PCB ib txwm tsim tam sim no tsis tshaj 10A, tshwj xeeb tshaj yog nyob rau hauv tsev neeg thiab cov neeg siv khoom siv hluav taws xob, feem ntau qhov ua haujlwm tsis tu ncua ntawm PCB tsis tshaj 2A.

Txawm li cas los xij, qee cov khoom tsim los rau kev xaim hluav taws xob, thiab qhov tam sim no txuas mus txog 80A.Xav txog qhov tam sim no tam sim no thiab tawm hauv cov npoo rau tag nrho cov kab ke, qhov txuas tam sim no ntawm lub zog hluav taws xob yuav tsum muaj peev xwm tiv taus ntau tshaj 100A.

Tom qab ntawd lo lus nug yog, dab tsi ntawm PCB tuaj yeem tiv taus qhov tam sim no ntawm 100A?

Txoj Kev 1: Layout ntawm PCB

Txhawm rau txheeb xyuas qhov muaj peev xwm dhau tam sim no ntawm PCB, peb thawj zaug pib nrog cov qauv PCB.Siv ob txheej txheej PCB ua piv txwv.Hom kab hluav taws xob no feem ntau muaj peb txheej txheej: tooj liab daim tawv nqaij, phaj, thiab daim tawv nqaij tooj liab.Cov tawv nqaij tooj liab yog txoj hauv kev uas tam sim no thiab teeb liab hauv PCB dhau.

Raws li kev paub txog lub tsev kawm ntawv theem nrab physics, peb tuaj yeem paub tias qhov kev tawm tsam ntawm ib qho khoom muaj feem xyuam nrog cov khoom, qhov chaw hla ntu, thiab qhov ntev.Txij li thaum peb tam sim no khiav ntawm daim tawv nqaij tooj liab, lub resistivity yog tsau.Qhov chaw hla ntu tuaj yeem suav tau tias yog qhov tuab ntawm cov tawv nqaij tooj liab, uas yog cov tooj liab tuab hauv cov kev xaiv ntawm PCB.

Feem ntau tooj liab thickness yog qhia nyob rau hauv OZ, tooj liab thickness ntawm 1 OZ yog 35 um, 2 OZ yog 70 um, thiab hais txog.Tom qab ntawd nws tuaj yeem txiav txim siab tau yooj yim tias thaum lub sijhawm loj tam sim no yuav dhau los ntawm PCB, cov xaim yuav tsum luv thiab tuab, thiab qhov tuab ntawm tooj liab ntawm PCB, qhov zoo dua.

Qhov tseeb, hauv engineering, tsis muaj tus qauv nruj rau qhov ntev ntawm kev xaim.Feem ntau siv hauv engineering: tooj liab thickness / kub nce / xaim inch, peb qhov ntsuas no ntsuas lub peev xwm nqa tam sim no ntawm PCB pawg thawj coj saib.