狠狠干狠狠操-久青草视频-天堂网站-欧美日韩亚洲综合-黄色三级av-成人欧美在线-综合久久av-欧美人与禽zozzozzo-国产黄色高清视频-97影音-亚洲视频图片小说-国产 欧美 自拍-毛片的网站-天天干人人-欧美黄色免费在线观看-亚洲香蕉中文网-99热这里只有精品5-这里只有精品免费视频-看国产一级片-中国女人av

One of the parameters of an isolated DC-DC converter is the range of the input voltage over which the converter can operate. For the industry-standard “bricks” available for the nominal 48V input telecom marketplace, this range is usually 36V to 75V, or a ratio of about 2:1 from the highest to the lowest value. But there are many applications where a converter that can handle a much wider range of input voltage variation is desirable. For instance, in some systems the distributed input voltage has significant transients and surges that last too long to be removed by a filter.