當輸(shu)入電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)變(bian)化(hua)或(huo)負載(zai)變(bian)化(hua)時，取(qu)樣(yang)控制(zhi)電(dian)(dian)(dian)(dian)路進行取(qu)樣(yang)、放大，使伺服電(dian)(dian)(dian)(dian)機按所(suo)需方向帶動(dong)穩壓(ya)(ya)(ya)(ya)器(qi)轉(zhuan)臂轉(zhuan)動(dong)，調(diao)(diao)整輸(shu)出電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)直至符合額定(ding)值(zhi)，達(da)到穩定(ding)之目(mu)的。當輸(shu)入電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)高于設定(ding)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)，或(huo)者電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)低(di)于設定(ding)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)，或(huo)發生(sheng)故障(zhang)時，本穩壓(ya)(ya)(ya)(ya)器(qi)過壓(ya)(ya)(ya)(ya)保護電(dian)(dian)(dian)(dian)路啟動(dong)自動(dong)關閉輸(shu)出，防(fang)止用電(dian)(dian)(dian)(dian)器(qi)受損。當用于冰箱、空調(diao)(diao)、冰柜的穩壓(ya)(ya)(ya)(ya)時，可選擇延(yan)時輸(shu)出狀(zhuang)態，防(fang)止短時停電(dian)(dian)(dian)(dian)又來電(dian)(dian)(dian)(dian)時使壓(ya)(ya)(ya)(ya)縮機發生(sheng)悶(men)機而損壞。
