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測試鋁電解電容器耐壓簡單方法!

2023-05-25
       鋁質電解電容是由鋁圓筒做負極,里面裝有液體電解質,[敏感詞]一片彎曲的鋁帶做正極制成。還需要經過直流電壓處理,使正極片上形成一層氧化膜做介質。它的特點是容量大,但是漏電大,穩定性差,有正負極性,適宜用于電源濾波或者低頻電路中。使用的時候,正負極不要接反。


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可能性(xing):鋁質電(dian)(dian)解(jie)電(dian)(dian)容(rong)器(qi)的(de)介(jie)質膜是(shi)通過陽(yang)極氧化方式(shi)獲(huo)得(de),因此(ci),短時間的(de)小(xiao)電(dian)(dian)流(liu)“擊(ji)穿(chuan)”不會損壞鋁電(dian)(dian)解(jie)電(dian)(dian)容(rong)器(qi)


基(ji)本方法:將(jiang)鋁質(zhi)電(dian)(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器(qi)串聯一10k電(dian)(dian)(dian)(dian)阻;緩緩增加所施加的電(dian)(dian)(dian)(dian)壓(ya),保(bao)持充電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)流在(zai)1mA以下(對應電(dian)(dian)(dian)(dian)阻上的電(dian)(dian)(dian)(dian)壓(ya)低于(yu)10V),直到即(ji)使不(bu)繼續增加所施加的電(dian)(dian)(dian)(dian)壓(ya)電(dian)(dian)(dian)(dian)流仍不(bu)降低時對應的電(dian)(dian)(dian)(dian)壓(ya)就是(shi)電(dian)(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器(qi)的擊穿電(dian)(dian)(dian)(dian)壓(ya);這個電(dian)(dian)(dian)(dian)壓(ya)的90%就是(shi)電(dian)(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器(qi)的額定電(dian)(dian)(dian)(dian)壓(ya)這種方法只適用(yong)于(yu)鋁電(dian)(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器(qi)。

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