect the surrounding electronic equipment，It will greatly reduce the reliability of the power supply itself.。among them，To prevent it from getting off-Closed voltage surge，Can be usedR-CorL-Cbuffer，Magnetic buffers made from unsatisfactory magnetic cores such as electrospheric waves caused by diode storage charges。but，Correct1MHzAbove high frequency，To use a resonant circuit，To make the voltage on the switch or through the current of the switch in sine wave，This reduces switch loss，At the same time, you can also control BALMUDA净化器维修网点 the occurrence of surges.。This type of switching is called a resonant switch。At present, the research on this switching power supply is very BALMUDA手冲壶故障代码 active.，Because this approach does not require a large increase in switching speed, you can reduce the switching damage to zero.，And noise is also small，It is expected to be a main way for high frequency of switching power supplies.。current，Many countries in the world are committed to countingHzResearch on the practical research of the converter。
