Lub hauv paus ntsiab lus thaum ntxov ntawm electromagnetic induction muab lub hauv paus theoretical rau kev sib kis tau zoo ntawm hluav taws xob hluav taws xob. Raws li cov hauv paus ntsiab lus no, cov engineers thaum ntxov tau sim coil thiab hlau -cov qauv tseem ceeb los hloov pauv tam sim no (AC) ntawm qhov sib txawv voltage, txhawm rau txo lub zog poob thaum lub sij hawm ntev - kis tau tus mob. Txawm hais tias thaum ntxov transformer tsim tau yooj yim thiab txwv nyob rau hauv kev ua tau zoo, lawv tau pom qhov ua tau ntawm kev hloov pauv qib voltage los ntawm electromagnetic induction.
Raws li AC systems tau dhau los ua tus qauv kev lag luam, kev siv tshuab hluav taws xob tau nce sai. Hlau-cov qauv tsim tau hloov pauv los ntawm qhib- sib nqus- Circuit Court rau kaw-magnetic- Circuit Court configurations, thaum kev txhim kho hauv winding rwb thaiv tsev thiab kev tsim cov txheej txheem tseem ceeb txhim kho kev ua tau zoo thiab kev ntseeg tau. Thaum lub sij hawm no, transformers tau dav saws nyob rau hauv fais fab nroj tsuag, kis kab, thiab tis networks, ua indispensable Cheebtsam ntawm lub hwj chim systems. Nrog rau qhov tshwm sim ntawm ultra- siab-voltage kis tau tus mob thiab ntse daim phiaj, niaj hnub transformers tau txav dhau lub hom phiaj ntawm kev ua haujlwm siab thiab poob qis kom suav nrog kev saib xyuas ntse, tsis siv neeg voltage tswj, thiab kev tiv thaiv tej thaj chaw deb muaj peev xwm, yog li ua lub luag haujlwm ruaj khov thiab tseem ceeb hauv lub zog hluav taws xob.