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/46/1161242268.gif');}" onmousewheel="return imgzoom(this);">用SG3524作逆变器
用SG3524作逆变器时,不能稳压,何故,谢高手指教.以下图为例,当断开反馈电压时,空载有260V,带100W电灯炮有200V,灯炮发光正常,当接上反馈电压时,空载有260V,带100W电灯炮有200V,灯炮发光正常,如不接反馈一样,请高手分析并指教,谢谢
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/46/1161242268.gif');}" onmousewheel="return imgzoom(this);">
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