對于較大容量的鉛酸蓄電池， 為了提高充電效率， 通常選用開關型充電器。設計(ji)的24V20Ah鉛酸(suan)蓄(xu)電(dian)(dian)池開(kai)關型充電(dian)(dian)器(qi)實(shi)際(ji)電(dian)(dian)路(lu)(lu)見圖(tu), 在該電(dian)(dian)路(lu)(lu)中(zhong)，用兩只專用集成電(dian)(dian)路(lu)(lu)UC3906與UC3823和(he)(he)一只通(tong)用運放即可完成全部(bu)控制(zhi)功能。充電(dian)(dian)器(qi)主電(dian)(dian)路(lu)(lu)由功率MOSFET ( IRF9503) 、續流二極管(guan)( UES2402) 和(he)(he)濾波電(dian)(dian)感( 130 μH) 等元(yuan)件(jian)組成。