High Inductance Sendust Core Sendust Block Core Siab Permeability

Sendust yog cov hmoov hlau hlau sib nqus uas tau tsim los ntawm Hakaru Masumoto ntawm Tohoku Imperial University hauv Sendai, Nyiv, txog 1936 ua lwm txoj hauv kev permalloy hauv inductor daim ntawv thov rau kev sib txuas hauv xov tooj.Sendust muaj pes tsawg leeg feem ntau yog 85% hlau, 9% silicon thiab 6% aluminium.Cov hmoov yog sintered rau hauv cores los tsim inductors.Sendust cores muaj siab sib nqus permeability (txog 140 000), tsis tshua muaj poob, tsis tshua muaj coercivity (5 A / m) zoo kub stability thiab saturation flux ceev txog li 1 T.
Vim nws cov tshuaj muaj pes tsawg leeg thiab crystallographic qauv Sendust nthuav tawm ib txhij xoom magnetostriction thiab xoom magnetocrystalline anisotropy tas li K1.
Sendust yog ib qho nyuaj tshaj li permalloy, thiab yog li no muaj txiaj ntsig zoo hauv kev siv abrasive xws li cov ntaub ntawv sib nqus.

Yuav ua li cas xaiv cov hmoov cores uas muaj qhov sib txawv ntawm huab cua los siv hauv kev tsim lub zog inductors thiab chokes

Taw qhia

Daim ntawv qhia no nthuav tawm qee cov lus qhia dav dav rau qhov kev xaiv zoo tshaj plaws ntawm cov khoom siv hmoov (MPP, Sendust, Kool Mu®, High Flux lossis Iron Powder) rau qhov sib txawv inductor, choke thiab lim tsim.Kev xaiv ntawm ib hom khoom dua lwm tus feem ntau nyob ntawm cov hauv qab no:
1) DC Bias tam sim no los ntawm inductor
2) Ambient Kev Ua Haujlwm Kub thiab qhov ntsuas kub tau nce.Ambient kub ntawm tshaj 100 ° C yog tam sim no heev heev.
3) Kev txwv qhov loj thiab mounting txoj kev (los ntawm lub qhov los yog nto mount)
4) Tus nqi: hlau hmoov yog qhov pheej yig tshaj plaws thiab MPP, qhov loj tshaj plaws.
5) Kev ruaj ntseg hluav taws xob ntawm cov tub ntxhais nrog kub hloov pauv
6) Muaj cov khoom tseem ceeb.Piv txwv li, Micrometals #26 thiab #52 feem ntau muaj los ntawm Tshuag.Feem ntau muaj MPP cores yog 125 permeability cov ntaub ntawv, thiab lwm yam.

Raws li qhov tshwm sim ntawm kev nce qib hauv kev siv tshuab ferromagnetic tsis ntev los no, kev xaiv ntau dua ntawm cov ntaub ntawv tseem ceeb rau kev tsim kho kom zoo yog tam sim no muaj.Rau cov khoom siv hluav taws xob hloov pauv (SMPS), inductors, chokes thiab lim, cov ntaub ntawv raug yog MPP (molypermalloy hmoov), High Flux, Sendust, thiab Iron Powder cores.Txhua yam khoom siv hluav taws xob saum toj no muaj cov yam ntxwv ntawm tus kheej tsim nyog rau kev siv sib txawv.
Cov neeg tsim khoom ntawm cov hmoov cores saum toj no yog:
1) Micrometals rau hlau hmoov cores.Tsuas yog Micrometals cores raug kuaj rau thermal stability thiab CWS tsuas yog siv Micrometals cores hauv tag nrho nws cov qauv.
2) Magnetics Inc, Arnold Engineering, CSC, thiab T / T Electronics rau MPP, Sendust (Kol Mu®), thiab High Flux cores
3) TDK, Tokin, Toho rau Sendust Cores

Nrog hmoov cores, siab permeability khoom yog av los yog atomized rau hauv hmoov.Lub permeability ntawm cov cores yuav nyob ntawm seb qhov luaj li cas thiab qhov ntom ntawm cov khoom permeability siab.Kev hloov ntawm qhov loj me thiab qhov ntom ntawm cov khoom no ua rau muaj qhov sib txawv permeability ntawm cov cores.Qhov me me me me, qhov qis dua permeability thiab zoo dua DC bias yam ntxwv, tab sis ntawm tus nqi siab dua.Cov hmoov hmoov ib leeg yog rwb thaiv tsev los ntawm ib leeg, tso cai rau cov cores kom muaj qhov sib txawv ntawm huab cua sib txawv rau lub zog cia hauv inductor.

Qhov kev faib tawm ntawm huab cua sib txawv no ua kom ntseeg tau tias lub zog khaws cia sib npaug los ntawm cov tub ntxhais.Qhov no ua rau cov tub ntxhais muaj qhov kub thiab txias zoo dua.Gapped lossis slitted ferrites khaws lub zog hauv qhov sib txawv ntawm cov huab cua hauv cheeb tsam tab sis muaj ntau ntau cov dej ntws ua rau hauv cheeb tsam poob thiab cuam tshuam.Qee zaum, qhov kev poob no vim qhov sib txawv hauv cheeb tsam tuaj yeem tshaj qhov poob ntawm nws tus kheej.Vim qhov xwm txheej hauv cheeb tsam ntawm huab cua sib txawv nyob rau hauv gapped ferrite core, nws tsis pom zoo kub stability.

Qhov kev xaiv zoo tshaj plaws yog xaiv cov khoom siv zoo tshaj plaws nrog kev sib haum xeeb me ntsis thaum ua tau raws li tag nrho cov hom phiaj tsim.Yog tias tus nqi yog qhov tseem ceeb, cov hmoov hlau yog qhov kev xaiv.Yog tias qhov kub thiab txias yog qhov kev txhawj xeeb tseem ceeb, MPP yuav yog thawj qhov kev xaiv.Cov yam ntxwv ntawm txhua hom khoom yog tham luv luv.
Tag nrho 3 hom hmoov cores tuaj yeem yuav hauv online hauv ntim me me los ntawm Tshuag (tam sim xa tuaj) ntawm lub vev xaib hauv qab no: www.cwsbytemark.com.Cov ntaub ntawv xov xwm ntxiv ntawm cov ntaub ntawv no tuaj yeem pom hauv www.bytemark.com

MPP (Molypermalloy Powder Cores)
Composition: Mo-Ni-Fe

MPP cores muaj qhov qis tshaj tag nrho cov tub ntxhais poob thiab qhov ntsuas kub zoo tshaj plaws.Feem ntau, inductance variance nyob rau hauv 1% mus txog 140 deg C. MPP cores muaj nyob rau hauv thawj permeabilities (µi) ntawm 26, 60, 125, 160, 173, 200, thiab 550. MPP muaj siab resistivity, tsis tshua muaj hysteresis thiab eddy tam sim no poob, thiab zoo heev inductance stability nyob rau hauv DC bias thiab AC tej yam kev mob.Nyob rau hauv AC excitation, inductance hloov nyob rau hauv 2% (zoo heev) rau µi = 125 cores ntawm AC flux ceev ntawm ntau tshaj 2000 gauss.Nws tsis saturate yooj yim ntawm siab DC magnetization los yog DC bias mob.Lub saturation flux ceev ntawm MPP core yog kwv yees li 8000 gauss (800 mT)

Piv nrog rau lwm cov ntaub ntawv, MPP cores yog tus nqi kim tshaj plaws, tab sis qhov zoo tshaj plaws ntawm cov tub ntxhais poob thiab ruaj khov.Rau daim ntawv thov cuam tshuam nrog DC kev tsis ncaj ncees, siv cov lus qhia hauv qab no.Kom tau txais tsawg dua 20% txo qis hauv qhov pib permeability nyob rau hauv DC bias mob: - Rau µi = 60 cores, max.DC bias <50 oersted;µi = 125, max.DC bias <30 oersted;µi = 160, max.DC bias <20 oersted.

Cov yam ntxwv tshwj xeeb

1.Lowest core poob ntawm tag nrho cov ntaub ntawv hmoov.Tsawg hysteristics poob uas ua rau qis teeb liab distortion thiab qis seem poob.
2.Qhov zoo tshaj plaws kub stability.Tsawg dua 1%.
3.Qhov siab tshaj plaws saturation flux ceev yog 8000 gauss (0.8 tesla)
4.Inductance kam rau ua: + - 8%.(3% ntawm 500 Hz txog 200 Khz)
5.Feem ntau yog siv nyob rau hauv aerospace, tub rog, kev kho mob thiab kub daim ntawv thov.
6.Qhov yooj yim muaj raws li comapred rau siab flux thiab sendust.
Daim ntawv thov:
High Q lim, loading coils, resonant circuits, RFI lim rau frequencies hauv qab 300 kHz, transformers, chokes, txawv hom lim, thiab DC biased tso zis lim.

High Flux Cores
Cov khoom xyaw: Ni-Fe

High Flux cores yog tsim los ntawm compacted 50% nickel thiab 50% hlau alloy hmoov.Cov khoom siv hauv paus zoo ib yam li cov nickel hlau lamination nyob rau hauv daim kab xev qhov txhab.High Flux cores muaj peev xwm khaws cia ntau dua, thiab ntau dua saturation flux ceev.Lawv saturation flux ceev yog nyob ib ncig ntawm 15,000 gauss (1500 mT), hais txog tib yam li hlau hmoov cores.High Flux cores muab cov tub ntxhais poob qis dua li Sendust.Txawm li cas los xij, High Flux's core poob yog siab dua li MPP cores.High Flux cores feem ntau yog siv rau hauv daim ntawv thov qhov twg DC bias tam sim no siab.Txawm li cas los xij, nws tsis yog yooj yim muaj xws li MPP lossis Sendust, thiab txwv tsis pub nws cov kev xaiv permeability lossis kev xaiv loj.
Daim ntawv thov:

1) Nyob rau hauv kab Noise lim qhov inductor yuav tsum txhawb nqa loj AC voltages tsis muaj saturation.

2) Hloov Regulators Inductors los tswj cov nyiaj ntau ntawm DC kev tsis ncaj ncees tam sim no

3) Pulse Transformers thiab Flyback Transformers raws li nws cov residual flux ntom yog zero gauss.Nrog rau qhov saturation flux ceev ntawm 15K gauss, lub usable flux ceev (los ntawm xoom mus rau 15K gauss) yog qhov zoo tagnrho rau unipolar tsav daim ntaub ntawv xws li mem tes transformer thiab flyback transformers.

Kool Mu® / SENDUST
Cov khoom xyaw: Al-Si-Fe

Sendust cores tseem hu ua Kool Mu® los ntawm Magnetics Inc., Sendust cov khoom siv thawj zaug hauv Nyij Pooj hauv thaj chaw hu ua Sendai, thiab nws tau hu ua ' plua plav' tub ntxhais, thiab yog li lub npe Sendust.Feem ntau, sendust cores muaj qhov poob qis dua li cov hlau hmoov cores, tab sis muaj qhov poob siab dua li MPP cores.Piv nrog rau cov hmoov hlau, xaust core poob yuav tsawg li 40% mus rau 50% ntawm hlau hmoov core poob.Sendust cores kuj nthuav tawm qhov sib nqus magnetostriction qis heev, thiab nws yog li tsim nyog rau cov ntawv thov uas xav tau suab nrov tsawg.Sendust cores muaj saturation flux ceev ntawm 10,000 gauss uas yog qis dua hlau hmoov.Txawm li cas los xij, sendust muaj lub zog cia ntau dua li MPP lossis gapped ferrites.

Sendust cores muaj nyob rau hauv thawj permeabilities (Ui) ntawm 60 thiab 125. Sendust cores muaj kev hloov me me ntawm permeability lossis inductance (hauv qab 3% rau ui = 125) nyob rau hauv AC excitation.Kub stability yog zoo heev nyob rau hauv siab kawg.Kev hloov pauv inductance tsawg dua 3% los ntawm ambient mus rau 125 deg C. Txawm li cas los xij, raws li qhov kub thiab txias txo mus rau 65 deg C, nws inductance poob li ntawm 15% rau µi = 125.Tsis tas li ntawd nco ntsoov tias thaum kub nce, sendust pom qhov txo qis hauv inductance piv rau qhov nce hauv inductance rau tag nrho lwm cov ntaub ntawv hmoov.Qhov no tuaj yeem yog qhov kev xaiv zoo rau kev them nyiaj kub, thaum siv nrog lwm cov ntaub ntawv hauv cov qauv sib xyaw.

Sendust cores raug nqi tsawg dua MPPs lossis high fluxes, tab sis me ntsis kim dua hlau hmoov cores.Rau daim ntawv thov cuam tshuam nrog DC kev tsis ncaj ncees, siv cov lus qhia hauv qab no.Txhawm rau kom tau qis dua 20% txo qis hauv qhov pib permeability nyob rau hauv DC bias mob:

Rau µi = 60 cores, max.DC bias <40 oersted;µi = 125, max.DC bias <15 oersted.

Cov yam ntxwv tshwj xeeb

1.Cov tub ntxhais poob qis dua li Hlau Hmoov.
2.Low magnetostriction coefficient, tsis tshua muaj suab nrov.
3.Zoo kub stability.Hauv qab 4% ntawm -15 'C txog 125'C
4.Maximum flux ceev: 10,000 gauss (1.0 tesla)
5.Inductance kam rau ua: ± 8%.
Daim ntawv thov:
1.Switching regulators lossis Power Inductors hauv SMPS
2.Fly-rov qab thiab Pulse transformers (inductors)
3.In-Line suab nrov lim
4.Swing chokes
5.Phase tswj circuits (tsis muaj suab nrov) lub teeb dimmers, lub cev muaj zog tswj cov khoom siv.
Hlau hmoov
Cov khoom xyaw: Fe

Hlau hmoov yog tus nqi zoo tshaj plaws ntawm tag nrho cov hmoov cores.Nws muab tus nqi tsim qauv rau MPP, High Flux lossis Sendust cores.Nws cov tub ntxhais poob siab dua ntawm tag nrho cov khoom siv hmoov tuaj yeem raug them los ntawm kev siv cov cores loj dua.Hauv ntau daim ntawv thov, qhov chaw thiab qhov kub siab dua hauv cov hlau hmoov cores yog qhov tsis tseem ceeb piv rau kev txuag nyiaj hauv cov nqi, hlau hmoov cores muaj cov tshuaj zoo tshaj plaws.Iron Powder cores muaj nyob rau hauv 2 chav kawm: carbonyl hlau thiab hydrogen txo hlau.Carbonyl hlau muaj qhov poob qis dua thiab nthuav tawm siab Q rau daim ntawv thov RF.

Iron Powder cores muaj nyob rau hauv permeabilities ntawm 1 txog 100. Cov ntaub ntawv nrov rau kev siv SMPS yog #26 (µi = 75), # 8/90 (µi = 35), # 52 (µi = 75) thiab # 18 (µi = 55).Hlau hmoov cores muaj saturation flux ceev ntawm 10,000 rau 15,000 gauss.Hlau hmoov cores yog ruaj khov nrog kub.Cov khoom siv # 26 muaj qhov kub thiab txias ntawm 825 ppm / C (inductance hloov ntawm kwv yees li 9% nrog qhov kub thiab txias hloov mus txog l25 ° C). Cov khoom # 52 yog 650 PPM / C (7%).Cov khoom siv # 18 yog 385 PPM / C (4%), thiab # 8/90 khoom yog 255 PPM / C (3%).

Hlau hmoov cores yog qhov zoo tagnrho hauv kev siv qis dua.Txij li thaum lawv cov hysteresis thiab eddy tam sim no core poob siab dua, qhov kev khiav hauj lwm kub yuav tsum raug txwv rau qis dua 125 ° C.

Rau daim ntawv thov cuam tshuam nrog DC kev tsis ncaj ncees, cov lus qhia hauv qab no raug pom zoo.Txhawm rau kom tau qis dua 20% txo qis hauv qhov pib permeability nyob rau hauv DC bias mob:

Rau cov khoom #26, max DC bias <20 oersteds;
Rau cov khoom #52, max DC bias < 25 oersteds;
Rau cov khoom #18, max DC bias <40 oersteds;
Rau cov khoom #8/90, max DC bias <80 oersteds.

Cov yam ntxwv tshwj xeeb

1. Tus nqi qis tshaj.
2.Zoo rau kev siv tsawg zaus (<10OKhz).
3.Qhov siab tshaj plaws flux ceev: 15,000 gauss
4.Inductance kam rau ua ± 10%
Daim ntawv thov:
1. Lub zog cia inductor
2. Tsawg zaus DC tso zis chokes
3.60 Hz txawv hom EMI Kab Chokes
4. Lub teeb Dimmers Chokes
5.Power Factor kho Chokes.
6.Resonant Inductors.
7.Pulse thiab Fly-backTransformers
8.In-line suab lim lim.Muaj peev xwm tiv taus cov kab loj AC tam sim no yam tsis muaj saturation.
DC Biased Inductor ua haujlwm.
20% Permeability txwv

Nyob rau hauv DC magnetizing tej yam kev mob, tag nrho cov ntaub ntawv hmoov muaj ib tug txo nyob rau hauv permeability raws li qhia nyob rau hauv cov kab kos.Cov ntaub ntawv saum toj no suav tias yog AC flux ceev ntawm 20 gauss.Rau daim ntawv thov xws li tso zis chokes, qhov twg cov inductors yog DC biased, lub magnetization quab yuam (H = 0.4 * PHI * N * l / l) yuav tsum tau xam, thiab tus naj npawb ntawm lem nce mus rau account rau txo nyob rau hauv permeability.Yog hais tias lub magnetization quab yuam (H) xam nyob rau hauv lub siab tshaj plaws DC biased txwv, tus tsim tsuas yog yuav tsum tau nce lub lem los ntawm ntau tshaj 20%.

Tus nqi txheeb ze sib piv cov lus
Tus nqi txheeb ze ntawm txhua yam khoom yog nyob ntawm cov khoom lag luam tus nqi thiab cov nqi raw khoom.Cov lej no yuav tsum tau siv los ua cov lus qhia nkaus xwb.Feem ntau Micrometal's Iron Powder #26 yog tus nqi zoo tshaj plaws, thiab MPPs yog cov khoom siv kim tshaj plaws.
Muaj ntau lub tuam txhab thiab cov neeg xa khoom ntawm cov hmoov hlau hlau cores, thiab feem ntau ntawm lawv tsis pom cov qib zoo li cov uas muaj los ntawm Micrometals.