- #1 [timothyyy], 15-12-10 21:46
- #2 [伊雲士], 15-12-10 21:55係無極電容
最後修改時間: 2015-12-10 21:55:40 - #3 [chuckt], 15-12-10 22:02It's for signal coupling, just use a good film cap (which is non-polar).
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- #4 [timothyyy], 15-12-10 22:28如果買左係有極電容, 咁點?
- #5 [羅密歐], 15-12-10 22:381μ 630V 有極性電容?!來張照片看看好了。
- #6 [wongkm33], 15-12-10 22:52膽機交連電容是薄膜電容,一般沒有正負極,只有內外層之分,怎接都沒大問題的。如果嚴格說,接高壓一端是電容外層,內層接下一級或輸出。怎分內外,看電容上標字書寫順序,字頭一端(左端)是內層,字尾一端(右端)是外層。旁路用時外層接地。
- #7 [paulpoon168], 15-12-10 23:09如果買左係有極電容, 咁---in some cases, Just.... Explosion.... BANG!!!
- #8 [timothyyy], 15-12-11 15:54Hello,
I just asked the shop sellin me the caps. He said the sentence end side should go with rca out, the sentence start side shoul be input side.
Correct? - #9 [timothyyy], 15-12-11 15:54Hello,
I just asked the shop sellin me the caps. He said the sentence end side should go with rca out, the sentence start side shoul be input side.
Correct? - #10 [wongkm33], 15-12-13 21:43從一本HiFi膽機書節錄的
- #11 [伊雲士], 16-02-20 02:53
- #12 [r33_kevin], 16-02-20 09:52音響咁低頻(相對無線電),粒cap既方向其實會唔會唔係太大影響?
- #13 [proricky], 16-02-20 12:21交連就算用有極都無分正負,因為交流系直通cap
- #14 [羅密歐], 16-02-20 12:58#13. 不敢茍同。在線路內交連的音頻訊號,是AC on DC。雖然為脈動,可通過(有極性或無極性)電容,但它依然是建基於有直流電位差之上的。如用有極性的電容而又錯接其正負極,只會令電介質損壞,漏電,最終失去電容的特性。
- #15 [proricky], 16-02-20 13:56#14. 不敢茍同
交連訊號是ac,絕不能用dc諗法 - #16 [desktop], 16-02-20 14:08#4
如果買左有極性,輸出電容的正極是接 V3的陰極。 - #17 [desktop], 16-02-20 14:09#14
所講的是正確的
最後修改時間: 2016-02-20 14:10:37 - #18 [arthurc], 16-02-20 14:24#1
如版主highlight 的電容,如果數值陪大一陪或兩陪,在signal path 會否對聲音有幫助?
最後修改時間: 2016-02-20 14:30:00 - #19 [羅密歐], 16-02-20 14:48#15. 與其工作是否正在交連訊號無關,極性總是要考慮的首要原素。
Standard electrolytic capacitors are polarized components due to their asymmetrical construction, and may only be operated with a higher voltage on the anode than on the cathode at all times. Voltages with reverse polarity, or voltage or ripple current higher than specified, can destroy the dielectric and thus the capacitor. The destruction of electrolytic capacitors can have catastrophic consequences (explosion, fire).
以上擇錄自維基。
https://en.m.wikipedia.org/wiki/Electrolytic_capacitor - #20 [talkboy], 16-02-20 15:33同意#14。
#13、15 所講,真係未聽過。或者我錯。 - 下一頁 (1 of 2)
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