请J版老大

gqhsy

J版好，如果把阴极输出换成6N8P是不是好些，还用改那些电阻的参数吗？

Julien

小玄

双250V经6Z4全波整流后有300V输出,再经一个3.3K电阻分压,+B电压有250V.后级晶体管我用双55V供电,每声道两对K1058\J162,电流调250MA.

小玄

<img src="attachments/dvbbs/2005-11/20051113102147872.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/2005-11/20051113102147872.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

小玄

<img src="attachments/dvbbs/2005-11/20051113101635915.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/2005-11/20051113101635915.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><img src="attachments/dvbbs/2005-11/20051113101652802.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/2005-11/20051113101652802.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><img src="attachments/dvbbs/2005-11/20051113101714124.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/2005-11/20051113101714124.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

Julien

小玄

按计算6P14推挽电流不超200AM,你说用晶体管整流好还是用5Z3P整流好?

Julien

但是电子管整流一般都控制在22uF以下

小玄

上海产的6P14管子怎样???

Julien

5Z2P内阻比5Z4P高，最大脉冲电流比5Z4P小

小玄

我目前的机了，胆部份用5Z4整流，电流几十MA，换上5Z2、5Z3应该都行？干嘛我换上5Z2P后开机会出现怪声？怕烧又换下了。5Z2和5Z4有何区别？我查了一下好象参数一样？谢谢再指教！！！！！

Julien

实际上做第一张也不错

小玄

<img src="attachments/dvbbs/2005-11/200511202342515.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/2005-11/200511202342515.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><img src="attachments/dvbbs/2005-11/20051120234319919.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/2005-11/20051120234319919.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><img src="attachments/dvbbs/2005-11/20051120234412199.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/2005-11/20051120234412199.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><img src="attachments/dvbbs/2005-11/2005112023442870.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/2005-11/2005112023442870.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
这四张都是本论坛的电路图，好象都是差分+推换放大，请问那款较好？

小玄

我目前的机了，胆部份用5Z4整流，电流几十MA，换上5Z2、5Z3应该都行？干嘛我换上5Z2P后开机会出现怪声？怕烧又换下了。5Z2和5Z4有何区别？我查了一下好象参数一样？谢谢再指教！！！！！

Julien

5Z2P和5Z3P管脚定义一致

6Z4是小九脚，如果是笔误，为5Z4P，那么定义也和5Z3P一样，只是他是旁热式的

Julien

其中EL84/6P14的屏压只有300V不到，很安全。
留意一下这个链接所述的基本概念http://www.hifidiy.net/dispbbs.asp?boardID=10&ID=19174&skin=0

5Z3P全波整流具体输出多少电压不能简单的用1.2倍的次级有效电压来决定。因为要考虑几个因素：1、电子管内阻造成的输出电压降低；2、变压器次级直流电阻造成的输出电压降低；3、滤波方式造成的输出电压降低，包括电容输入式滤波的第一节电容大小，电感输入式滤波，以及滤波用电感的直流电阻大小，都对输出电压有影响；4、负载越重，电流越大，电容输入滤波的时候，电压跌落越大。

另外，即使是晶体管半波整流，在电容输入式滤波的时候，只要变压器次级内阻足够小，滤波电容较大，且负载不是过重的情况下，输出电压也在变压器次级电压有效值的1－1.2倍左右，和全波整流接近，只是变压器由于有直流流过，效率大大降低。

桥式整流和全波整流的输出电压是基本相同的，桥式整流叫做 桥式全波整流，其本质就是全波整流，两者输出特性相同，计算上不会有异同。这是你公式的错误之处。

晶体管整流内阻确实比电子管小，但是和胆味没有关系。什么是胆味我也不清楚，每个人听到的东西都不同，只有自己的喜好了，严格负责的来说，我不能回答你哪个更好。

关于整流和滤波的基本公式，我在胆机初级设计的帖子里有介绍，你可以看一下不同滤波形式造成的输出特性区别

小玄

<img src="attachments/dvbbs/2005-11/2005112602836365.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/2005-11/2005112602836365.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
EL84与6P14可互换吧？但这图390V供电？看本论坛资料6P14供电电压最高300V，那此图是否有误??我如用300V变压器经5Z3P全波整流300*1.2=360V,如用晶体管半波整流应该是300*0.7=210V,桥式整流是300*1.4=420V吧??是这样的吗?还有以前曾看到有关书刊,说胆机用电子管整流供电胆味浓,晶体管石味浓,这说法你是如何看的?晶体管整流电源内阻应该比电子管整流内阻小吧?望能指教!谢谢!!

Julien

6P14可以用5Z3P整流，还可以使用的整流用电子管有 5AR4（GZ34），5Z8P，5Z10
晶体管和电子管整流原理都一样，不存在好不好的问题，只有你喜欢不喜欢，我也不能确定。
6P14电源变压器初级用300V是否合理取决于你的电源变压器次级直流内阻，整流方式，滤波方式以及电路形式，我同样不能确定。但是一般情况下，太高了

小玄

说说吧！先谢谢了！

小玄

此图输出变压器的绕制方法能具体说说吗?我现已按此图筹备了所有元件,可说是万事具备只欠东风了?现次谢谢你了!!!!!!!!!!