High Inductance Sendust Core Sendust Block Core High Permeability

ʻO Sendust kahi pauka metala magnetic i hana ʻia e Hakaru Masumoto ma Tohoku Imperial University ma Sendai, Iapana, ma kahi o 1936 ma ke ʻano he ʻokoʻa i ka permalloy i nā noi inductor no nā pūnaewele kelepona.ʻO ka haku mele Sendust he 85% hao, 9% silika a me 6% alumini.Hoʻopili ʻia ka pauka i loko o nā cores e hana i nā inductors.Loaʻa i nā cores Sendust ka permeability magnetic kiʻekiʻe (a hiki i 140 000), haʻahaʻa haʻahaʻa, haʻahaʻa coercivity (5 A/m) maikaʻi ka paʻa wela a me ka saturation flux density a hiki i 1 T.
Ma muli o kona haku mele a me ka crystallographic structure Sendust e hōʻike ana i ka zero magnetostriction a me zero magnetocrystalline anisotropy K1 mau.
ʻOi aku ka paʻakikī o Sendust ma mua o ka permalloy, a no laila pono ia i nā noi abrasive e like me nā poʻo hoʻopaʻa magnetic.

Pehea e koho ai i nā ʻano o ka pauka me nā ʻāpana ea e hoʻohana ai i ka hoʻolālā ʻana i nā inductors mana a me nā chokes.

Hoʻolauna

Ke hōʻike nei kēia alakaʻi noiʻi i kekahi mau alakaʻi maʻamau no ka koho maikaʻi loa o nā mea waiwai pauka (MPP, Sendust, Kool Mu®, High Flux a i ʻole Iron Powder) no nā koi hoʻolālā like ʻole, choke a me kāna kānana.ʻO ke koho ʻana o kekahi ʻano mea ma luna o kekahi e pili pinepine i kēia mau mea:
1) DC Bias i kēia manawa ma o ka inductor
2) Ambient Operating Temperature a ʻae ʻia ka piʻi ʻana o ka mahana.ʻOi aku ka maʻamau maʻamau i kēia manawa ka mahana ambient ma luna o 100 deg C.
3) Ka palena nui a me nā ʻano kau ʻana (ma o ka lua a i ʻole ka mauna ʻili)
4) ʻO nā kumukūʻai: ʻo ka pauka hao ka mea liʻiliʻi loa a me ka MPP, ka mea ākea loa.
5) Paʻa uila o ke kumu me nā loli wela
6) Loaʻa i ka mea kumu.No ka laʻana, loaʻa nui nā Micrometals #26 a me #52 mai ka waihona.ʻO ka mea maʻamau i loaʻa i ka MPP cores ka 125 permeability material, etc.

Ma muli o ka holomua o ka ʻenehana ferromagnetic, ua loaʻa i kēia manawa kahi koho nui o nā mea kumu no ka hoʻolālā hoʻolālā.No ka hoʻololi ʻana i nā lako mana (SMPS), nā inductors, chokes a me nā kānana, ʻo nā mea maʻamau he MPP (molypermalloy powder), High Flux , Sendust, a me ka Iron Powder cores.Loaʻa i kēlā me kēia o nā mea mana o luna i nā hiʻohiʻona ponoʻī kūpono no nā noi like ʻole.
ʻO nā mea hana maʻamau o nā ʻāpana pauka ma luna nei:
1) ʻO Micrometals no nā ʻuala pauka hao.Hoʻāʻo wale ʻia nā cores Micrometals no ke kūpaʻa wela a hoʻohana wale ʻo CWS i nā cores Micrometals i kāna mau hoʻolālā āpau.
2) Magnetics Inc, Arnold Engineering, CSC, a me T/T Electronics no MPP, Sendust (Kool Mu®), a me High Flux cores
3) TDK, Tokin, Toho no Sendust Cores

Me ka pauda cores, kiʻekiʻe permeability mea i lepo a atomized i pauda.ʻO ka permeability o nā cores e hilinaʻi ʻia i ka nui o ka ʻāpana a me ka nui o nā mea permeability kiʻekiʻe.ʻO ka hoʻoponopono ʻana i ka nui o ka ʻāpana a me ka nui o kēia mea e alakaʻi ai i ka permeability like ʻole o nā cores.ʻO ka liʻiliʻi o ka nui o ka ʻāpana, ʻoi aku ka haʻahaʻa o ka permeability a ʻoi aku ka maikaʻi o nā hiʻohiʻona DC, akā ma ke kumukūʻai kiʻekiʻe.Hoʻokaʻawale ʻia nā ʻāpana pauka pākahi mai kekahi i kekahi, e ʻae ana i nā cores e hoʻokaʻawale i nā ʻāpana ea no ka mālama ʻana i ka ikehu i loko o kahi inductor.

ʻO kēia waiwai ea i puʻunaue ʻia e hōʻoia i ka mālama pono ʻana o ka ikehu ma o ke kumu.ʻOi aku ka maikaʻi o ke kūpaʻa wela o ke kumu.Hoʻopaʻa ʻia nā ferrites i ʻoki ʻia a i ʻoki ʻia i ka ikehu i loko o ka ea ea kūloko akā me ka nui o ka leaka kahe e hoʻopiʻi ai i ka nalo a me ke keakea.I kekahi mau hihia, hiki i kēia poho ma muli o ke āpau kūloko ke ʻoi aku ma mua o ka poho kumu ponoʻī.Ma muli o ke ʻano kūloko o ka ea i loko o ka ferrite core, ʻaʻole ia e hōʻike i ke kūpaʻa wela maikaʻi.

ʻO ke koho kumu maikaʻi loa ʻo ke koho ʻana i ka mea maikaʻi loa me ka liʻiliʻi liʻiliʻi ʻoiai e hālāwai ana i nā pahuhopu hoʻolālā āpau.Inā ʻo ke kumukūʻai ke kumu nui, ʻo ka pauka hao ke koho.Inā ʻo ke kūpaʻa wela ka manaʻo nui, ʻo MPP ke koho mua.Kūkākūkā pōkole ʻia nā ʻano o kēlā me kēia ʻano mea.
Hiki ke kūʻai ʻia nā ʻano ʻano pauda 3 āpau ma ka laina ma ka liʻiliʻi liʻiliʻi mai ka waihona (hoʻouna koke ʻia) ma kēia pūnaewele: www.cwsbytemark.com.Hiki ke loaʻa nā ʻikepili ʻenehana hou aʻe o kēia mau mea ma www.bytemark.com

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

Loaʻa i nā cores MPP ka poho haʻahaʻa holoʻokoʻa a me ke kūpaʻa wela maikaʻi loa.ʻO ka mea maʻamau, aia ka ʻokoʻa inductance ma lalo o 1% a hiki i ka 140 deg C. Loaʻa nā cores MPP i nā permeabilities mua (µi) o 26, 60, 125, 160, 173, 200, a me 550. Hāʻawi ka MPP i ka resistivity kiʻekiʻe, haʻahaʻa hysteresis a me ka eddy current nā poho, a me ke kūpaʻa inductance maikaʻi loa ma lalo o DC bias a me nā kūlana AC.Ma lalo o AC excitation, aia ka hoʻololi inductance ma lalo o 2% (paʻa loa) no nā µi=125 cores ma AC flux density o luna o 2000 gauss.ʻAʻole ia e hoʻopiha maʻalahi i ka DC magnetization kiʻekiʻe a i ʻole DC bias condition.The saturation flux density o MPP core ma kahi o 8000 gauss (800 mT)

Ke hoʻohālikelike ʻia me nā mea ʻē aʻe, ʻo nā cores MPP ke kumu kūʻai, akā ʻoi aku ka maikaʻi ma ke ʻano o ka poho kumu a me ka paʻa.No ka noi e pili ana i ke kūlana bias DC, e hoʻohana i kēia mau kuhikuhi.No ka emi ʻana o 20% i ka permeability mua ma lalo o ke kūlana bias DC: - No µi= 60 cores, max.DC bias < 50 oersted;µi=125, ka nui.DC bias < 30 oersted;µi=160, ka nui.DC bias <20 i kau ʻia.

Nā hiʻohiʻona kūʻokoʻa

1.Lowest kumu poho ma waena o nā mea pauda pauda.Haʻahaʻa hysteristic poho hopena i haʻahaʻa hōʻailona distortion a haʻahaʻa koena poho.
2.Best mahana paʻa.Ma lalo o 1%.
3. ʻO 8000 gauss (0.8 tesla) ka nui o ka saturation flux density
4.Inductance tolerance: + - 8%.(3% mai 500 Hz a 200 Khz)
5.Most hoʻohana maʻamau i ka aerospace, pūʻali koa, lāʻau lapaʻau a me ke kiʻekiʻe wela noi.
6. Loaʻa maʻalahi e like me ka hoʻohālikelike ʻana i ka flux kiʻekiʻe a me ka senddust.
Nā noi:
Nā kānana Q kiʻekiʻe, nā wili hoʻouka, nā kaapuni resonant, nā kānana RFI no nā alapine ma lalo o 300 kHz, nā mea hoʻololi, nā chokes, nā kānana ʻano ʻokoʻa, a me nā kānana hoʻopuka DC biased.

Nā Core Flux Kiʻekiʻe
Hui: Ni-Fe

Hoʻokumu ʻia nā core Flux kiʻekiʻe me 50% nickel i hoʻopaʻa ʻia a me 50% iron alloy powder.Ua like ka mea kumu me ka lamination hao nickel maʻamau i loko o nā cores ʻeha lipine.Loaʻa i nā core Flux kiʻekiʻe ka hiki ke mālama i ka ikehu, a ʻoi aku ka nui o ka saturation flux density.ʻO ko lākou mānoanoa saturation flux ma kahi o 15,000 gauss (1500 mT), e like me nā koina pauka hao.Hāʻawi ka High Flux cores i kahi poho haʻahaʻa haʻahaʻa ma mua o Sendust.Eia nō naʻe, ʻoi aku ka kiʻekiʻe o ka poho kumu o High Flux ma mua o nā cores MPP.Hoʻohana pinepine ʻia nā core Flux High i ka noi kahi i kiʻekiʻe ai ka DC bias current.Eia naʻe, ʻaʻole hiki ke loaʻa e like me MPP a i ʻole Sendust, a ua kaupalena ʻia i kāna mau koho permeability a i ʻole nā ​​koho nui.
Nā noi:

1) Ma ka Line Noise kānana kahi e kākoʻo ai ka inductor i nā voltage AC nui me ka ʻole o ka saturation.

2) Hoʻololi i nā mea hoʻoponopono hoʻoponopono e mālama i ka nui o ka DC bias o kēia manawa

3) ʻO nā Pulse Transformers a me Flyback Transformers ʻoiai ʻo kona koena flux density kokoke i ka zero gauss.Me ka saturation flux density o 15K gauss, hiki ke hoʻohana ʻia ka flux density (mai ka zero a hiki i ka 15K gauss) i kūpono no nā noi unipolar drive e like me ka pulse transformer a me nā transformers flyback.

Kool Mu® / SENDUST
Hui: Al-Si-Fe

Ua ʻike ʻia ʻo Sendust cores ʻo Kool Mu® mai Magnetics Inc., ua hoʻohana mua ʻia nā mea Sendust ma Iapana ma kahi i kapa ʻia ʻo Sendai, a ua kapa ʻia ʻo ia ka 'puehu' core, a no laila ka inoa Sendust.Ma keʻano laulā, he haʻahaʻa haʻahaʻa loa nā poho senddust ma mua o nā koina pauka hao, akā ʻoi aku ka nui o nā poho kumu ma mua o nā cores MPP.Ke hoʻohālikelike ʻia me ka pauka hao, hiki ke emi mai ka pohō o ka sendust core i ka 40% a i ka 50% o ka pauka hao hao.Hōʻike pū ʻo Sendust cores i ka coefficient magnetostriction haʻahaʻa loa, a no laila kūpono ia no nā noi e koi ana i ka leo haʻahaʻa haʻahaʻa.He 10,000 gauss ka ha'aha'a o ka pauka hao o Sendust cores.Eia nō naʻe, hāʻawi ka senddust i ka mālama ʻana i ka ikehu kiʻekiʻe ma mua o ka MPP a i ʻole nā ​​​​ferrites gapped.

Loaʻa nā kiko Sendust i nā permeabilities mua (Ui) o 60 a me 125. Hāʻawi ʻo Sendust core i ka hoʻololi liʻiliʻi o ka permeability a i ʻole inductance (ma lalo o 3% no ka ui=125) ma lalo o ka hoʻoulu ʻana o AC.He maikaʻi loa ka paʻa wela ma ka hopena kiʻekiʻe.ʻOi aku ka liʻiliʻi o ka hoʻololi inductance ma mua o 3% mai ka ambient a hiki i 125 deg C. Eia naʻe, i ka emi ʻana o ka mahana i 65 deg C, ua emi kona inductance ma kahi o 15% no µi=125.E hoʻomaopopo pū i ka piʻi ʻana o ka wela, hōʻike ka senddust i ka emi ʻana o ka inductance me ka piʻi ʻana o ka inductance no nā mea pauda ʻē aʻe.He koho maikaʻi paha kēia no ka uku wela, ke hoʻohana ʻia me nā mea ʻē aʻe i loko o kahi hoʻolālā kumu.

ʻOi aku ke kumu kūʻai o Sendust cores ma mua o nā MPP a i ʻole nā ​​​​fluxes kiʻekiʻe, akā ʻoi aku ka nui o ke kumukūʻai ma mua o nā cores pauka hao.No ka noi e pili ana i nā kūlana bias DC, e hoʻohana i kēia mau alakaʻi.No ka emi ʻana ma lalo o 20% o ka permeability mua ma lalo o ke kūlana bias DC:

No µi= 60 cores, max.DC bias < 40 oersted;µi=125, ka nui.DC bias < 15 i kau ʻia.

Nā hiʻohiʻona kūʻokoʻa

1.Lower kumu poho ma mua o Iron Powder.
2.Low magnetostriction coefficient, haʻahaʻa leo leo.
3.Good wela kūpaʻa.Ma lalo o 4% mai -15 'C a hiki i 125' C
4. ʻOi aku ka nui o ka nui o ka flux: 10,000 gauss (1.0 tesla)
5.Inductance tolerance: ± 8%.
Nā noi:
1. Hoʻololi i nā mea hoʻoponopono a i ʻole nā ​​mana Inductors ma SMPS
2.Fly-back a me Pulse transformers (inductors)
3.In-Line leo kānana
4. Swing chokes
5.Phase control circuits (low audible leo) light dimmers, motor speed control device.
Pauda hao
Huina: Fe

ʻO ka pauda hao ke kumu kūʻai ʻoi aku ka maikaʻi ma mua o nā kiko pauda a pau.Hāʻawi ia i kahi koho hoʻolālā kūpono i ka MPP, High Flux a i ʻole Sendust cores.Hiki ke uku ʻia kona poho kumu kiʻekiʻe ma waena o nā mea pauka me ka hoʻohana ʻana i nā cores nui.I loko o nā noi he nui, kahi a me ka piʻi ʻana o ka mahana i loko o nā koina pauka hao he mea nui ʻole i ka hoʻohālikelike ʻana i ka mālama ʻana i nā kumukūʻai, hāʻawi nā ʻāpana pauka hao i ka hopena maikaʻi loa.Loaʻa nā ʻāpana ʻo Iron Powder i 2 mau papa: carbonyl iron a me hydrogen reduced iron.He haʻahaʻa haʻahaʻa ka hao carbonyl a hōʻike i ka Q kiʻekiʻe no nā noi RF.

Loaʻa nā cores Iron Powder i nā permeabilities mai 1 a 100. ʻO nā mea kaulana no nā noi SMPS ʻo #26 (µi=75), #8/90 (µi=35), #52 (µi= 75) a me #18 (µi= 55).He 10,000 a 15,000 gauss ka nui o ka pauka hao.Paʻa loa ka pauda hao me ka mahana.He 825 ppm / C ka mea #26 (hoʻololi inductance ma kahi o 9% me ka hoʻololi ʻana o ka mahana a hiki i ka l25 deg C). ʻO ka #52 mea he 650 PPM / C (7%).ʻO ka mea #18 he 385 PPM/C (4%), a ʻo ka mea #8/90 he 255 PPM/C (3%).

He mea maikaʻi loa ka pauka hao i nā noi alapine haʻahaʻa.No ka mea ʻoi aku ka kiʻekiʻe o kā lākou hysteresis a me ka eddy core pohō, pono e kaupalena ʻia ka mahana hana ma lalo o 125 deg C.

No ka noi e pili ana i nā kūlana bias DC, ʻōlelo ʻia nā alakaʻi aʻe.No ka emi ʻana ma lalo o 20% o ka permeability mua ma lalo o ke kūlana bias DC:

No ka Material #26, ka nui DC bias < 20 oersteds;
No ka Material #52, ka nui DC bias < 25 oersteds;
No ka Material #18, ka nui DC bias < 40 oersteds;
No ka Material #8/90, ka nui DC bias < 80 oersteds.

Nā hiʻohiʻona kūʻokoʻa

1.Lowest nā koina.
2.Maikaʻi no ka noi alapine haʻahaʻa (<10OKhz).
3.High kiʻekiʻe loa flux density: 15,000 gauss
4.Inductance tolerance ± 10%
Nā noi:
1.Energy mālama inductor
2.Low alapine DC pukana chokes
3.60 Hz ʻano ʻokoʻa EMI Line Chokes
4.Light Dimmers Chokes
5.Power Factor hoʻoponopono Chokes.
6.Resonant Inductors.
7.Pulse a me Fly-backTransformers
8.In-line leo kānana.Hiki ke kū i ka laina laina AC nui me ka saturation.
ʻO DC Biased Inductor Operation.
20% Palena Permeability

Ma lalo o nā kūlana magnetizing DC, hōʻike nā mea pauka a pau i ka emi ʻana o ka permeability e like me ka hōʻike ʻana ma nā pakuhi.Manaʻo ka ʻikepili ma luna i ka nui o ka AC flux density o 20 gauss.No ka noi e like me ka puka puka, kahi i hoʻokaʻawale ʻia nā inductors DC, pono e helu ʻia ka ikaika magnetization (H=0.4 * PHI * N * l / l), a hoʻonui ʻia ka helu o nā huli no ka emi ʻana o ka permeability.Inā ʻo ka ikaika magnetization (H) i helu ʻia i loko o ka palena kiʻekiʻe o ka DC biased, pono ka mea hoʻolālā e hoʻonui i nā huli ma kahi o 20%.

Papa Hoʻohālikelike Kumukuai Pili
ʻO nā kumukūʻai pili o kēlā me kēia mea e pili ana i ke kumu kūʻai o nā huahana a me nā kumukūʻai maka.Pono e hoʻohana ʻia kēia mau helu i alakaʻi wale nō.Ma keʻano laulā, ʻoi aku ka maikaʻi o ke kumukūʻai ʻo Micrometal's Iron Powder #26, a ʻo nā MPP nā mea waiwai loa.
Nui nā mea hana a me nā mea lawe mai i nā koina pauka hao, a ʻo ka hapa nui o lākou ʻaʻole hōʻike i ka pae maikaʻi e like me nā mea i hāʻawi ʻia e Micrometals.