恒(heng)流(liu)(liu)源主要用于(yu)檢測熱繼電(dian)(dian)(dian)(dian)器、塑(su)殼斷路(lu)器、小型(xing)短路(lu)器及需(xu)要設定(ding)額定(ding)電(dian)(dian)(dian)(dian)流(liu)(liu)、動(dong)作電(dian)(dian)(dian)(dian)流(liu)(liu)、短路(lu)保護(hu)電(dian)(dian)(dian)(dian)流(liu)(liu)等生產場合。恒(heng)流(liu)(liu)大功率(lv)直流(liu)(liu)電(dian)(dian)(dian)(dian)源 輸(shu)出電(dian)(dian)(dian)(dian)流(liu)(liu)的大小與負載(zai)的大小無(wu)關，其主控量(liang)是“電(dian)(dian)(dian)(dian)流(liu)(liu)”。該(gai)電(dian)(dian)(dian)(dian)源應用在電(dian)(dian)(dian)(dian)除塵器上(shang)，與“電(dian)(dian)(dian)(dian)壓源”相比(bi)具備很多優點。

　　恒流(liu)(liu)源(yuan)在(zai)(zai)電(dian)(dian)除塵(chen)器(qi)上的(de)供電(dian)(dian)特性呈(cheng)“正(zheng)反饋”工(gong)作，即電(dian)(dian)源(yuan)輸(shu)(shu)(shu)出(chu)電(dian)(dian)功(gong)率(lv)大(da)小(xiao)與除塵(chen)器(qi)所需電(dian)(dian)功(gong)率(lv)大(da)小(xiao)成正(zheng)比關系；如當(dang)除塵(chen)器(qi)某時刻粉(fen)塵(chen)濃度(du)變(bian)大(da)，要(yao)除塵(chen)器(qi)保(bao)持除塵(chen)效率(lv)不變(bian)則(ze)需要(yao)給除塵(chen)器(qi)供電(dian)(dian)的(de)高壓電(dian)(dian)源(yuan)在(zai)(zai)該(gai)時刻同步增大(da)輸(shu)(shu)(shu)出(chu)功(gong)率(lv)；正(zheng)由于恒流(liu)(liu)源(yuan)輸(shu)(shu)(shu)出(chu)電(dian)(dian)流(liu)(liu)恒定，而輸(shu)(shu)(shu)出(chu)電(dian)(dian)壓隨負載大(da)小(xiao)變(bian)化(hua)而變(bian)化(hua)，當(dang)粉(fen)塵(chen)濃度(du)變(bian)大(da)時，則(ze)恒流(liu)(liu)電(dian)(dian)源(yuan)輸(shu)(shu)(shu)出(chu)電(dian)(dian)壓也同步增大(da)，所反應(ying)在(zai)(zai)除塵(chen)器(qi)上即電(dian)(dian)源(yuan)輸(shu)(shu)(shu)出(chu)電(dian)(dian)功(gong)率(lv)是(shi)同步增大(da)。而正(zheng)是(shi)由于恒流(liu)(liu)電(dian)(dian)源(yuan)對(dui)除塵(chen)器(qi)來說是(shi)正(zheng)反饋工(gong)作，所以(yi)該(gai)電(dian)(dian)源(yuan)適應(ying)工(gong)況能力強，運(yun)行穩定，且(qie)能長期保(bao)持高沉積(ji)效率(lv)。