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/29/1115059721.gif');}" onmousewheel="return imgzoom(this);">急求助:用单片机控制该步进电机时该用什么芯片去驱动好
我用的步进电机额定电压5v,一相间电阻为40欧,功率0.625v,考虑到反压及功率损失,驱动后功率应大于此值,该步进电机是两相四线的及两相四拍(A,/A和B,/B),请教各位,不知用什么芯片驱动好?
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/29/1115059721.gif');}" onmousewheel="return imgzoom(this);">
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/29/1115059721.gif');}" onmousewheel="return imgzoom(this);">