家電維修工具中的萬用表是一種多(duo)功能、多(duo)量程的(de)(de)測量儀器，主要用于(yu)電路板和(he)(he)電氣系(xi)統(tong)的(de)(de)故(gu)障(zhang)檢測和(he)(he)維(wei)(wei)修(xiu)。 萬用表(biao)可以(yi)測量電壓(ya)、電流(liu)、電阻、電容、二極管和(he)(he)晶(jing)體管的(de)(de)電壓(ya)和(he)(he)電流(liu)等(deng)，它具有測量準確度高(gao)、穩定性(xing)好、響(xiang)應(ying)速(su)(su)度快、操作簡單方(fang)便等(deng)特(te)點。可以(yi)幫助維(wei)(wei)修(xiu)人員快速(su)(su)定位故(gu)障(zhang)，準確找出(chu)故(gu)障(zhang)元件，從而快速(su)(su)修(xiu)復故(gu)障(zhang)。

維修工具中的螺絲刀是一種具有(you)金(jin)屬刀(dao)柄(bing)和(he)木制手柄(bing)的(de)旋轉工(gong)具，通常具有(you)不(bu)同大小的(de)刀(dao)頭(tou)，以適(shi)應(ying)不(bu)同規(gui)(gui)格的(de)螺(luo)(luo)絲(si)(si)(si)。螺(luo)(luo)絲(si)(si)(si)刀(dao)可以用(yong)來擰(ning)緊(jin)或松開各(ge)種螺(luo)(luo)絲(si)(si)(si)，如(ru)固(gu)定電(dian)器(qi)的(de)螺(luo)(luo)絲(si)(si)(si)、連接部件的(de)螺(luo)(luo)絲(si)(si)(si)等。此外，螺(luo)(luo)絲(si)(si)(si)刀(dao)還可以用(yong)來拆卸和(he)安(an)裝電(dian)器(qi)部件，例如(ru)開關、燈泡等。使用(yong)螺(luo)(luo)絲(si)(si)(si)刀(dao)時需要注(zhu)意安(an)全，避免(mian)用(yong)力過大或使用(yong)不(bu)正確(que)的(de)規(gui)(gui)格，以免(mian)損壞(huai)電(dian)器(qi)或傷害自己(ji)。

鉗子是一種(zhong)常見(jian)的家電維修(xiu)工(gong)具，主(zhu)要用(yong)于(yu)夾持(chi)、彎曲、切斷金屬(shu)材料，以(yi)及擰緊和松開(kai)螺絲。鉗(qian)(qian)(qian)(qian)(qian)(qian)(qian)子(zi)的種(zhong)類很多，包(bao)括(kuo)尖嘴鉗(qian)(qian)(qian)(qian)(qian)(qian)(qian)、斜口(kou)鉗(qian)(qian)(qian)(qian)(qian)(qian)(qian)、剝(bo)線(xian)鉗(qian)(qian)(qian)(qian)(qian)(qian)(qian)、鯉(li)魚鉗(qian)(qian)(qian)(qian)(qian)(qian)(qian)等(deng)。尖嘴鉗(qian)(qian)(qian)(qian)(qian)(qian)(qian)主(zhu)要用(yong)于(yu)夾持(chi)細小(xiao)的金屬(shu)零件(jian)，如螺絲、釘(ding)子(zi)等(deng)；斜口(kou)鉗(qian)(qian)(qian)(qian)(qian)(qian)(qian)主(zhu)要用(yong)于(yu)剪斷金屬(shu)材料，如電線(xian)、鋼(gang)絲等(deng)；剝(bo)線(xian)鉗(qian)(qian)(qian)(qian)(qian)(qian)(qian)主(zhu)要用(yong)于(yu)剝(bo)離電線(xian)絕緣(yuan)層；鯉(li)魚鉗(qian)(qian)(qian)(qian)(qian)(qian)(qian)主(zhu)要用(yong)于(yu)夾持(chi)管(guan)道和連(lian)接(jie)件(jian)，以(yi)及擰緊和松開(kai)螺絲。 在使用(yong)鉗(qian)(qian)(qian)(qian)(qian)(qian)(qian)子(zi)時，應注意安全，以(yi)免受傷。

試電筆由(you)筆(bi)尖金屬(shu)體(ti)(ti)、電(dian)阻(zu)、彈簧和(he)發光(guang)(guang)二極(ji)管等組(zu)成，筆(bi)尖金屬(shu)體(ti)(ti)是(shi)試電(dian)筆(bi)的核心部件(jian)，它可(ke)(ke)以(yi)通(tong)過接(jie)觸帶(dai)電(dian)體(ti)(ti)來檢測(ce)電(dian)流是(shi)否存在(zai)。當試電(dian)筆(bi)接(jie)觸帶(dai)電(dian)體(ti)(ti)時，電(dian)流會通(tong)過試電(dian)筆(bi)內部的電(dian)阻(zu)，然后使發光(guang)(guang)二極(ji)管發光(guang)(guang)，從而(er)得知電(dian)路是(shi)否通(tong)電(dian)。 試電(dian)筆(bi)的特點是(shi)操作簡單、方便快捷、可(ke)(ke)靠性和(he)經濟(ji)性高(gao)等，因此在(zai)家庭和(he)工業領域被廣泛使用。

電烙鐵的(de)主(zhu)要作用(yong)是熔化(hua)焊(han)(han)錫將元(yuan)器件焊(han)(han)接到(dao)電(dian)路(lu)板(ban)上(shang)或把(ba)元(yuan)器件從(cong)電(dian)路(lu)板(ban)上(shang)拆下來, 它是手工施焊(han)(han)的(de)主(zhu)要工具，在維修空(kong)調的(de)電(dian)路(lu)故障時經常會用(yong)到(dao)。電(dian)烙鐵(tie)按其功能(neng)分(fen)類，有(you)內熱式(shi)、外熱式(shi)、恒溫(wen)式(shi)、吸錫式(shi)及熱風槍等幾種。恒溫(wen)電(dian)烙鐵(tie)中采用(yong)熱敏元(yuan)件來測溫(wen)以控(kong)制加(jia)熱電(dian)路(lu)，從(cong)而(er)使(shi)烙鐵(tie)頭保持(chi)恒溫(wen)，因而(er)被廣泛使(shi)用(yong)。