一、數字電位器的作用有哪些
數(shu)字電(dian)(dian)(dian)(dian)位(wei)(wei)(wei)器(qi)(qi)由(you)數(shu)字輸(shu)入控(kong)制,產生一個模(mo)擬量的(de)輸(shu)出(chu)。依據數(shu)字電(dian)(dian)(dian)(dian)位(wei)(wei)(wei)器(qi)(qi)的(de)不同,抽頭(tou)電(dian)(dian)(dian)(dian)流最大值可(ke)以從幾(ji)(ji)百微安到幾(ji)(ji)個毫安。數(shu)字電(dian)(dian)(dian)(dian)位(wei)(wei)(wei)器(qi)(qi)采(cai)用數(shu)控(kong)方式(shi)調(diao)節電(dian)(dian)(dian)(dian)阻(zu)值的(de),具有(you)使(shi)用靈活(huo)、調(diao)節精(jing)度高、無觸點(dian)、低噪(zao)聲、不易污損、抗(kang)振動、抗(kang)干(gan)擾、體(ti)積小、壽(shou)命長等顯著優點(dian),可(ke)在許多領域取代機械電(dian)(dian)(dian)(dian)位(wei)(wei)(wei)器(qi)(qi)。那(nei)么數(shu)字電(dian)(dian)(dian)(dian)位(wei)(wei)(wei)器(qi)(qi)的(de)作用有(you)哪些呢?
數字電位器正在(zai)國內外迅速推(tui)廣,并大(da)量應(ying)用于檢(jian)測儀器、PC、手機(ji)、家用電器、現代(dai)辦(ban)公設備(bei)、工業控(kong)制、醫療設備(bei)等領域。
例如:電(dian)冰箱、程控機、電(dian)源、功率表、自動檢測設備、光纖網絡、調節(jie)(jie)LCD顯(xian)示屏、電(dian)壓控制(zhi)、取代機械式(shi)電(dian)位(wei)器、匹配(pei)線性(xing)阻抗、調節(jie)(jie)VCOM設置等等。
二、數字電位器使用方法是什么
1、片選(xuan)信號CS為低電(dian)平(ping)時允(yun)許滑塊(kuai)移動(dong),U/D為高電(dian)平(ping)時滑塊(kuai)向(xiang)高端(duan)移動(dong),為低時滑塊(kuai)向(xiang)低端(duan)移動(dong)。
2、片選信號CS由低(di)電(dian)平向高(gao)電(dian)平跳變時,并且INC為(wei)高(gao)電(dian)平時儲存滑塊位(wei)置(zhi),掉電(dian)后下次上電(dian)時依然(ran)保持該位(wei)置(zhi)。
3、片選信號CS為高電(dian)平時保持現(xian)狀,不(bu)允許(xu)動作;片選信號CS由低電(dian)平向(xiang)高電(dian)平跳變(bian)時,并且(qie)INC為低電(dian)平時恢復初(chu)始狀態,記憶(yi)點清(qing)除。