ZX21A直流電阻箱（六組開關）

ZX21A直流電阻箱（六組開關）

直流電(dian)(dian)阻(zu)(zu)箱(xiang)是電(dian)(dian)阻(zu)(zu)值可(ke)變的(de)電(dian)(dian)阻(zu)(zu)量具(ju),其電(dian)(dian)阻(zu)(zu)值可(ke)在已知(zhi)范圍內按一定的(de)階梯(ti)而改變。電(dian)(dian)阻(zu)(zu)箱(xiang)是利用變換(huan)裝置(zhi)(zhi)來改變其阻(zu)(zu)值的(de)可(ke)變電(dian)(dian)阻(zu)(zu)器具(ju)。這種(zhong)變換(huan)裝置(zhi)(zhi)通常采(cai)用十(shi)進盤式(shi)(旋(xuan)鈕式(shi))結構，也可(ke)根據需要，采(cai)用插頭(tou)式(shi)和端(duan)鈕式(shi)結構。電(dian)(dian)阻(zu)(zu)箱(xiang)的(de)線(xian)(xian)路(lu)可(ke)分為(wei)串(chuan)(chuan)聯線(xian)(xian)路(lu)和串(chuan)(chuan)并聯線(xian)(xian)路(lu)構成(cheng)。