随着高性能微机和计算机的广泛应用,由电源引起的故障也随着增加,因此,不间断电源(Uninterruptible PowsSystem,以下称UPS)日益被人们所重视。近几年来,国外的UPS 正在向体积小、性能高、噪声低、使用方便等规格系列化发展,特别是在逆变器中使用了MOS 功率场效应管(MOS FET),使得各方面性能都有改善。我们国内主要是大功率逆变器件和高容量密封电池不过关,但近两年,中国电子进出口总公司华南分公司已从美国国际电源机器公司 With the widespread use of high-performance computers and computers, the number of failures caused by the power supply also increases. Therefore, Uninterruptible Powsystem (UPS) is increasingly valued. In recent years, foreign UPS is to the small size, high performance, low noise, easy to use and other specifications of the series development, especially in the inverter MOS power FET (MOS FET), making all aspects of performance has improved. Our country is mainly high-power inverter devices and high-capacity sealed batteries, however, but the past two years, China Electronics Import and Export Corporation South China Branch from the United States International Power Machinery Corporation