Vim li cas cov inductors kuj muaj qhov yuav tsum tau nyob deb ntawm kev nyab xeeb?

Thawj: Lub Teeb ntawm Cov Khoom Siv

Lub luag haujlwm tseem ceeb ntawm inductance hauv circuits yog lim dej, feem ntau yog rau kev ua cov teeb liab. Vim li cas thiaj muaj qhov yuav tsum tau nyob deb ntawm kev nyab xeeb thaum ua daim ntawv pov thawj? Tsab xov xwm no yuav muab cov lus teb rau lo lus nug no.

Qhov tseeb, rau cov voj voog dav dav, tsis muaj qhov yuav tsum tau ua kom meej meej rau qhov kev nyab xeeb ntawm cov inductors. Lawv tsuas yog yuav tsum ua kom tau raws li qhov yuav tsum tau ua kom muaj hluav taws xob rwb thaiv tsev yooj yim, thiab cov khoom yuav tsis luv luv tom qab ua haujlwm ntev.
Thaum kuaj cov inductors, peb feem ntau sim qhov voltage tsis kam ntawm windings rau windings lossis windings rau magnetic cores, feem ntau nyob ib ncig ntawm 500VAC.

Txawm li cas los xij, yog tias cov inductors raug siv rau hauv cov xwm txheej ntawm lub voj voog siab, nws yuav txawv. Hauv cov voj voog siab, qhov sib nrug ntawm cov pins inductor feem ntau yuav tsum ua raws li qhov sib txawv ntawm hluav taws xob thiab cov qauv creepage nrug kom tsis txhob muaj cov voj voog luv luv lossis kev tso tawm.
Raws li tus qauv IEC60950, cov theem hluav taws xob sib txawv sib raug rau qhov deb tsawg kawg nkaus sib txawv. Thaum lub voj voog hluav taws xob 400V tsis raug qhov, qhov sib txawv hluav taws xob ntawm cov pins inductor yuav tsum yog ≥ 6.4 hli.

Hais txog qhov deb ntawm qhov nkag mus, rau 220V circuits, qhov deb ntawm qhov nkag mus ntawm FR4 substrate yuav tsum yog ≥ 4.0 hli. Rau cov inductors siab-voltage, xws li cov uas nyob ib sab ntawm lub transformer tseem ceeb ntawm lub zog hloov pauv, qhov deb ntawm kev rwb thaiv tsev ntawm ≥ 8.0 hli yog qhov yuav tsum tau ua.
Thaum qhov kub ua haujlwm ntawm lub inductor siab heev, qhov kev nyab xeeb deb tuaj yeem nce ntxiv kom tsim nyog los them rau kev laus ntawm cov khoom siv rwb thaiv tsev los ntawm kev siv lub sijhawm ntev ntawm lub inductor.

Hauv cov txheej txheem ntawm kev tsim lub voj voog, yog tias qhov deb ntawm creepage tsis txaus, slotting kuj tseem siv tau los ua kom tau raws li qhov yuav tsum tau ua. Rau kev xaiv cov ntaub ntawv inductor, nws yog qhov tsim nyog los siv cov pob txha uas tiv taus hluav taws thiab nplaim taws, hlau enameled uas tiv taus kub siab, thiab daim kab xev rwb thaiv tsev uas tau ntawv pov thawj kev nyab xeeb kom ntseeg tau tias ua raws li cov qauv kev nyab xeeb thiab cov kev cai.
Zuag qhia tag nrho, qhov yuav tsum tau muaj kev nyab xeeb rau cov inductors yog qhov tseem ceeb los tiv thaiv kev phom sij ntawm kev nyab xeeb los ntawm kev puas tsuaj hluav taws xob, kev xau, thiab kev ua tsis tiav ntawm cov rwb thaiv tsev. Qhov no tuaj yeem xa mus rau cov qauv xws li IEC 60950 thiab UL 60950, thiab tau tsim los ntawm cov theem hluav taws xob, cov chaw ua haujlwm, thiab cov yam ntxwv ntawm cov khoom siv kom ntseeg tau tias kev sim thiab daim ntawv pov thawj dhau.