如何把波形变为另外一个波形

如下面图片所示,是同一个镇流器上的波形,只是输入电压不相同,(负载为36*3)
如何把图1变成图2的波形?在图2波形中损耗仅5W,但到图1波形就达8W,
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/66/86701214537572.jpg?x-oss-process=image/watermark,g_center,image_YXJ0aWNsZS9wdWJsaWMvd2F0ZXJtYXJrLnBuZz94LW9zcy1wcm9jZXNzPWltYWdlL3Jlc2l6ZSxQXzQwCg,t_20');}" onmousewheel="return imgzoom(this);"> 图1
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如何把图1波形调试成图2波形?请高手指点.