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/77/3289991241943546.jpg?x-oss-process=image/watermark,g_center,image_YXJ0aWNsZS9wdWJsaWMvd2F0ZXJtYXJrLnBuZz94LW9zcy1wcm9jZXNzPWltYWdlL3Jlc2l6ZSxQXzQwCg,t_20');}" onmousewheel="return imgzoom(this);">
如图,据说这里C7是动态补偿的,它的值一般取多少,有什么公式可依吗
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PC817输出集电极需要偏压吗,
发射和集电极一般都怎么接到COMP 、Vcs
另外
comp 与Vcs 间的反馈,如图_RC,如何得来
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问得有点碎,有点多,请谅解
