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/78/3081901245473308.gif');}" onmousewheel="return imgzoom(this);">IR1150无桥PFC 电流取样,这个电路可行否
这是我的一个想法,用运放半桥整流电路来做大功率无桥PFC,以减少取样电阻的功耗.大家看一下可行否.
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