张文侠老先生发表过WE417/5842单管前级制作 [转帖]

wjm1828

求张文侠老先生在网上发表过WE417/5842单管前级制作电路图及印刷电路板图 .
有人知道吗?

Julien

QQ：83590941
msnnlygodmad@msn.com

zhang3

有qq或者msn吗？
想向您请教一些关于前级增益方面的问题。。
先谢谢了！
[em11]

Julien

可能我还有不对的地方需要大家帮忙指出

zhang3

[em11]

Julien

难道不觉得第一个图反馈量随着音量在改变，输出阻抗和输入阻抗还有增益都受到了影响。第二个图的比较环节电流流过基准电源，稳压性能也是不好。

这图照做当然可以用。

zhang3

上面2图的问题说在吗？
谢谢！！

Julien

<img src="attachments/dvbbs/2005-2/20052211285022.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/2005-2/20052211285022.gif\');}" onmousewheel="return imgzoom(this);" alt="" />

Julien

<img src="attachments/dvbbs/2005-2/200522112529342.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/2005-2/200522112529342.gif\');}" onmousewheel="return imgzoom(this);" alt="" />
<img src="attachments/dvbbs/2005-2/200522112547113.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/2005-2/200522112547113.gif\');}" onmousewheel="return imgzoom(this);" alt="" />
<img src="attachments/dvbbs/2005-2/200522112612726.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/2005-2/200522112612726.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

Julien