論壇 › DIY分享 › NAS/MEDIA PLAYER線性電源pcb

billymud 發表於 2014-4-23 13:51

咁多搞作，精益求精。佩服！{:6_193:}

johnme 發表於 2014-4-23 14:42

billymud 發表於 2014-4-23 13:51 static/image/common/back.gif
咁多搞作，精益求精。佩服！

多謝billy兄無私分享同指導{:8_387:}

obee 發表於 2014-4-23 16:42

johnme 發表於 2014-4-12 22:13 static/image/common/back.gif
Kenneth_obee兄,
你都做左唔少sigma11,
同埋都有玩nas同cas,


LT108x for sure.

johnme 發表於 2014-4-23 16:46

kenneth_obee 發表於 2014-4-23 16:42 static/image/common/back.gif
LT108x for sure.

why ar?

tell us a bit more about your impression la~{:8_390:}

obee 發表於 2014-4-23 17:01

johnme 發表於 2014-4-23 16:46 static/image/common/back.gif
why ar?

tell us a bit more about your impression la~

because
-simple (less component less chance get hardware failure)
-cheap (even use 1083 just $1xx)
-less heat (less dropout means less heat)
-SQ better than switching PSU, enough.

There's nothing the best, the art of playing hifi is to find a simpliest way to produce best possible sound. NAS has effect to SQ, but not critical compare to other things like DAC / AMP / Speaker. Why waste time and money to make so large, hot PSU for it, if using LDO already can make a very good result?

obee 發表於 2014-4-23 17:02

用 LDO 只是一個缺點, 相對易做. << 唔夠型?

edison133 發表於 2014-4-23 17:10

Very nice!

edison133 發表於 2014-4-23 17:16

本帖最後由 edison133 於 2014-4-23 17:20 編輯

kenneth_obee 發表於 2014-4-23 17:01 static/image/common/back.gif
because
-simple (less component less chance get hardware failure)
-cheap (even use 1083 just $1xx) ...

言之有理!
只是樂趣少d {:8_399:}

上示波器在2A以上負載比較下, 就會明sigma11 的好處。{:8_390:}

obee 發表於 2014-4-23 17:20

edison133 發表於 2014-4-23 17:16 static/image/common/back.gif
言之有理!
只是樂趣少d

我現在的DAC內也只是用LDO, 但聽感比之前的DAC好上N倍.
之前的DAC也說電是如何如何. 我悟出一個道理: 堆料要用腦, 盲目堆料只是浪費自己時間.

edison133 發表於 2014-4-23 17:25

kenneth_obee 發表於 2014-4-23 17:20 static/image/common/back.gif
我現在的DAC內也只是用LDO, 但聽感比之前的DAC好上N倍.
之前的DAC也說電是如何如何. 我悟出一個道理: 堆 ...

你兩台DAC的分別還不只穩壓部份吧!!!
不能直接比較的.

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