求3W LED开关电源驱动线路

黄师父

给一个。<img src="attachments/dvbbs/2005-8/200582210421613350.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-8/200582210421613350.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><br>其输出电压值可通过改变R4、R5电阻值来进行调整，其输出电压符合以下公式：Vout=(1+R4/R5)*1.25V

[此贴子已经被作者于2005-8-22 10:42:57编辑过]

compess

好东西。。。