Master Ventilation Products Inc. (MVP) 致力于(yu)為您提(ti)供(gong)獨特、優異的(de)產品(pin),以滿(man)足(zu)各種(zhong)應用和(he)性能要求。我們是各種(zhong)通用風扇(shan)的(de)供(gong)應商(shang)。電(dian)(dian)(dian)位(wei)器是具有三個(ge)引出端(duan)、阻值(zhi)可按某種(zhong)變化(hua)規律調(diao)節的(de)電(dian)(dian)(dian)阻元(yuan)(yuan)件。電(dian)(dian)(dian)位(wei)器通常(chang)由(you)(you)電(dian)(dian)(dian)阻體和(he)可移動的(de)電(dian)(dian)(dian)刷(shua)組成(cheng)。當(dang)電(dian)(dian)(dian)刷(shua)沿電(dian)(dian)(dian)阻體移動時,在輸出端(duan)即(ji)獲得(de)與位(wei)移量成(cheng)一定關(guan)系的(de)電(dian)(dian)(dian)阻值(zhi)或(huo)電(dian)(dian)(dian)壓(ya)。電(dian)(dian)(dian)位(wei)器既(ji)可作(zuo)三端(duan)元(yuan)(yuan)件使用也可作(zuo)二端(duan)元(yuan)(yuan)件使用。后(hou)者(zhe)可視作(zuo)一可變電(dian)(dian)(dian)阻器,由(you)(you)于(yu)它(ta)在電(dian)(dian)(dian)路中的(de)作(zuo)用是獲得(de)與輸入電(dian)(dian)(dian)壓(ya)(外加電(dian)(dian)(dian)壓(ya))成(cheng)一定關(guan)系的(de)輸出電(dian)(dian)(dian)壓(ya),因此稱之為電(dian)(dian)(dian)位(wei)器。