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/54/1452221181961116.bmp');}" onmousewheel="return imgzoom(this);">懂电源的请进,请教一下大家啊!!
毕设刚刚做了个电路板,用全桥逆变电路输出48V的电压,用示波器测出了波形.但测得的波形好像电压干扰很大,波形不是很好(下图).有没有人知道这是哪里出了问题,有没有什么解决办法呢??还有几天就答辩啦,望大家给点建议.谢谢大家啦!!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/54/1452221181961116.bmp');}" onmousewheel="return imgzoom(this);">
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/54/1452221181961116.bmp');}" onmousewheel="return imgzoom(this);">全部回复(10)
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@ln19841109
不好意思,现在把原理图穿上来,望大家指点阿!!
谢谢大家
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/54/1452221182241966.bmp');}" onmousewheel="return imgzoom(this);">
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/54/1452221182241966.bmp');}" onmousewheel="return imgzoom(this);"> 0
