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/80/114701249908543.gif');}" onmousewheel="return imgzoom(this);">高压钠灯点火电路
在网上搜索到一个高压钠灯点火电路,想试一试,担不知R1、R2、R3、C1、C2、的参数如何,SCR选哪种型号.DB3导通电压典型值才32V,点火后,如何实现自关断?
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