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/44/1154919075.gif');}" onmousewheel="return imgzoom(this);">各位DX帮忙分析下,怎么3842输出波形会是如此怪异呢?
做的是反激式电源,功率12w,输出12v,在测试3842驱动波形时,满载和空载都没有问题,单就在0.7A左右0.05的负载下,出现此种驱动波形,各位大侠帮忙分析下,为何问题只会出现在该点呢?调试了很久都没有得到好的结果.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/44/1154919075.gif');}" 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/44/1154919075.gif');}" onmousewheel="return imgzoom(this);">