Kowa ya san mitar wutar lantarki. A zamanin yau, ana amfani da mita mai wayo don aunawa da lissafin wutar lantarki ta gida. Idan ka duba da kyau, za ka ga cewa akwai siga ta 5 (60) da aka rubuta a wurin da aka fi sani da mitar wutar lantarki.

Misali, siga a cikin da'irar ja a cikin hoton da ke sama: 5 (60) A. Idan muka duba naúrar, mun san cewa an rubuta ta a matsayin wutar lantarki, to menene alaƙar da ke tsakanin waɗannan wutar lantarki guda biyu? Me ke faruwa idan aka wuce wutar lantarki? Bari mu yi magana game da abin da wutar lantarki biyu ke nufi bisa ga maƙallan waje (5) da kuma cikin maƙallan (60).
Na'urar yanzu a cikin maƙallan
Wutar lantarki a cikin baka - 60A a cikin misalin, tana nufin matsakaicin ƙarfin lantarki mai ƙima na mitar makamashi. Ba kamar sauran kayan aiki ba, ƙarfin lantarki mai ƙima na mitar makamashin lantarki yana shafar yanayin muhalli sosai, don haka galibi ana barin wani gefe idan ya bar masana'anta - ainihin matsakaicin ƙarfin lantarki mai ƙima shine 120% na ƙarfin lantarki mai alama. Saboda haka, idan adadin da ke cikin baka shine 60, matsakaicin ƙarfin lantarki mai ƙima shine 72A - idan ba yanayi ne mai tsauri ba, tasirin da ke kan matsakaicin ƙarfin lantarki mai ƙima gabaɗaya ba zai kai 20%. Saboda haka, matsakaicin ƙarfin lantarki mai ƙima na mita mai alama da 60A gabaɗaya shine kusan 66A a ainihin amfani.
Me ke faruwa idan aka wuce wannan ƙimar? Amsar ita ce ma'auni marasa daidaito - wataƙila ƙari, wataƙila ƙasa da haka.
Maƙallan waje na yanzu
Ana kiran waɗannan 5 da ke wajen baka a nan da ainihin wutar lantarki, wanda kuma ake kira da canjin wutar lantarki. Ana ƙaddara shi ta hanyar farawar wutar lantarki na mitar makamashin lantarki - mafi ƙarancin ƙimar wutar lantarki wanda ke ba da damar mitar lantarki ta ci gaba da juyawa da aunawa akai-akai. Farawar wutar lantarki na mita mai wayo gabaɗaya shine 0.4% na ƙimar wutar lantarki. Wato, mita mai ƙimar wutar lantarki na 5A za a caji matuƙar wutar lantarki a cikin da'irar ta kai 0.02A lokacin da ake amfani da ita. Za a sami rabo tsakanin ƙimar wutar lantarki da matsakaicin ƙimar wutar lantarki, kamar 5 (60) A, wanda shine alaƙar sau 4. Ana kiran wannan rabo "faɗin kaya". Gabaɗaya, akwai sau 2, sau 4, sau 6, sau 8 ko ma fiye da sau goma - mafi girman faɗin kaya, mafi ƙarfin matakin fasaha da ake buƙata, kuma farashin mita zai zama mafi girma ta halitta.
Saboda haka, lambobin da ke wajen baka ba su da alaƙa da ainihin amfanin da mai amfani zai yi—ko fiye ko ƙasa da wannan ƙimar ba za ta shafi auna mitar ba. Akwai fannoni biyu da hasken calibration ya shafa: farashin mitar (wanda ya shafi faɗin kaya) da kuma hasken farawa (wanda aka ƙididdige ta hanyar hasken calibration).