Qhov sib txawv ntawm Ferrite Tub Ntxhais Thiab Hlau Hmoov Tub Ntxhais

1. Ferrite tub ntxhais yog hlau ferromagnetic hlau oxide. Raws li qhov pom ntawm cov hluav taws xob muaj kev txhawj xeeb, qhov tsis kam ntawm ferrite yog loj dua li ntawm cov hlau thiab cov hlau nplaum sib nqus cov ntaub ntawv, thiab nws kuj muaj lub zog dielectric ntau dua. Cov cuab yeej sib nqus ntawm ferrites kuj qhia tau hais tias muaj kev cuam tshuam zoo ntawm kev tso tawm ntau. Yog li no, ferrite tau dhau los ua cov khoom siv dav hlau tsis siv hlau nyob hauv qhov chaw ntawm qhov chaw siab thiab cov hluav taws xob tsis muaj zog. Ferrite muaj cov saturation magnetization tsawg tsawg (feem ntau tsuas yog 1 / 3-1 / 5 ntawm cov hlau ntshiab), uas txwv nws daim ntawv thov nyob rau hauv kev siv ntau lub zog tsawg thiab cov chaw muaj zog uas xav tau lub zog sib nqus loj.

2. Hlau hmoov tub ntxhais yog lub sij hawm nrov rau cov khoom siv hlau nplaum Fe3O4, uas yog siv los daws cov teeb meem electromagnetic (EMC) teeb meem hauv hluav taws xob. Hauv cov ntawv thov siv, ntau yam sib txawv ntawm lwm yam tshuaj yuav raug ntxiv raws li qhov sib txawv rau kev lim hauv cov kab sib txawv.

Electromagnetic compatibility (EMC) yog hais txog qhov swb uas tsim los ntawm ntau qhov laj thawj hauv hluav taws xob. Cov clutters no tsis tsuas yog tsim kev puas tsuaj rau kev ua haujlwm ib txwm ntawm hluav taws xob, tab sis kuj tsim kev puas tsuaj rau tib neeg lub cev rau qee yam. Yog li no, cov teb chaws (tshwj xeeb yog cov European Union) muaj ntau cov kev cai ntawm no, uas yog electromagnetic compatibility (EMC).

Qhov swb ntawm cov hlau tsuas yog daws nws qhov teeb meem EMC los ntawm cov hlau nplaum sib txuas. Thaum qee txoj hlua khi khoo hla ntawm qhov tseem ceeb, cov yam ntxwv ntawm lub tshuab hluav taws xob ua rau lub cev tam sim no hauv pawg no hloov mus rau hauv lub zog sib nqus thiab ib feem ntawm cov cua sov uas tau noj. Yuav kom ua tiav lub hom phiaj ntawm kev txo khoom swb.

3. Ferrite core rau hom hom, hlau hmoov rau qhov sib txawv, thiab sib nqus permeability ntawm hlau hmoov yog me dua li ntawm ferrite; cov tub ntxhais hlau muaj xws li ferrite, thiab cov hmoov hlau tseem ceeb suav nrog MPP, HF, SENDUST ferrite rau qhov muaj ntau zaus tab sis tsis yog DC, thiab cov hmoov hlau tub ntxhais rau qhov tsawg zaus tuaj yeem yog DC.

4. Qhov loj tshaj plaws ntawm ferrite mos magnetism yog tias nws muaj qhov siab permeability thiab resistivity (102-106_.cm) ntawm qhov muaj ntau zaus, tab sis nws cov Bs muaj tsawg dua li ntawm cov khoom siv hlau, yog li nws tsuas yog siv ntawm lub zog qis. Lub zog sib nqus hmoov cia li ua tiav ntawm qhov sib txawv ntawm cov hlau mos hlau sib nqus cov khoom siv thiab ferrite. Feem ntau, kev siv zaus los ntawm qis mus rau siab yog hlau hlau hmoov hmoov tub ntxhais ferrite, thiab lub zog ntawm lub zog los ntawm qis mus rau siab yog ferrite sib nqus hmoov tub ntxhais hlau.

Ferrite, raws li cov khoom siv sib nqus ntau yam khoom siv, tuaj yeem ua rau ntau yam khoom siv hluav taws xob. Tam sim no, cov neeg tsim qauv tsim hluav taws xob muaj zog tshaj plaws nyob hauv Suav teb tau paub nrog ferrite, tab sis lawv tsis tau paub dua nrog cov hlau sib nqus hmoov cores.

Hais lus nruj me ntsis, hlau nplaum hlau hmoov av cores tshwj xeeb hauv kev tsim cov khoom siv dag zog. Qhov sib txawv ntawm cov hlau nplaum hmoov sib txawv thiab ferrites muaj nyob hauv qab.

1) Hlau sib nqus hmoov cores muaj qhov siab dua Bs thiab qis dua permeability. Nyob rau tib lub sijhawm, sib nqus bias nkhaus yog quasi-linear, thiab tuaj yeem tiv taus DC kev tsis ncaj ncees, vim hais tias qhov tseem ceeb tsis yooj yim rau saturate.

2) Cov teeb tsa sib cais ntawm cov huab cua sib txawv hauv cov hlau sib nqus cov hmoov hlau tuaj yeem zam qhov chaw hauv zos los ntawm kev qhib ntawm huab cua sib txawv.

3) Cov hlau hlau hmoov sib xyaw ua ke maj mam ntau dua li cov ferrites rau kev hloov pauv ib puag ncig (hloov kub thiab hloov tshuab kev cuam tshuam), uas yog txiav txim siab los ntawm cov yam ntxwv ntawm cov hlau thiab cov ntaub ntawv ceramic. Lub qub muaj qhov kub thiab txias Curie, thiab nws cov permeability hloov me me hauv chav ua haujlwm, yog li nws txoj kev ntseeg tau zoo dua li qhov ua rau tom kawg. Qhov no kuj yog vim li cas vim li cas hlau hlau hmoov sib txuas yog siv dav hauv kev lag luam tub rog. Ua hauj lwm kub ntau ntawm cov hlau sib nqus hmoov tub ntxhais yog qhov dav dua li ntawm cov ferrite, thiab qee cov ntaub ntawv tuaj yeem ua haujlwm ntawm 300 C.

4) Tus qauv tsim ntawm cov hlau sib nqus hmoov tub ntxhais yog qhov yooj yim, tshwj xeeb hauv kev tsim hluav taws xob txhawm chim, nws yuav luag tsis tas yuav sim ntsuas qhov ntsuas qhov tseem ceeb kom paub tseeb qhov qauv. Vim tias qhov kev ntsuas tsis zoo ntawm cov khoom siv ferrite, tsim cov qauv sib txawv yog xav tau rau cov xwm txheej sib txawv, thiab kev ntsuam xyuas dynamic xav tau.

Lub permeability ntawm ferrite core yog ntau tshaj li uas ntawm cov hlau hmoov tub ntxhais. Nws feem ntau siv hauv kev tsim cov loj zaus transformer thiab hom hom inductor. Muaj ntau qhov khoob hauv cov hlau hmoov tub ntxhais raws li cov huab cua sib txawv ntawm cov sib nqus cov tub ntxhais, uas feem ntau siv rau lub zog cia inductance thiab txawv hom tsis sib xws.

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