Hall Effect Sensor ko Mai Tafsirin Tasirin Hall shine haɗe-haɗe na firikwensin dangane da tasirin Hall kuma ya ƙunshi kashi na Hall da kewayensa. Ana amfani da firikwensin Hall a cikin samar da masana'antu, sufuri da rayuwar yau da kullun. Daga tsarin ciki na firikwensin zauren, ko a cikin tsarin amfani, za ku ga cewamaganadisu na dindindinmuhimmin bangare ne na aiki. Me yasa ake buƙatar maganadisu na dindindin don firikwensin Hall?
Da farko, fara daga ka'idar aiki na Hall firikwensin, Hall Effect. Hall Effect wani nau'i ne na tasirin lantarki, wanda masanin kimiyyar lissafi ɗan Amurka Edwin Herbert Hall (1855-1938) ya gano a cikin 1879 lokacin da yake nazarin tsarin sarrafa karafa. Lokacin da na yanzu ya wuce ta hanyar madugu daidai da filin maganadisu na waje, mai ɗaukar hoto ya juya baya, kuma za a samar da ƙarin filin lantarki daidai da alkiblar halin yanzu da filin maganadisu, wanda zai haifar da yuwuwar bambanci a duka ƙarshen mai gudanarwa. Wannan al'amari shine sakamako na Hall, wanda kuma ake kira Hall m bambanci.
Tasirin zauren shine ainihin jujjuyawar ɓangarorin da ake cajin motsi wanda ƙarfin Lorentz ya haifar a cikin filin maganadisu. Lokacin da caje barbashi (electrons ko ramuka) aka tsare a cikin m kayan, wannan karkatar da take kaiwa zuwa tara tabbatacce da kuma korau cajin a cikin shugabanci perpendicular zuwa halin yanzu da Magnetic filin, don haka forming wani ƙarin transverse lantarki filin.
Mun san cewa lokacin da electrons ke motsawa a cikin filin maganadisu, ƙarfin Lorentz zai shafe su. Kamar yadda a sama, bari mu fara duba hoton da ke hagu. Lokacin da lantarki ya motsa zuwa sama, abin da ke haifar da shi yana motsawa zuwa ƙasa. To, bari mu yi amfani da dokar hannun hagu, bari layin maganadisu na maganadisu B (harbi a cikin allo) ya shiga cikin tafin hannu, wato tafin hannun yana waje, mu nuna yatsu hudu zuwa ga shugabanci na yanzu, wato maki huɗu ƙasa. Sannan, alkiblar babban yatsan yatsa ita ce ta karfin wutar lantarki. Ana tilasta wa electrons zuwa dama, don haka cajin da ke cikin farantin bakin ciki zai karkata zuwa gefe ɗaya a ƙarƙashin aikin filin maganadisu na waje. Idan wutar lantarki ta karkata zuwa dama, za a sami bambance-bambance mai yuwuwa a bangaren hagu da dama. Kamar yadda aka nuna a cikin adadi na dama, idan an haɗa voltmeter zuwa hagu da dama, za a gano wutar lantarki. Wannan shine ainihin ƙa'idar shigar da zauren. Wutar lantarki da aka gano ana kiranta ƙarfin wutar lantarki. Idan an cire filin maganadisu na waje, ƙarfin lantarki na Hall ya ɓace. Idan hoto ya wakilta, tasirin Hall yana kama da adadi mai zuwa:
i: shugabanci na yanzu, B: shugabanci na filin maganadisu na waje, V: ƙarfin lantarki na Hall, da ƙananan ɗigo a cikin akwatin ana iya ɗaukar su azaman electrons.
Daga ka'idar aiki na firikwensin Hall, ana iya gano cewa firikwensin tasirin Hall shine firikwensin aiki, wanda dole ne ya buƙaci samar da wutar lantarki na waje da filin maganadisu don yin aiki. Yin la'akari da buƙatun ƙananan ƙararrawa, nauyi mai sauƙi, ƙarancin wutar lantarki da amfani mai dacewa a cikin aikace-aikacen firikwensin, ana amfani da magnet mai sauƙi na dindindin maimakon hadaddun lantarki don samar da filin magnetic waje. Haka kuma, a cikin manyan nau'ikan nau'ikan maganadisu na dindindin,SmCokumaNdFeB rare duniyamaganadiso suna da fa'idodi kamar manyan kaddarorin maganadisu da kwanciyar hankali na aiki, wanda zai iya ba da damar haɓaka tasirin tasirin Hall mai girma ko firikwensin don isa daidaito, hankali, da ma'auni masu dogaro. Saboda haka NdFeB da SmCo suna amfani da ƙari azamanHall tasirin transducer maganadiso.
Lokacin aikawa: Satumba-10-2021