PASS  ALEPH5专题

wzy728

无论是47000UF的思碧还是33000UF的RIFA,都不可避免音箱出现交流声,而且不算小,用万用表量有5MV,这个离A30的手册给出的0.5MV整整相差10倍.但是采用C-R-C滤波以后,尽管只是10000UF---0.1欧---10000UF的组合,喇叭里也是静如深海.
其实从电路结构分析:一级差分输入---单端输出这样的结构对电源的纹波抑制能力并不是很强,相对对电源要求是比较高的.所以有要求的朋友可以尝试C-R-C,C-L-C,或者稳压的方式.
<img src="attachments/dvbbs/2005-6/200561020553756.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/2005-6/200561020553756.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

文招

以下是引用wzy728在2005-6-9 14:22:00的发言：
开机瞬间震动挺大,可能对市电电压要求比较高.

我只用过小功率的箭猪[em12][em12][em12]

wzy728

开机瞬间震动挺大,可能对市电电压要求比较高.

文招

[em02][em02][em02]

小钳子

wzy728

新鲜出炉的"地摊型"A30:双28V供电,输出功率40W  RMS.
随手闪了两张~

<img src="attachments/dvbbs/2005-6/200569125420567.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/2005-6/200569125420567.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
<img src="attachments/dvbbs/2005-6/200569125437260.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/2005-6/200569125437260.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

lguofeng

wzy728

以下是引用twoguitar在2005-6-6 10:43:00的发言：
ZEN4都会很热的.哈哈

ZEN-4和A30的功耗是一样的~

yq777

wzy728

以下是引用yq777在2005-6-5 11:16:00的发言：
包括机箱散热器的，偶要蓄米了

文招

我就觉得你做A5是不够散热的[em11][em11][em11][em11]

wzy728

以下是引用文招在2005-6-5 10:25:00的发言：
我就觉得怕死鬼的这个东东热得恐怖[em10][em10][em10][em10][em10][em10]

做A5还不够大,但是手头只有一片够A5的散热器,也就只好拿这两片散热器做A30了.

yq777

包括机箱散热器的，偶要蓄米了

yq777

期待啊

文招

我就觉得怕死鬼的这个东东热得恐怖[em10][em10][em10][em10][em10][em10]

wzy728

这几天有点忙,所以不是很快~不过也快了......
<img src="attachments/dvbbs/2005-6/200565101650985.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/2005-6/200565101650985.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
<img src="attachments/dvbbs/2005-6/20056510174189.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/2005-6/20056510174189.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
<img src="attachments/dvbbs/2005-6/200565101717536.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/2005-6/200565101717536.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

lsyq168

我和  阿力准备每人购一套来做的,
请一定把我们考虑在内啊

lguofeng