无风幻化:
谢谢,请看一下图吧.想问问清楚.图上+15V与GND是PWM信号的辅助源;VCC和GROUND是驱动的辅助源.GROUND同时也为半桥地.S1是半桥中点.这图有问题不?[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/72/2767741229426199.gif');}"onmousewheel="returnimgzoom(this);">