12V烧LM555.
昨天我搭的电路.5V的后电流300MA,到了9V,还烧了LM555.这是为什么啊?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/45/1157077430.gif');}" onmousewheel="return imgzoom(this);">