500) {this.resized=true; this.width=500; this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/69/2452941222146289.gif');}" onmousewheel="return imgzoom(this);">逆变电源波形
朋友送来一12V TO 110V 350W的故障逆变,电路是3525--1对60N06经检查1对60N06烧坏,3525正常,更换了一对3205,(手头没有60N06),结果是带100W都发热,查变压器输出波形,不对头,如下:--请各大侠分析哈,什么原因造成:上升过冲上沿呈正玄波状震荡,逐步衰减至平滑．
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500) {this.resized=true; this.width=500; this.alt='这是一张缩略图，点击可放大。\n按住CTRL，滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/69/2452941222146289.gif');}" onmousewheel="return imgzoom(this);">