stonego:
传个图看看.这才是功率因数接近100%的图嘛.正弦电压&脉冲电流,PF会是1!!!!!!!!这玩笑可有意思了.[图片]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){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/63/17461206031314.jpg');}"onmousewheel="returnimgzoom(this);">