I-resistor iyisakhi sikagesi esingasebenzi ukudala ukumelana ekugelezeni kwamandla kagesi. Cishe kuzo zonke izinethiwekhi zikagesi kanye nezifunda zikagesi zingatholakala. Ukumelana kulinganiswa ngama-ohms. I-ohm ukumelana okwenzeka lapho amandla kagesi e-ampere eyodwa edlula ku-resistor ene-volt eyodwa yokwehla kuma-terminal ayo. Amandla kagesi alingana ne-voltage emaphethelweni e-terminal. Lesi silinganiso simelelwa yiUmthetho ka-Ohm:

Ama-resistor asetshenziselwa izinjongo eziningi. Izibonelo ezimbalwa zifaka phakathi umkhawulo wamanje kagesi, ukuhlukaniswa kwamandla kagesi, ukukhiqizwa kokushisa, amasekethe okufanisa nokulayisha, inzuzo yokulawula, kanye nama-constant time constants. Atholakala kwezentengiselwano ngamanani okumelana angaphezu kwe-oda eziyisishiyagalolunye ngobukhulu. Angasetshenziswa njengamabhuleki kagesi ukusabalalisa amandla e-kinetic ezitimeleni, noma abe mancane kune-millimeter yesikwele yama-elekthronikhi.

Amanani Okumelana (Amanani Akhethwayo)
Ngawo-1950 ukukhiqizwa okwandisiwe kwama-resistor kwadala isidingo samanani okumelana ajwayelekile. Uhla lwamanani okumelana lulinganiswa namanani abizwa ngokuthi akhethwayo. Amanani akhethwayo achazwa ochungechungeni lwe-E. Ochungechungeni lwe-E, inani ngalinye liphakeme ngamaphesenti athile kunelangaphambilini. Kukhona uchungechunge lwe-E oluhlukahlukene lokubekezelelana okuhlukile.

Izinhlelo zokusebenza ze-Resistor
Kukhona ukwehluka okukhulu emikhakheni yezicelo zama-resistor; kusukela ezingxenyeni ezinembile kuma-elekthronikhi edijithali, kuze kube amadivayisi okulinganisa ngobuningi obubonakalayo. Kulesi sahluko kubhalwe izinhlelo zokusebenza eziningana ezidumile.

Ama-resistors alandelanayo nahambisanayo
Kumasekethe kagesi, ama-resistor avame ukuxhumeka ochungechungeni noma ngokulingana. Umklami wesekethe angase, isibonelo, ahlanganise ama-resistor amaningana anamanani ajwayelekile (uchungechunge lwe-E) ukuze afinyelele inani elithile lokumelana. Ekuxhumekeni kochungechunge, ugesi odlula ku-resistor ngayinye uyafana futhi ukumelana okulinganayo kufana nesamba sama-resistor ngamanye. Ekuxhumekeni okuhambisanayo, i-voltage edlula ku-resistor ngayinye iyafana, kanti okuphambene nokumelana okulinganayo kufana nesamba samanani aphambeneyo kuwo wonke ama-resistor ahambisanayo. Kuma-resistor ezihloko ngokulingana nangochungechunge, incazelo eningiliziwe yezibonelo zokubala inikezwa. Ukuxazulula amanethiwekhi ayinkimbinkimbi nakakhulu, imithetho yesekethe kaKirchhoff ingasetshenziswa.

Kala ugesi wamanje (i-shunt resistor)
Amandla kagesi angabalwa ngokulinganisa ukwehla kwamandla kagesi phezu kwe-resistor enembile enokumelana okwaziwayo, okuxhunywe ngokulandelana nesekethe. Amandla kagesi abalwa ngokusebenzisa umthetho we-Ohm. Lokhu kubizwa ngokuthi i-ammeter noma i-shunt resistor. Ngokuvamile lokhu kuyi-resistor enembile kakhulu ye-manganin enenani eliphansi lokumelana.

Ama-resistor ama-LED
Izibani ze-LED zidinga ugesi othize ukuze zisebenze. Ugesi ophansi kakhulu ngeke ukhanyise i-LED, kuyilapho ugesi ophezulu kakhulu ungase ushise idivayisi. Ngakho-ke, zivame ukuxhunywa ngokulandelana nama-resistor. Lawa abizwa ngokuthi ama-ballast resistors futhi alawula ugesi ngokunganaki kwisekethe.

Isivikelo senjini yokuqhuma
Ezimotweni uhlelo lokungenisa umoya luqhutshwa yisiphephetha esiqhutshwa yinjini yokuphefumula. I-resistor ekhethekile isetshenziswa ukulawula isivinini sesiphephetha. Lokhu kubizwa ngokuthi i-resistor yenjini yokuphefumula. Kusetshenziswa imiklamo ehlukene. Umklamo owodwa uchungechunge lwama-resistor e-wirewound anosayizi ohlukene wesivinini sesiphephetha ngasinye. Omunye umklamo uhlanganisa isekethe ehlanganiswe ngokuphelele ebhodini lesiphephetha eliphrintiwe.