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，鎳鎳電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池充(chong)(chong)(chong)足電(dian)(dian)(dian)(dian)(dian)(dian)(dian)后，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池兩端電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)不(bu)(bu)僅不(bu)(bu)再上升，還會出現下(xia)降(jiang)趨勢。如果(guo)在充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)過程(cheng)中測出其下(xia)降(jiang)趨勢，便可保證電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池所需的(de)準(zhun)確充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)時(shi)間(jian)，實現大電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流 快速充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，延長電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池壽命。但多數電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)較(jiao)復(fu)雜，不(bu)(bu)易制(zhi)作。平時(shi)所見充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)多用(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)比較(jiao)法，不(bu)(bu)易調準(zhun)，常產生(sheng)誤差。本(ben)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)適(shi)用(yong)(yong)于所提(ti)要求，且可提(ti)供不(bu)(bu)同(tong)的(de) 充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流以適(shi)應不(bu)(bu)同(tong)的(de)需要，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)簡單，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)路中，VD3為IC提供恒定電(dian)(dian)壓，可(ke)(ke)防(fang)止干(gan)擾。VDl、V4組成恒流(liu)電(dian)(dian)路，可(ke)(ke)防(fang)止誤動(dong)(dong)作且(qie)轉動(dong)(dong)開關(guan)S2,可(ke)(ke)獲得不同的充(chong)(chong)電(dian)(dian)電(dian)(dian)流(liu)，按(an)圖 6?15所示(shi)，可(ke)(ke)分別獲得約50mA(R9擋)、300mA(R8擋)、1A(R10擋)的充(chong)(chong)電(dian)(dian)電(dian)(dian)流(liu)。電(dian)(dian)容(rong)Cl、電(dian)(dian)阻Rl為延時電(dian)(dian)路，它主要用以防(fang)止干(gan)擾 引(yin)起誤動(dong)(dong)作及(ji)可(ke)(ke)長時間不取出電(dian)(dian)池。若(ruo)C6放電(dian)(dian)過多，電(dian)(dian)路便重新啟動(dong)(dong)充(chong)(chong)電(dian)(dian)。S1為電(dian)(dian)源開關(guan)兼啟動(dong)(dong)開關(guan)。S3為微動(dong)(dong)開關(guan)，可(ke)(ke)消除C6上電(dian)(dian)壓對(dui)下次充(chong)(chong)電(dian)(dian)的影(ying)響。