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極性檢測電解穿心電容你懂嗎

來源:jincuigu.com.cn 發布時間:2020-05-29 返回
  很多電子產品中,穿心電容都是必不可少的電子元器件,它在電子設備中充當整流器的平滑濾波、電源和退耦、交流信號的旁路、交直流電路的交流耦合等。
  

穿心電容


  由于穿心電(dian)容的類(lei)型和結構種類(lei)比(bi)較多,因此(ci),使(shi)用(yong)者不(bu)僅需(xu)要了(le)解(jie)各類(lei)穿心電(dian)容的性(xing)能指標和一(yi)般特性(xing),而且(qie)還必須(xu)了(le)解(jie)在給定用(yong)途下(xia)各種元(yuan)件(jian)的優缺點、機械(xie)或(huo)環境的限制條件(jian)等(deng)。下(xia)文介紹穿心電(dian)容的主要參數及應用(yong),可供讀(du)者選(xuan)擇穿心電(dian)容種類(lei)時(shi)用(yong)。
  
  電(dian)(dian)(dian)解穿心電(dian)(dian)(dian)容的(de)(de)(de)正負極(ji)(ji)性是(shi)不允許接(jie)錯的(de)(de)(de),當(dang)極(ji)(ji)性標記(ji)無法辨認時(shi),可根據正向(xiang)聯(lian)接(jie)時(shi)的(de)(de)(de)漏(lou)電(dian)(dian)(dian)電(dian)(dian)(dian)阻(zu)大,反向(xiang)聯(lian)接(jie)時(shi)漏(lou)電(dian)(dian)(dian)電(dian)(dian)(dian)阻(zu)小的(de)(de)(de)特(te)點來檢測判斷。交換(huan)表(biao)筆前后兩次測量漏(lou)電(dian)(dian)(dian)電(dian)(dian)(dian)阻(zu)值,測出電(dian)(dian)(dian)阻(zu)值大的(de)(de)(de)一次時(shi),黑表(biao)筆接(jie)觸的(de)(de)(de)是(shi)正極(ji)(ji)。(因為黑表(biao)筆與表(biao)內的(de)(de)(de)電(dian)(dian)(dian)池的(de)(de)(de)正極(ji)(ji)相接(jie))
  
  萬用表撥到R×10檔,兩表筆分別搭在(zai)可變穿心(xin)電(dian)容(rong)的動(dong)(dong)片(pian)(pian)和定片(pian)(pian)上,緩(huan)慢(man)旋(xuan)動(dong)(dong)動(dong)(dong)片(pian)(pian),若(ruo)(ruo)表頭指(zhi)針(zhen)靜止(zhi)不動(dong)(dong),則無(wu)碰片(pian)(pian)現(xian)象(xiang),也不漏(lou)(lou)電(dian);若(ruo)(ruo)旋(xuan)轉至某一角(jiao)度,表頭指(zhi)針(zhen)指(zhi)到0Ω,則說明(ming)此處碰片(pian)(pian),若(ruo)(ruo)表頭指(zhi)針(zhen)有一定指(zhi)示或(huo)細微擺動(dong)(dong),說明(ming)有漏(lou)(lou)電(dian)現(xian)象(xiang)。
  
  電(dian)(dian)容(rong)(rong)(或稱電(dian)(dian)容(rong)(rong)量(liang))是表征穿心(xin)(xin)電(dian)(dian)容(rong)(rong)容(rong)(rong)納電(dian)(dian)荷本領(ling)的物(wu)理(li)量(liang)。我們(men)把穿心(xin)(xin)電(dian)(dian)容(rong)(rong)的兩極板間的電(dian)(dian)勢差增(zeng)加1伏(fu)所(suo)需的電(dian)(dian)量(liang),叫做穿心(xin)(xin)電(dian)(dian)容(rong)(rong)的電(dian)(dian)容(rong)(rong)。穿心(xin)(xin)電(dian)(dian)容(rong)(rong)從物(wu)理(li)學上講,它是一(yi)(yi)種靜態(tai)電(dian)(dian)荷存儲(chu)介質(就像一(yi)(yi)只水(shui)桶一(yi)(yi)樣,你(ni)可以把電(dian)(dian)荷充存進去。