鋅錳干電池充電器電路,鋅錳干電池充電器，具有定時和充電指示功能，其充電電流為5OmA，可用于對端電壓為1.35~1/4V的鋅錳干電池充電器，具(ju)有(you)定時和充電(dian)指示功能，其充電(dian)電(dian)流為5OmA，可用于對端電(dian)壓(ya)為1.35~1/4V的全密封普通干(gan)電(dian)池充電(dian)。

電路工作原理：

該鋅錳干電(dian)(dian)池充電(dian)(dian)器電(dian)(dian)路(lu)(lu)由(you)電(dian)(dian)源輸入(ru)穩壓電(dian)(dian)路(lu)(lu)、充電(dian)(dian)電(dian)(dian)路(lu)(lu)和定時控制電(dian)(dian)路(lu)(lu)組成.

電(dian)(dian)源(yuan)輸(shu)入穩(wen)壓(ya)電(dian)(dian)路由電(dian)(dian)源(yuan)并(bing)關S2、熔斷器(qi)(qi)FU1、電(dian)(dian)源(yuan)變壓(ya)器(qi)(qi)T、整流二極管VD、濾波電(dian)(dian)容器(qi)(qi)C1、C3和穩(wen)壓(ya)集成電(dian)(dian)路組成。

定(ding)時(shi)控制(zhi)電(dian)(dian)路(lu)由定(ding)時(shi)起動按鈕S1、定(ding)時(shi)控制(zhi)開關(guan)S3、定(ding)時(shi)控制(zhi)集成電(dian)(dian)路(lu)IC2、電(dian)(dian)阻器(qi)R1~R5、電(dian)(dian)容器(qi)C2、停止(zhi)充電(dian)(dian)指示發光二極管(guan)VL5、VL6、晶體管(guan)V和繼(ji)電(dian)(dian)器(qi)K組成。

充電(dian)電(dian)路由電(dian)位器RP、電(dian)阻器R6~R13、充電(dian)指示發光二極管VL1~VL4和熔斷器FU2~FU5組成(cheng)。

接(jie)通S2，交流(liu)220V電(dian)(dian)壓(ya)(ya)經T降壓(ya)(ya)、VD整(zheng)流(liu)及C3濾波后，一路作(zuo)為(wei)充電(dian)(dian)電(dian)(dian)路的輸入電(dian)(dian)壓(ya)(ya);另(ling)一路經IC1穩壓(ya)(ya)后為(wei)IC2提供+12V工(gong)作(zuo)電(dian)(dian)壓(ya)(ya)。

按(an)動一下(xia)定(ding)時起動按(an)鈕S1，IC2開(kai)始計時工作(zuo);其3腳輸出高電(dian)平使V導通(tong)，K吸合，K的常(chang)開(kai)觸頭接通(tong)，電(dian)池GB1~GB4開(kai)始充電(dian)，同(tong)時VL1~VL4點亮。

S3用來(lai)設定(ding)充(chong)電(dian)(dian)時(shi)間，其定(ding)時(shi)范圍(wei)有3h、5h、7h和9h共(gong)4檔(dang)。對(dui)AA型(xing)干(gan)電(dian)(dian)池充(chong)電(dian)(dian)時(shi)，最佳充(chong)電(dian)(dian)時(shi)間為5h;對(dui)C型(xing)干(gan)電(dian)(dian)池充(chong)電(dian)(dian)時(shi)，最佳充(chong)電(dian)(dian)時(shi)間為9h。

當定時(shi)時(shi)間(jian)結(jie)束時(shi)，IC2的3腳輸(shu)出低電(dian)平(ping)，使(shi)V截止，K釋放，電(dian)池停(ting)止充電(dian);同(tong)時(shi)IC2的2腳由(you)低電(dian)平(ping)變(bian)為高電(dian)平(ping)，使(shi)VL5和VL6點亮，指示充電(dian)結(jie)束。

調(diao)整RP的阻值(zhi)，可(ke)改變充(chong)電電壓(ya)和(he)充(chong)電電流的大小。

元器件選擇：

R1~R5、R6、R8、R1O和(he)R12均選用l/4W的(de)(de)金屬(shu)膜電阻器；R7、R9、R11和(he)R13均選用1W的(de)(de)金屬(shu)膜電阻器。

RP選用2W的線繞可變電阻(zu)器。

C1選用(yong)(yong)獨石電(dian)容器;C2選用(yong)(yong)耐壓值為16V的(de)鋁電(dian)解電(dian)容器；C3選用(yong)(yong)耐壓值為5OV的(de)鋁電(dian)解電(dian)容器。

VD選(xuan)用1N4004或1N4007型(xing)硅整流(liu)二極管。

VL1~VL6均(jun)選(xuan)用φ3mm的(de)發光二極管(guan)。

V選用S805O或C8050型硅NPN晶體(ti)管。

IC1選(xuan)用LM7812型三端穩壓(ya)集(ji)成電路;IC2選(xuan)用ZN1034型定時集(ji)成電路。

K選用(yong)4098型(xing)12V直流繼(ji)電(dian)器(qi)。

S1選用(yong)微型(xing)動合按(an)鈕;S2選用(yong)250V，觸頭電(dian)流容量為(wei)5A的電(dian)源(yuan)開關(guan);S3選用(yong)單極四(si)位型(xing)轉換開關(guan)。

T選用3~5W、二次電壓為12~15V的電源變壓器。