WIZARD CUSTOM SHOP變壓器壞了

Discussion in '效果器、Amp、DIY' started by yellow07, Oct 11, 2010.

  1. yellow07

    yellow07 Member

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    請問哪裡買得到或是有可替代的變壓器呢?

    AC ADAPTOR
    MODEL:AD-0901500AT
    INPUT:110VAC 60Hz
    OUTPUT:9VAC 1500mA

    CAUTION:THIS ADAPTOR
    IS FOR WP-3 ONLY! DAMAGE
    WILL OCCUR WHEN USED ON
    9VDC EFFECT PEDALS.
     
  2. tonekiller

    tonekiller Member

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    上馬吉森再買一個就好啦
     
  3. wizardma

    wizardma Active Member

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    瑪吉森網站因為網域名稱到期來不及延長,
    結果網站連不上去了...
    虛擬主機廠商的回覆速度又很慢,
    所以目前網站關掉了...

    要買變壓器請直接連絡瑪級森的負責人
    wcw1013@gmail.com

    話說....貼紙上面的警語應該不用這麼完整的打出來吧...... =.=||

    還有不知道您當初是怎麼損壞的?
    是插到效果器還是插錯電壓了?
    AC和DC是不一樣的,AC輸出的變壓器不可以直接插效果器。
    插下去就會燒掉變壓器。
     
    Last edited: Oct 17, 2010
  4. wizardma

    wizardma Active Member

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    瑪吉森網站已經恢復運作
     
  5. Henryk

    Henryk New Member

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    很久沒有新套件了....
     
  6. wizardma

    wizardma Active Member

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    囧....

    套件要考慮的東西比較多
    電路板是已經試做過好幾款了
    可以的話我就先釋出電路板好了
     
  7. cool no.9

    cool no.9 New Member

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    一般電器行就買的到了,只要是ac110v,注意
    output是9v 1.5A(或以上,一顆效果器約150~
    200mA,1.5A接8顆算夠用!),接頭極性大部分
    輸入端是外負內正…
     
  8. hjack

    hjack Member

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    ac/ac的變壓器不像DC那麼好買,當然材料行"元件"很多
     
  9. cool no.9

    cool no.9 New Member

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    汽車電瓶也可以供電…,在合歡山上超好用的…
    ,其實不一定要用市售的電源供應器,可以購買
    MEAN WELL的RS-25-12,我的標準配備,不到
    1000元,可以調降到10V,比市售的電源供應器
    好用且專業多了,波形也非常穩定,2.1A接10顆
    效果器也OK的!:)

    http://www.meanwell.com.tw/search/rs-25/default.htm

    http://www.meanwell.com.tw/webnet/search/seriessearch.html#enclosed
     
  10. t8544

    t8544 New Member

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    其實我早就在找這種變壓器了,只是沒有做9v的,原來12的可以降到9v呀
     
  11. Henryk

    Henryk New Member

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    謝謝! PCB對我種懶人也很OK啊!

    上次W大說有RAT板子,不知好了沒?
     
    Last edited: Oct 16, 2010
  12. cool no.9

    cool no.9 New Member

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    最多降到10v,加上電源線長度的能量損耗,到效果器端約9.7v吧
    ,boss變壓器約9.55v,市面上的pedal電源供應器cp值跟這個比
    簡直是lp比肯德雞…
     
    Last edited: Oct 16, 2010
  13. t8544

    t8544 New Member

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    怎麼降呀,是那個變壓器本身就有一個可變電阻呀?
    因為我常用的,看不到可以調電壓的地方?
     
  14. cool no.9

    cool no.9 New Member

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    V+V-接頭的最右側有一個svr(adj),請逆時針轉到底就是10v了,
    順時針轉到底為14v…:)
     
  15. wizardma

    wizardma Active Member

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    工業用電源多是交換式電源
    漣波大,高頻雜訊多。
    個人不喜歡這種東西當聲音器材的電源。

    直接用鉛酸電瓶其實是很乾淨,且12V對效果器來說其實不會太高。
    但是沒電時電壓會越來越低,
    而且要充電,這要自己取捨。
     
    Last edited: Oct 16, 2010
  16. wizardma

    wizardma Active Member

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    RAT版本之分,有畫過一次早期版本但沒做PCB。

    這是我以前畫的PCB
    [​IMG]
     
    Last edited: Oct 16, 2010
  17. cool no.9

    cool no.9 New Member

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    不會啊,聲音很結實且不糊,還挺喜歡的…,很對味。
    我試過在電瓶上並聯一個車用逆電流給效果器供電,聲音就是乾淨
    但動態很平(濾波濾過頭了…),充電器也才1千出頭不算貴啦,還
    没試過免保養及加電瓶水的供電對聲音是否有差別…
     
  18. wizardma

    wizardma Active Member

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    高頻開關雜訊是超過人耳的聽覺範圍的,這邊討論的這個是60KHz。
    所以可以說感受幾乎是沒有,
    但是它就是存在,心裡就是不爽(我比較龜毛)。
    規格書上面記載漣波電壓120mVpp,
    和線性穩壓電路(20mV)比似乎是多了點。

    有的廠商設計的開關電源就經常被說雜音很大....

    其實效果器的用電量和汽車比起來算是小巫見大巫了,
    所謂逆電流好像只是狂加電容?
    其實加電容只是降低輸出電壓在負載電流變動時的波動程度,
    電容本身只有濾波,沒有穩壓的功能,(電容充電電壓升高,放電時電壓降低)
    電壓的穩定還是要靠穩壓電路,
    電容加太多實際效益太少了,
    有點浪費錢又佔空間,
    電容就像是蓄水池,在用水量突然變大時抽水/壓縮機來不及供水,
    就先由蓄水池供水,
    等抽水機速度跟上的時候,
    供水就是抽水/壓縮機來供水,
    這就是穩壓電路的作用方法。
    所以電容在這裡的用途,
    其實只有穩壓電路還來不及反應的一瞬間而已,
    可能只有幾mS,
    然後電容就沒作用了。(當然輸出電容在穩壓電路裡面也有其他角色,但是牽涉到閉迴路控制,那個太深了,我也不太懂,所以就不說了)

    不過說這麼多,只要自己用的高興就好了,
    上面慬供參考。

    不過我建議您可以是著在那台交換電源後面加個三端子穩壓IC,
    把逆電流拿掉,看看聲音會變成什麼樣子?
    只是很好奇會有什麼差別,
    不保證聲音會變好。

    充電器我買六百多而已...可能你買到比較好的吧?
     
    Last edited: Oct 17, 2010
  19. hjack

    hjack Member

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  20. cool no.9

    cool no.9 New Member

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    w大你是指電瓶後接一個78L12再到效果器嗎?還要再加一個散熱片…

    充電器是在汽車材料行買的阿里山充電器,全波橋式整流1250元整…:D
     
    Last edited: Oct 17, 2010

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