我的TDA1543纪念版

seabreeze

焊接双面板时，好的焊锡（低熔点）能溶入金属化过孔浸润背面的焊盘。而焊盘表面不会堆这么多锡
[em11][em11][em11]

文招

吹咩[em06][em06][em06]

HQ

以下是引用文招在2005-8-13 10:42:00的发言：
我的1543没装集成座，原来的电解太大了，会压到散热板，放不下。你的只是理论罢[em11][em11][em11]我试过再说[em06][em06][em06]

可以装底下[em06][em11][em11]

文招

CS8412 22脚模拟用电源实测4.95V,所以我在那个100R的电阻上并了一个6K8的电阻,这样电源就上到5.2V了。
<img src="attachments/dvbbs/2005-8/200581310500524.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/2005-8/200581310500524.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />




运放电源部分5K微调并不装上，把1K5改1K3，这时电压实测17.4V。正负偏差0.2V，在可接受范围内。原来的二个5K微调位置我装了二个0.1uF的电容作加强退耦用<img src="attachments/dvbbs/2005-8/2005813105116596.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/2005-8/2005813105116596.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

文招

以下是引用小鬼头在2005-8-13 2:48:00的发言：
因为，高频电流的返回路径问题。。。。呵呵

我的1543没装集成座，原来的电解太大了，会压到散热板，放不下。你的只是理论罢[em11][em11][em11]我试过再说[em06][em06][em06]

明9002

深藏不露，一露就杀人啊~~~
NND。。。还P我说家里没好DD了。。。那些电容是啥？
NND。。。打。。。打。。。打。。。打劫！
严肃点。。。

andylei

土八路

[em09][em09][em09][em09][em11]

赤兔

退藕用bg的f16v，100u。
op是se5534，比627有味道点。
偶合用mmk，1u的。[em11]

lguofeng

cs8412焊的真漂亮

HQ

以下是引用文招在2005-8-13 1:45:00的发言：
焊好CS8412后，其余的就可全部装完了。
<img src="attachments/dvbbs/2005-8/200581314436302.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/2005-8/200581314436302.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

      [em09][em11]下次我的也发给你帮我焊       [em11]

HQ

以下是引用文招在2005-8-13 1:47:00的发言：





<img src="attachments/dvbbs/2005-8/20058131522747.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/2005-8/20058131522747.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

      [em09]

小鬼头

因为，高频电流的返回路径问题。。。。呵呵

文招

我的EL84垃圾也在开声呢[em11][em11][em11][em11]

Julien

EL84小妖精的魅力，听女声威力无穷啊

文招

JJ哥也是夜猫子[em11][em11][em11]

Julien

[em11]

文招

<img src="attachments/dvbbs/2005-8/20058131522747.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/2005-8/20058131522747.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

文招

输出电容用的是小日本机上拆下的ELNA  for audio 22uF/25V  CE-BP电容。拿在手上就比国内售的重多了。引脚也特粗，要磨细点才能放进去。运放的退耦我用的是ELNA silmic 680uF/35V。CS8412数字退耦我OS 33uF/16V，CS8412模拟退耦我用ELNA cerafine 10uF/25V。TDA1543退耦我用菲利普轴向引脚，方便放在散热器下。运放暂时用菲NE5534试机，正常后用AD844和LT1028试下。<img src="attachments/dvbbs/2005-8/20058131452669.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/2005-8/20058131452669.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

文招

焊好CS8412后，其余的就可全部装完了。
<img src="attachments/dvbbs/2005-8/200581314436302.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/2005-8/200581314436302.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />