收音機單放機等小家電常采用鎳鎘電池供電，常規的充電方法趕從家用電器取出電池，放入專用充電電器充電。充足電后再裝入電器使用。這樣取出裝入極不方便。如果在充電器輸出端焊接插頭，通過電器的電源插座對電池直接充電，5可避免電池取出裝入的麻煩。但由了充電器常根據鎳鎘電池的性能設計為恒流充電，電器內部電池接觸不良，如果不，打開了電器，關，當電器工作電流小于充電電流時，會使加在電路兩端作了這款限壓保護型充電器。

　　工(gong)作(zuo)(zuo)原理(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)如(ru)(ru)附。變(bian)壓(ya)(ya)器(qi)(qi)(qi)了(le)，41為整機提供工(gong)作(zuo)(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)；時(shi)(shi)(shi)基(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)555組(zu)成限壓(ya)(ya)控(kong)制電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)和(he)(he)！組(zu)成充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池極(ji)性檢測電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)了(le)2102把等組(zu)成簡易可(ke)(ke)調恒(heng)流(liu)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中兒01的(de)(de)正極(ji)接555控(kong)制端第，腳，將555內比較器(qi)(qi)(qi)閾值電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)設定(ding)(ding)為2V左右即發光管的(de)(de)i下(xia)向壓(ya)(ya)降(jiang)，同(tong)時(shi)(shi)(shi)還起到(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)指的(de)(de)作(zuo)(zuo)印；12起。行趕電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)指與(yu)穩(wen)定(ding)(ding)，了(le)2發射(she)(she)結電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)雙屯作(zuo)(zuo)出。，4分(fen)壓(ya)(ya)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)和(he)(he)52組(zu)成限壓(ya)(ya)切(qie)換(huan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)，分(fen)別為34.5和(he)(he)6檔(dang)(dang)，53用于充(chong)屯極(ji)性的(de)(de)轉換(huan)。其工(gong)作(zuo)(zuo)過(guo)程(cheng)如(ru)(ru)下(xia)打開電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)，關5電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)得屯工(gong)作(zuo)(zuo)兒01發光指。加電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)初(chu)始(shi)，因(yin)02兩端電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)還沒有改變(bian)，555因(yin)第②腳為低電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)平rfD置(zhi)位，第③腳輸出l，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)乎，第腳放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)端內部極(ji)管截(jie)止(zhi)(zhi)。1.在不連接電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)時(shi)(shi)(shi)，因(yin)無基(ji)極(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)而截(jie)止(zhi)(zhi)，172截(jie)止(zhi)(zhi)，02不發光，充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)對外無輸出。2.當(dang)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)插入裝有電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)插座時(shi)(shi)(shi)，若電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池極(ji)性正確(que)即4點(dian)為正點(dian)為負，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池殘存電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)通(tong)過(guo)539加到(dao)(dao)7的(de)(de)發射(she)(she)結，使導通(tong)了(le)2進入工(gong)作(zuo)(zuo)狀態，集電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)路(lu)(lu)通(tong)過(guo)用萬(wan)用檢測電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)器(qi)(qi)(qi)測量(liang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)器(qi)(qi)(qi)的(de)(de)容(rong)(rong)量(liang)庫選(xuan)(xuan)擇(ze)適幸的(de)(de)歐姆(mu)檔(dang)(dang)盧般來(lai)說，47，1以(yi)(yi)上的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)選(xuan)(xuan)擇(ze)父檔(dang)(dang)，47從，以(yi)(yi)上65選(xuan)(xuan)擇(ze)，檔(dang)(dang)，10以(yi)(yi)上的(de)(de)選(xuan)(xuan)擇(ze)8父比檔(dang)(dang)，容(rong)(rong)量(liang)為47卿以(yi)(yi)上的(de)(de)選(xuan)(xuan)擇(ze)尺，讓測纛時(shi)(shi)(shi)，頭指針應立(li)即向電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻為零的(de)(de)方向擺動(dong)，然后器(qi)(qi)(qi)，則(ze)針又向電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)為零如(ru)(ru)方向，島并(bing)且幅(fu)度(du)大(da)(da)，被，回(hui)到(dao)(dao)，這就(jiu)是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)器(qi)(qi)(qi)的(de)(de)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)與(yu)放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)過(guo)程(cheng)在測量(liang)過(guo)程(cheng)中，隸(li)針向零方向擺動(dong)的(de)(de)幅(fu)度(du)愈大(da)(da)明(ming)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)量(liang)愈大(da)(da)，反(fan)之則(ze)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)量(liang)愈小。利用這個(ge)原理(li)可(ke)(ke)以(yi)(yi)粗(cu)測電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)器(qi)(qi)(qi)是(shi)否有容(rong)(rong)量(liang)，并(bing)可(ke)(ke)以(yi)(yi)比較兩只(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)器(qi)(qi)(qi)容(rong)(rong)量(liang)的(de)(de)大(da)(da)小，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)器(qi)(qi)(qi)漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)與(yu)擊穿的(de)(de)測量(liang)。

　　將萬(wan)用(yong)打(da)至(zhi)8父(fu)檔(dang)測量電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)(qi)用(yong)父(fu)讓檔(dang)，測倨時可(ke)以看到針(zhen)右偏定角度后，然后漸(jian)(jian)漸(jian)(jian)向(xiang)左偏轉，直至(zhi)靠進阻(zu)(zu)值(zhi)(zhi)刻度為(wei)處(chu)但不(bu)(bu)會達到處(chu)實驗證明(ming)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)(qi)的(de)(de)絕(jue)(jue)緣電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)般應在(zai)(zai)幾百千歐以上(shang)，其(qi)它電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)(qi)的(de)(de)絕(jue)(jue)緣電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)在(zai)(zai)幾十兆歐以土對(dui)(dui)(dui)于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)(qi)，萬(wan)用(yong)的(de)(de)黑筆應接(jie)(jie)其(qi)正極(ji)，若絕(jue)(jue)緣且小于(yu)上(shang)述值(zhi)(zhi)，則(ze)明(ming)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)(qi)漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)絕(jue)(jue)緣電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)愈小，漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)愈嚴(yan)重；絕(jue)(jue)緣電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)為(wei)零，說明(ming)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)(qi)己擊穿(chuan)短路(lu)。，33插座等對(dui)(dui)(dui)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，另路(lu)則(ze)通(tong)過；9為(wei)提供基極(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流，使(shi)丁1維持導(dao)通(tong)，02發光，指(zhi)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)正在(zai)(zai)進行。3.芻電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)充(chong)(chong)到定值(zhi)(zhi)或因電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)接(jie)(jie)觸不(bu)(bu)良，使(shi)點(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)升高(gao)，經耵4分壓(ya)使(shi)555第(di)(di)(di)(di)(di)，腳(jiao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)位(wei)(wei)大于(yu)第(di)(di)(di)(di)(di)，腳(jiao)屯位(wei)(wei)82時，555置零，第(di)(di)(di)(di)(di)腳(jiao)內部放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)管導(dao)通(tong)輸(shu)(shu)(shu)出(chu)低(di)(di)(di)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)平(ping)(ping)(ping)1了2截止(zhi)，迅速切斷(duan)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，路(lu)此(ci)02熄滅，從(cong)而(er)對(dui)(dui)(dui)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)起到了保護(hu)作(zuo)用(yong)。4.今家用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)極(ji)性(xing)不(bu)(bu)正確，即點(dian)對(dui)(dui)(dui)8點(dian)地(di)為(wei)負時，了1了2亦截止(zhi)，從(cong)而(er)防(fang)止(zhi)了對(dui)(dui)(dui)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)的(de)(de)反向(xiang)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)和對(dui)(dui)(dui)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)路(lu)中(zhong)，5的(de)(de)作(zuo)用(yong)是當555第(di)(di)(di)(di)(di)腳(jiao)輸(shu)(shu)(shu)出(chu)高(gao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)平(ping)(ping)(ping)時，通(tong)過05對(dui)(dui)(dui)，2迅速充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，使(shi)555第(di)(di)(di)(di)(di)腳(jiao)及時上(shang)升為(wei)高(gao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)平(ping)(ping)(ping)，當電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)有接(jie)(jie)觸不(bu)(bu)良情況，使(shi)第(di)(di)(di)(di)(di)腳(jiao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)位(wei)(wei)大子第(di)(di)(di)(di)(di)，腳(jiao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)位(wei)(wei)，555迅速輸(shu)(shu)(shu)出(chu)低(di)(di)(di)屯平(ping)(ping)(ping)，及時切斷(duan)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)回路(lu)5的(de)(de)作(zuo)用(yong)是當囚電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)(chi)(chi)接(jie)(jie)觸不(bu)(bu)等原因致使(shi)555置零時，其(qi)第(di)(di)(di)(di)(di)，腳(jiao)為(wei)低(di)(di)(di)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)平(ping)(ping)(ping)，02通(tong)過5放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)，直至(zhi)第(di)(di)(di)(di)(di)腳(jiao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)平(ping)(ping)(ping)小于(yu)或等于(yu)第(di)(di)(di)(di)(di)腳(jiao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)平(ping)(ping)(ping)的(de)(de)12，555第(di)(di)(di)(di)(di)腳(jiao)又輸(shu)(shu)(shu)出(chu)高(gao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)平(ping)(ping)(ping)，如(ru)果此(ci)時屯池(chi)(chi)(chi)(chi)接(jie)(jie)觸不(bu)(bu)15問已解(jie)決，則(ze)充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)又動進入充(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀態。

　　元(yuan)件選(xuan)擇選(xuan)覬(ji)555時基電(dian)(dian)路；7選(xuan)次級電(dian)(dian)壓(ya)為6卯的31變(bian)壓(ya)器(qi)52用單刀擲開(kai)關(guan)，53用雙(shuang)刀雙(shuang)擲開(kai)關(guan)；了1選(xuan)3彡100 8550等，充電(dian)(dian)器(qi)輸出(chu)插(cha)(cha)頭(tou)義選(xuan)用十字(zi)型電(dian)(dian)源插(cha)(cha)頭(tou)其它(ta)元(yuan)件如附調試與(yu)使(shi)用電(dian)(dian)路裝好后，只(zhi)需將萬用置(zhi)電(dian)(dian)流檔(dang)后串接于充電(dian)(dian)回路，視電(dian)(dian)池類型微調RP，將充電(dian)(dian)電(dian)(dian)流調整到規定值即可。