Yuav ua li cas txhim kho lub suab nrov ntawm flyback switching fais fab mov
Lub suab nrov feem ntau yog hais txog lub suab teeb liab nrog qhov zaus ntawm 20-20kHz tsim los ntawm lub zog hloov hluav taws xob nws tus kheej hauv kev ua haujlwm, uas tuaj yeem hnov los ntawm tib neeg lub pob ntseg, tshwj xeeb tshaj yog thaum nws yog 2-40kHz, raws li qhia nyob rau hauv cov nram qab no sib npaug- teb nkhaus 1. Thaum oscillation zaus ntawm hluav taws xob thiab sib nqus Cheebtsam nyob rau hauv lub rooj sib hais ntawm tib neeg pob ntseg, lawv yuav tsim audible signals. Qhov tshwm sim no tau paub nyob rau theem pib ntawm kev tshawb fawb hloov hluav taws xob. Transformers kev khiav hauj lwm ntawm 50 thiab 60Hz fais fab zaus feem ntau tsim AC suab nrov. Yog hais tias lub load yog modulated los ntawm lub Cheebtsam, lub switching zog converter kev khiav hauj lwm ntawm ib tug tas li ultrasonic zaus kuj yuav ua suab nrov. Daim ntawv no ua ntej qhia txog qhov ua rau ntawm kev hloov hluav taws xob lub suab nrov, thiab tom qab ntawd nthuav tawm cov kev daws teeb meem los txhim kho lub suab nrov ntawm flyback switching fais fab mov.
Yuav ua li cas txhim kho lub suab nrov ntawm flyback switching fais fab mov
1. Kev tsim qauv zoo suppresses suab nrov.
Nyob rau hauv tus txheej txheem tsim, engineers yuav ntxiv kev nqus circuits ntawm ob qhov kawg ntawm lub teb cov nyhuv transistor DS kom txo tau lub ncov, uas yuav ua tau zoo txo cov suab nrov ntawm lub hwj chim module.
Hauv kev siv tswv yim, cov zis ripple thiab suab nrov ntawm lub module tuaj yeem raug txo qis ntxiv los ntawm kev ntxiv cov capacitors rau cov tswv yim thiab cov zis terminals ntawm lub module thiab koom tes nrog ib tug zoo PCB layout. Kev teeb tsa ntawm PCB pawg thawj coj saib, qhov tso tawm capacitor raws li cov kev taw qhia ntws tam sim no, thiab lub suab nrov ntawm lub zog module tsis muaj teeb meem ntxiv lawm. Cov duab hauv qab no qhia ob txoj hauv kev layout.
2, transformer suab nrov daws teeb meem
Ua ntej, lub transformer yuav tsum tau soaked uniformly, thiaj li ua tau zoo nyob rau hauv lub hauv paus ntawm qhov sib txawv ntawm coils, nruab nrab ntawm coils thiab skeleton, thiab nruab nrab ntawm lub cev pob txha thiab sib nqus core, thiab txo qhov muaj peev xwm ntawm kev txav ntawm qhov chaw. Yog tias tsim nyog, qhov chaw sib txuas ntawm cov khoom sib nqus thiab lub rooj tsav xwm hauv Circuit Court tuaj yeem ua tiav nrog cov kua nplaum dawb los yog txau nrog cov xim peb-pov thawj, ntxiv kom txo tau qhov chaw ntawm cov neeg kho tshuab kev co thiab txo cov suab nrov.
Yog tias cov xwm txheej tso cai, lub ncov sib nqus flux ceev yuav tsum raug txo kom ntau li ntau tau, qhov sib nqus sib nqus flux ntom ntom ntawm qhov kub siab yuav tsum tau txiav txim siab tag nrho, thiab cov npoo txaus yuav tsum tau sab laug kom tiv thaiv kev ua haujlwm nkhaus los ntawm kev nkag mus rau thaj tsam nonlinear, uas tuaj yeem ua tau zoo. txo lub suab nrov ntawm lub transformer. Cov kev sim tau ua pov thawj tias lub suab nrov tawm tuaj yeem raug txo los ntawm 5dB mus rau 15dB thaum lub ncov sib nqus flux ceev yog txo los ntawm 3,000 Gauss mus rau 2,000 Gauss.
Cov xwm txheej tso cai siv cov khoom sib nqus mos xws li amorphous thiab ultra-microcrystalline alloys. Lawv qhov sib nqus sib nqus zoo dua li cov ferrites zoo tib yam, thiab lawv cov nyhuv magnetostrictive nyhav rau xoom, yog li lawv tsis hnov qab txog kev ntxhov siab.
3. Kev daws teeb meem dav dav rau lub suab nrov capacitive
Qhov kev daws teeb meem yog los hloov lub high-voltage ceramic capacitor siv nyob rau hauv lub nqus Circuit Court nrog ib tug polyester zaj duab xis capacitor nrog me ntsis electrostrictive nyhuv, uas yuav yeej tshem tawm cov suab nrov generated los ntawm lub capacitor.
Txhawm rau txiav txim siab seb puas yog ceramic capacitance yog lub suab nrov nrov, nws tuaj yeem hloov tau los ntawm cov capacitors ntawm cov insulators sib txawv. Nyias zaj duab xis capacitor yog ib tug nqi-zoo hloov. Txawm li cas los xij, kev saib xyuas yuav tsum tau them rau seb qhov kev hloov pauv tuaj yeem tiv taus qhov siab tshaj tam sim no thiab qhov kev ntxhov siab.
Lwm qhov kev xaiv nrog tus nqi sib tw yog siv Zener clamp Circuit Court es tsis txhob RCD clamp Circuit Court. Tus nqi ntawm Zener clamp yog piv rau ntawm RCD clamp, tab sis nws siv ntau qhov chaw tsawg dua thiab ua haujlwm tau zoo dua.
