幻象電(dian)(dian)(dian)(dian)源(yuan)用于電(dian)(dian)(dian)(dian)容麥克(ke)風。它之以是(shi)被稱為(wei)幻象電(dian)(dian)(dian)(dian)源(yuan)，是(shi)由于調音(yin)(yin)臺沿音(yin)(yin)頻下(xia)(xia)行的(de)統一條線纜(lan)下(xia)(xia)行發送(song)一個電(dian)(dian)(dian)(dian)壓。是(shi)以，麥克(ke)風領受的(de)是(shi)長途調音(yin)(yin)臺電(dian)(dian)(dian)(dian)源(yuan)。

幻象電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)供給的(de)是直流電(dian)(dian)(dian)(dian)(dian)壓（凡是為12-48伏），用于給電(dian)(dian)(dian)(dian)(dian)容麥克(ke)風的(de)電(dian)(dian)(dian)(dian)(dian)子器(qi)(qi)件供電(dian)(dian)(dian)(dian)(dian)。對某些(xie)（非駐(zhu)極(ji)體）電(dian)(dian)(dian)(dian)(dian)容，它也能夠被用來供給元件自身的(de)極(ji)化電(dian)(dian)(dian)(dian)(dian)壓。這(zhe)個電(dian)(dian)(dian)(dian)(dian)壓經由(you)過程麥克(ke)風電(dian)(dian)(dian)(dian)(dian)纜(lan)由(you)裝備了幻象電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)的(de)調(diao)音臺供給，或由(you)某些(xie)在線式的(de)內部源(yuan)(yuan)供給。典范(fan)的(de)均衡式XLR型毗(pi)連器(qi)(qi)，針腳(jiao)2和針腳(jiao)3上(shang)的(de)電(dian)(dian)(dian)(dian)(dian)壓是相(xiang)稱的(de)。比方(fang)，48伏幻象電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)，絕對地線（屏障）針腳(jiao) 1而言，針腳(jiao)2和針腳(jiao)3都是48伏直流電(dian)(dian)(dian)(dian)(dian)。

由于針腳2和(he)針腳3上的(de)電(dian)(dian)壓(ya)完整不異(yi)，幻(huan)象(xiang)(xiang)電(dian)(dian)源即便(bian)加到均(jun)衡式(shi)動圈(quan)(quan)麥克(ke)(ke)(ke)風上也不影響：由于不輸出(chu)電(dian)(dian)壓(ya)差，以是不電(dian)(dian)流。現實(shi)上，幻(huan)象(xiang)(xiang)電(dian)(dian)源有(you)電(dian)(dian)流限定，如許，即便(bian)它短路或掉線(xian)，也不會(hui)破(po)壞動圈(quan)(quan)麥克(ke)(ke)(ke)風。普通(tong)環境下，均(jun)衡式(shi)動圈(quan)(quan)麥克(ke)(ke)(ke)風能夠毗連(lian)到由幻(huan)象(xiang)(xiang)電(dian)(dian)源供電(dian)(dian)的(de)調音臺輸出(chu)端(duan)，不任何題(ti)目。