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上图害人,没做过,音质没保证,能不能相也没保证
无聊自己画的 6n3 Srpp 直耦6n6并管阴极输出。没做过,理论上是能用的。
对付32欧姆耳机应该勉强可以。
负反馈模仿上图的。
<img src="attachments/dvbbs/2005-6/2005622175549127.gif" 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/2005-6/2005622175549127.gif\');}" onmousewheel="return imgzoom(this);" alt="" />
电源:
用质量好点的220V50W隔离变压器做胆电源;
灯丝用交流供电 用6V变压器就可以了,至少20W,最好是30W,视变压器质量而定。
滤波电容用拆机的,很便宜,所以用大点。
<img src="attachments/dvbbs/2005-6/2005622174657736.gif" 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/2005-6/2005622174657736.gif\');}" onmousewheel="return imgzoom(this);" alt="" />
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