CD4060是一種內部功能完善的集成塊，應用比較靈活。本文介紹一種巧妙利CD4060的一些特點設計出的快速充電器。
    大 家知道，鎳(nie)(nie)鎳(nie)(nie)電(dian)(dian)(dian)(dian)(dian)(dian)池充(chong)(chong)(chong)足電(dian)(dian)(dian)(dian)(dian)(dian)后，電(dian)(dian)(dian)(dian)(dian)(dian)池兩端電(dian)(dian)(dian)(dian)(dian)(dian)壓不僅不再上升，還會出(chu)現下(xia)降趨勢。如果在充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)過程中測出(chu)其下(xia)降趨勢，便(bian)可(ke)保證電(dian)(dian)(dian)(dian)(dian)(dian)池所需(xu)的(de)準確充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)時間，實(shi)現大電(dian)(dian)(dian)(dian)(dian)(dian)流 快速充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)，延長(chang)電(dian)(dian)(dian)(dian)(dian)(dian)池壽命。但多數電(dian)(dian)(dian)(dian)(dian)(dian)路較(jiao)復雜，不易制(zhi)作。平時所見充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)器電(dian)(dian)(dian)(dian)(dian)(dian)路多用電(dian)(dian)(dian)(dian)(dian)(dian)壓比較(jiao)法，不易調準，常產生誤差(cha)。本電(dian)(dian)(dian)(dian)(dian)(dian)路適用于所提要(yao)求，且可(ke)提供(gong)不同的(de) 充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)流以適應不同的(de)需(xu)要(yao)，電(dian)(dian)(dian)(dian)(dian)(dian)路簡(jian)單，制(zhi)作容易。

    電路如圖所示。ICl中的壓控振蕩器(VCO)受加在9腳上的電池電壓的控制， 其輸出信號一路送入IC2中的相位比較器14腳，與IC2中的VCO信號進行相位比較，比較結果控制IC2中的壓控振蕩器；另一路送入ICl中的相位比較器，與IC2來的VCO信號進行比較，其結果控制充電電路。充電時，電池電壓上升，使ICl中的VCO振蕩頻率上升。當13腳為低電平時，C6放電極其緩 慢。
電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中，VD3為IC提供(gong)恒定電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)，可(ke)防止干擾。VDl、V4組成恒流電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)，可(ke)防止誤動(dong)(dong)作(zuo)且(qie)轉(zhuan)動(dong)(dong)開關S2,可(ke)獲(huo)得不(bu)同的充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)流，按圖 6?15所示(shi)，可(ke)分別獲(huo)得約50mA(R9擋(dang)(dang))、300mA(R8擋(dang)(dang))、1A(R10擋(dang)(dang))的充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)流。電(dian)(dian)(dian)(dian)(dian)(dian)容Cl、電(dian)(dian)(dian)(dian)(dian)(dian)阻Rl為延時電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)，它主要(yao)用以防止干擾 引(yin)起(qi)誤動(dong)(dong)作(zuo)及(ji)可(ke)長時間不(bu)取出電(dian)(dian)(dian)(dian)(dian)(dian)池。若C6放電(dian)(dian)(dian)(dian)(dian)(dian)過多，電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)便重新啟動(dong)(dong)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)。S1為電(dian)(dian)(dian)(dian)(dian)(dian)源開關兼(jian)啟動(dong)(dong)開關。S3為微動(dong)(dong)開關，可(ke)消除C6上(shang)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)對下次(ci)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)的影響。