Muaj ob txheej coils nyob rau hauv ib txwm ignition coil, thawj kauj thiab theem nrab kauj. Thawj kauj siv cov hlau enameled tuab, feem ntau yog hais txog {{{0}}}.5-1 hli enameled xaim li ntawm 200-500 lem, thiab cov coil thib ob siv cov xaim nyias nyias, feem ntau siv li ntawm 0.1. mm enameled hlau rau li 15000-25000 tig. Ib qho kawg ntawm thawj kauj yog txuas nrog lub tshuab hluav taws xob qis (+) ntawm lub tsheb, thiab lwm qhov kawg yog txuas nrog lub switchgear (txiav tawm). Ib qho kawg ntawm ob lub kauj kauj yog txuas nrog lub hauv paus kauj, thiab lwm qhov kawg yog txuas nrog cov zis kawg ntawm cov kab hluav taws xob siab kom tso tawm hluav taws xob high-voltage.
Yog vim li cas vim li cas qhov hluav taws xob hluav taws xob tuaj yeem tig hluav taws xob qis ntawm lub tsheb mus rau hauv qhov hluav taws xob siab yog tias nws muaj tib daim ntawv zoo li lub tshuab hluav taws xob zoo tib yam, thiab cov kauj ruam tseem ceeb muaj ntau qhov hloov pauv ntau dua li cov kauj ruam thib ob. Txawm li cas los xij, qhov hluav taws xob hluav taws xob ua haujlwm nyob rau hauv ib txoj kev sib txawv dua li cov transformer zoo tib yam, kev ua hauj lwm zaus ntawm lub transformer zoo tib yam yog tsau 50Hz, los yog lub hwj chim zaus transformer, thiab lub ignition kauj ua hauj lwm nyob rau hauv daim ntawv ntawm pulses, uas yuav tsum tau saib raws li lub hwj chim zaus transformer. pulse transformer, uas pheej rov ua lub zog cia thiab tso tawm ntawm ntau zaus raws li qhov sib txawv ntawm lub cav.
Thaum lub hauv paus coil txuas nrog lub hwj huam mov, ib qho chaw sib nqus muaj zog yog tsim nyob ib ncig ntawm kev loj hlob tam sim no, thiab cov tub ntxhais hlau khaws cov hlau nplaum lub zog; Thaum lub switching ntaus disconnects thawj kauj Circuit Court, lub magnetic teb ntawm thawj kauj yuav decays sai, thiab lub thib ob kauj yuav induce ib tug high voltage. Qhov nrawm dua ntawm qhov sib nqus ntawm cov kauj ruam tseem ceeb ploj mus, qhov ntau dua tam sim no ntawm kev sib txuas tam sim no, thiab qhov loj dua qhov sib piv ntawm ob lub coils, qhov siab dua qhov voltage induced los ntawm cov kauj thib ob.