Nthawi zambiri zimawoneka kuti oyambitsa ambiri akukankhira kukana pamene akukonza dera, ndipo amachotsedwa ndikuwotchedwa.Ndipotu zakonzedwa kwambiri.Malingana ngati mumvetsetsa kuwonongeka kwa kukana, simukuyenera kuwononga nthawi yambiri.
Kukaniza ndi gawo lochulukira kwambiri pazida zamagetsi, koma si gawo lomwe limawononga kwambiri.Dera lotseguka ndilo mtundu wofala kwambiri wa kuwonongeka kwa kukana.Ndizosowa kuti mtengo wotsutsa umakhala waukulu, ndipo mtengo wotsutsa umakhala wochepa.Zodziwika bwino zimaphatikizapo zopinga za filimu ya carbon, resistors film film, wire bala resistors and insurance resistors.
Mitundu iwiri yoyamba ya resistors ndiyo yomwe imagwiritsidwa ntchito kwambiri.Chimodzi mwazodziwika za kuwonongeka kwawo ndikuti kuchuluka kwa kuwonongeka kwa kukana otsika (pansi pa 100Ω) ndi kukana kwakukulu (pamwamba pa 100kΩ) ndikokwera, komanso kukana kwapakati (monga mazana a ohms mpaka makumi a kiloohms) Kuwonongeka kochepa kwambiri;Chachiwiri, pamene zopinga zochepetsera zowonongeka, nthawi zambiri zimawotchedwa ndikuda, zomwe zimakhala zosavuta kuzipeza, pamene zotsutsana kwambiri siziwonongeka kawirikawiri.
Ma Wirewound resistors nthawi zambiri amagwiritsidwa ntchito pochepetsa kwambiri, ndipo kukana sikuli kwakukulu.Pamene cylindrical mabala resistors ayaka, ena amasanduka akuda kapena pamwamba pake amaphulika kapena kusweka, ndipo ena sadzakhala ndi zizindikiro.Zotsutsa za simenti ndi mtundu wa zida za mabala a waya, zomwe zimatha kusweka zikatenthedwa, apo ayi sipadzakhala zowoneka.Fuse resistor ikayaka, kachidutswa kakang'ono ka khungu kadzawomberedwa pamalo ena, ndipo ena alibe zowonera, koma sizidzapsa kapena kusanduka zakuda.Malingana ndi makhalidwe omwe ali pamwambawa, mukhoza kuyang'ana kuyang'ana kukana ndikupeza mwamsanga kukana kowonongeka.
Malinga ndi zomwe tazitchula pamwambapa, titha kuwona kaye ngati zopinga zocheperako pa bolodi lozungulira zidawotcha zipsera zakuda, ndiyeno molingana ndi mawonekedwe omwe otsutsa ambiri amatseguka kapena kukana kumakhala kokulirapo komanso zopinga zapamwamba. zimawonongeka mosavuta.Titha kugwiritsa ntchito multimeter kuyeza mwachindunji kukana pa malekezero onse a high resistor resistor pa bolodi dera.Ngati kukana koyezera kuli kwakukulu kuposa kukana mwadzina, kukana kuyenera kuonongeka (zindikirani kuti kukana kumakhala kokhazikika pamaso pa kuwonetsera Pomaliza, chifukwa pangakhale zinthu zofanana za capacitive mu dera, pali malipiro ndi kutulutsa ndondomeko), ngati kukana koyezedwa ndikocheperako kuposa kukana mwadzina, nthawi zambiri kumanyalanyazidwa.Mwanjira iyi, kukana kulikonse pa bolodi la dera kumayesedwanso, ndipo ngakhale chikwi chimodzi "chipha molakwika", sichidzaphonya.