电源占空比及波形分析求助

请高手帮忙分析一下,这几个波形正常不,如何看占空比,还有如何看纹波,在示波器里面看到的波形如何算,如何看,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/64/1590711207476116.gif');}" onmousewheel="return imgzoom(this);">这是220V时的D极波形.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/64/1590711207476147.gif');}" onmousewheel="return imgzoom(this);">这是S极检测电阻的波形,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/64/1590711207476192.gif');}" onmousewheel="return imgzoom(this);">这个波形怎么怪怪得,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/64/1590711207476235.gif');}" onmousewheel="return imgzoom(this);">大家都帮忙看看这几个波形都分析工作在什么状态,