小林子：
已经做出来了,可电流波形不太对,如图,有个负的电流呀,有负一百多安,比正电流还大,改过变压器绕法,没用.请问各位,这个电流哪来呢?输入24v,输出350伏,500W.变压器是PQ5050[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/39/1143126796.jpg');}"onmousewheel="returnimgzoom(this);">[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/39/1143126839.jpg');}"onmousewheel="returnimgzoom(this);">