救命！電源有雜訊點算？

jwnobel

尋日換咗個冷凍MK牆插，換埋條X-60做拖板線，一開機，聽到以前從未有過嘅.……雜訊！！{：6_200：}
仲好勁…換番條O記2.0，就好DD，再插番原來個牆插，發現原來一路都有雜訊，只係以前比較細聲同矇，証明隻MK插有料到，還原番啲垃圾 .…衣家一開機，7隻喇叭一齊Hmmmmmmmm...........點算？有冇高人指點下？

ckw3031

電源有雜訊就一定有，點攪都會有，只是你投放多小去隔走去，隔得嚟又唔會cut嘢先好。
最容易就係用filter拖板，或用條靜的PC先，但有D平價filter PB會有trade off。

plnl88

尋日換咗個冷凍MK牆插，換埋條X-60做拖板線，一開機，聽到以前從未有過嘅.……雜訊！！{：6_200：}
仲好勁 ...
jwnobel 發表於 2011-12-7 00:25

Humming? Ground loop 似啲喎。

avlam

Humming? Ground loop 似啲喎。
plnl88 發表於 2011-12-7 01:18

中文係咩呀 ?

jwnobel

Humming? Ground loop 似啲喎。
plnl88 發表於 2011-12-7 01:18

    咁點攪呀？

plnl88

咁點攪呀？
jwnobel 發表於 2011-12-7 01:29

http://www.post76.com/discuss/vi ... ht=Ground%2Bloop%2B
http://www.post76.com/discuss/vi ... ht=Ground%2Bloop%2B

jwnobel

plnl88 發表於 2011-12-7 01:33

    Plnl88 ching, 感激億分

obee

Groud loop...
Try this test, unplug your TV 天線, if no that noise immediately. Bingo.
If that's ground loop, try to cut a little portion of the TV 天線 of the shielding part. That means to cut the shielding linking between wall socket to your TV. You can cut it anywhere either in the wall socket side or the TV side.

jwnobel

一早試机，果然係ground loop 作怪！我成個人亦生猛番哂！plnl88 ching多謝哂！Kenneth_obee ching, thx!