就是
以下是引用HQ在2005-5-1 3:32:00的发言:不是所有ero都适合发烧的。这种mkt……
准备试的2片1543并联9V工作
<img src="attachments/dvbbs/2005-5/2005518417407.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/2005-5/2005518417407.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />准备把它固定在外壳上散热,用9V供电,与8V供电4片1543比试一下
RIFA那个还可以。ERO那个就不怎么样了。
以下是引用好老明在2005-4-30 13:03:00的发言:让两位前辈见笑了.有空多些指点吧.
昨天在佛山找了很久也找不到220u的飞利浦电容,只好买了四只100U的全新RIFA(3元/只),两只2.2U的拆机ERO(4元/只).准备并联使用,不知有无人试过?<img src="attachments/dvbbs/2005-4/200543013259647.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/2005-4/200543013259647.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
AKMY5兄果然是高手,努力学习中……
好老明兄!我补上一张陶瓷04的图吧!
是54LS04DMQB,军用陶瓷的<img src="attachments/dvbbs/2005-4/2005430141831854.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/2005-4/2005430141831854.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
顺便给你看看我早年做的CS8412+TDA1311的解码
<img src="attachments/dvbbs/2005-4/2005430141929285.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/2005-4/2005430141929285.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
里面用的TDA1311A
<img src="attachments/dvbbs/2005-4/200543014200644.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/2005-4/200543014200644.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
给你看看背面吧!我是用电池供电的,也可以用单端5V,我为了试验,并了好多电容上去,效果不错,虽然太乱不好看!而且你看我的布线,所有的地线和+V,都不是同一根线的!要分开来,就是绞成成的那一股线!然后板上的各部分滤波也严格分开!这一点很重要!要不信噪比等一些指标不会高的!呵呵
<img src="attachments/dvbbs/2005-4/2005430142431678.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/2005-4/2005430142431678.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
哈哈!!
让两位前辈见笑了.有空多些指点吧.昨天在佛山找了很久也找不到220u的飞利浦电容,只好买了四只100U的全新RIFA(3元/只),两只2.2U的拆机ERO(4元/只).准备并联使用,不知有无人试过?
呵呵,wongkm33前辈
我对”狼狈为奸“到不觉得咋的,好老明兄要和万健兄”比翼齐飞“??哇哈哈。。张GG协会会员的?
狼狈为奸?
以下是引用好老明在2005-4-28 13:23:00的发言:说得好,我们大家要努力钻研,好好学习,团结一致,携手共进,比翼齐飞,狼狈为奸…………为把我们的1543建设有中国特色的社会主义而奋斗终生!!!!!!!!!
这里
http://www.hifidiy.net/dispbbs.asp?boardID=2&replyID=96920&ID=9936&skin=0万建兄
以下是引用万健在2005-4-28 8:02:00的发言:输出电容要220UF的,DAC输出电阻要用碳膜,你翻一下我的贴,试一试,大家研究一下,把它弄的更好。1543用9V没有一点问题,我有一次LT317的调整端断线了不知道,输出15V加在4个1543上,开机听了二分钟,觉的高音特别好,跟平时不一样,关了检查,1543烫的要命,修好电源后,1543也没坏一块,用9V一定要散热片了,我准备用9V二片1543和8V四片1543比较一下,1543并联觉的一片变二片改善最大,并多了,声音没那么柔和,虽然其他方面有长进。
万健兄的帖子实在太多太丰富了,我都不知怎么找呀?碳膜电阻在我这里很难找到.LT317和LT1085哪个好点呀?输出电容不知用哪种好?我见万建兄曾说过:"推荐使用费力扑轴向或ELNA的棕神.紫袍无极性."不知用在这里是否适合?下图居然只用4.7u:
日本仔真是两极分化严重.
AAAA兄,
哈哈,最近大会小会开得多,所以出口成废,让您见笑了,我见论坛比较严肃,所以想活泼一下气氛,希望您大人有大量,网开一面,让我苟延残喘苟且偷生吧!.
以下是引用小钳子在2005-4-28 15:18:00的发言:这才是真正的DIY!
.
以下是引用好老明在2005-4-28 13:23:00的发言:说得好,我们大家要努力钻研,好好学习,团结一致,携手共进,比翼齐飞,狼狈为奸…………为把我们的1543建设有中国特色的社会主义而奋斗终生!!!!!!!!!
好,说得好!
这才是真正的DIY!万健兄
说得好,我们大家要努力钻研,好好学习,团结一致,携手共进,比翼齐飞,狼狈为奸…………为把我们的1543建设有中国特色的社会主义而奋斗终生!!!!!!!!!好老明 兄
输出电容要220UF的,DAC输出电阻要用碳膜,你翻一下我的贴,试一试,大家研究一下,把它弄的更好。1543用9V没有一点问题,我有一次LT317的调整端断线了不知道,输出15V加在4个1543上,开机听了二分钟,觉的高音特别好,跟平时不一样,关了检查,1543烫的要命,修好电源后,1543也没坏一块,用9V一定要散热片了,我准备用9V二片1543和8V四片1543比较一下,1543并联觉的一片变二片改善最大,并多了,声音没那么柔和,虽然其他方面有长进。就是这块!
<img src="attachments/dvbbs/2005-4/20054281102675.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/2005-4/20054281102675.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />忍无可忍,决定重搞一块!
BNC座在北京中发市场买的
Amphenol的75欧BNC座6元一个,CANARE的75欧BNC头+橡胶护套25元一套,75欧同轴电缆也是CANARE的数字视频电缆,每米20元.推荐你使用佳耐美(CANARE)的产品,性能优异,货源充足.http://www.canare.com.cn/
图示为50欧BNC与75欧BNC与75欧同轴线连接时的反射情况对比.
<img src="attachments/dvbbs/2005-5/20055131267260.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/2005-5/20055131267260.gif\');}" onmousewheel="return imgzoom(this);" alt="" />