开关电源的发展外文翻译资料

开关电源的发展外文翻译资料(中文+英文共5000字)
目前，开关电源以小型、轻量和高效率的特点被广泛应用于电子计算机为主导的各种终端设备、通信设备等几乎所有的电子设备，是当今电子信息发展不可缺少的一种电源方式。目前市场上出售的开关电源种采用双极晶体管制成的100KHZ、用MOSFET制成的500KHZ电源，虽已使用化，但其频率有待进一步提高。要提高开关频率，就要减少开关损耗，而要减少开关损耗，就需要有高速开关元器件。然而，开关速度提高后，会受电路中分布电感和电容或二极管中存储电荷的影响而产生浪涌或噪声，这样，不仅会影响周围电子设备，还会大大降低电源本身的可靠性。其中，为防止随开关启闭所发生的电压浪涌，可采用R-C或L-C缓冲器，而对由二极管存储电荷所导致的电流浪涌可采用非晶态等磁芯的磁缓冲器

THE DEVELOPMENT OF SWITCHING POWER
At present, switching power supply to small, light weight and high efficiency characteristics are widely used in a variety of computer-driven devices, communications equipment, etc, Almost all the electronic equipment is the rapid development of today’s electronic information industry, an indispensable Power Source. Currently on the market the use of switching power bipolar transistors made of 100khz, 500khz with a power MOSFET made, Although practical, its frequency needs to be improved. The switching losses, it needs high-speed switching computers. However, the switching speed of the increase will be distributed by the circuit inductance and capacitance, or diode stored charge of the generated surge or noise. This will not only affect nearby electronic equipment, will greatly reduce the reliability of power supply itself. Which, with the switch to prevent Kai-closed by the voltage surge occurs, can use RC or LC buffer, while the stored charge from the diode can be used due to current surges such as core made of amorphous magnetic buffer.