Indlela yokusetyenziswa kweringi yemagnethi esebenzayo | PHILA

Yeyiphi indlela yokusebenzisa i-ring inductive magnetic ring ? Uthini umahluko phakathi kwezixhobo zeringi ye-inductor ezahlukeneyo? Masiyazi kunye.

I-Magnetic ring isetyenziswa ngokuqhelekileyo i-anti-interference component kwi-electronic circuits, enefuthe elihle loxinzelelo kwi-high-frequency effect, elilingana ne-low-pass filter. Iyakwazi ukusombulula ingxaki yokunyanzeliswa kwe-high-frequency interference yemigca yamandla, imigca yesignali kunye neziqhagamshelo, kwaye inoluhlu lweenzuzo, ezifana nokulula ukuyisebenzisa, ukulungeleka, ukusebenza, indawo encinci kunye nokunye. Ukusebenzisa i-ferrite anti-interference core ukucinezela ukuphazamiseka kwe-electromagnetic (EMI) yindlela yoqoqosho, elula nesebenzayo. Isetyenziswe ngokubanzi kwiikhompyuter nakwezinye izixhobo zombane zoluntu.

I-Ferrite luhlobo lwe-ferrite olulungiswa ngokusetyenziswa kwezinto eziphezulu ze-conductivity magnetic ukuze kufakwe enye okanye ngaphezulu kwe-magnesium, i-zinc, i-nickel kunye nezinye isinyithi kwi-2000 ℃. Kwibhendi ye-frequency ephantsi, i-anti-interference magnetic core ibonisa i-impedance ephantsi kakhulu kwaye ayichaphazeli ukuhanjiswa kweempawu ezincedo kumgca wedatha okanye umgca wesignali. Kwibhendi ye-frequency ephezulu, ukusuka kwi-10MHz, i-impedance iyanda, kodwa icandelo le-inductance lihlala lincinci kakhulu, kodwa icandelo elichasayo liyakhula ngokukhawuleza. xa kukho amandla amatyeli aphezulu adlula kwimathiriyeli yemagnethi, icandelo elichasayo liya kuwaguqulela la mandla kusetyenziso lwamandla ashushu. Ngale ndlela, i-low-pass filter yakhiwe, enokuthi ithintele kakhulu i-high-frequency signal signal, kodwa i-impedance kwi-low-frequency eluncedo isignali inokungahoywa kwaye ayichaphazeli ukusebenza okuqhelekileyo kwesekethe. .

Uyisebenzisa njani i-ring magnetic ye-anti-interference inductance:

1. Yibeke ngokuthe ngqo kunikezelo lwamandla okanye iqela lemigca yesignali. Ukuze ukwandise ukuphazamiseka kunye nokufunxa amandla, unokuyijikeleza kaninzi ngokuphindaphindiweyo.

2. Iringi yemagnethi echasene ne-jamming enekliphu yokukhwela ifanelekile ukuhlawulelwa ukucinezelwa kwe-anti-jamming.

3. Iyakwazi ukunyanzeliswa lula kwintambo yamandla kunye nomgca wesignali.

4. Ufakelo oluguquguqukayo nolusebenzisekayo kwakhona.

5. Uhlobo lwekhadi oluzimeleyo lulungisiwe, olungachaphazeli umfanekiso opheleleyo wesixhobo.

Umahluko phakathi kwezinto ezahlukeneyo ze-Inductance Magnetic Ring

Umbala wendandatho yamagnetic ngokuqhelekileyo umnyama wendalo, kwaye umphezulu wendandatho yamagnetic unamasuntswana amahle, kuba uninzi lwawo lusetyenziselwa ukuchasana nokuphazamiseka, ngoko ke alufane lupeyintwe eluhlaza. Ngokuqinisekileyo, inxalenye encinci yayo isetyenziselwa ukwenza i-inductors, kwaye ifafazwe eluhlaza ukuze ifezekiseke kakuhle kwaye igweme ukulimaza ucingo lwe-enamelled kangangoko kunokwenzeka. Umbala ngokwawo awunanto yakwenza nokusebenza. Abasebenzisi abaninzi bahlala bebuza, indlela yokwahlula phakathi kwezangqa ezinozibuthe ezikwi-frequency high-frequency and low-frequency magnetic rings? Ngokubanzi, iringi yemagnethi ephantsi-izandi luhlaza kwaye i-high-frequency magnetic ring yindalo.

Kulindeleke ngokubanzi ukuba ukufikeleleka μ I kunye nokumelana ρ ziphezulu, ngelixa ukunyanzeliswa kweHc kunye nelahleko yePc ziphantsi. Ngokutsho kokusetyenziswa okuhlukeneyo, kukho iimfuno ezahlukeneyo zokushisa kweCurie, ukuzinza kweqondo lokushisa, i-coefficient yokunciphisa i-permeability kunye ne-coefficient yelahleko ethile.

Iziphumo eziphambili zezi zilandelayo:

(1) I-Manganese-zinc ferrites yahlulwe yaba yi-ferrites ephezulu yokungena kunye ne-high-frequency low-power ferrites (ekwaziwa ngokuba yi-ferrites yamandla). Uphawu oluphambili lwe-permeability ephezulu ye-mn-Zn ferrite iphezulu kakhulu.

Ngokuqhelekileyo, izixhobo ezine-μ I ≥ 5000 zibizwa ngokuba yizinto eziphezulu zokungena, kwaye μ I ≥ 12000 iyafuneka ngokubanzi.

I-Mn-Zn i-high-frequency kunye ne-low-power ferrite, eyaziwa ngokuba yi-ferrite yamandla, isetyenziswe kwizinto eziphathekayo ze-ferrite zamandla. iimfuno zokusebenza zezi: ukufikeleleka okuphezulu (okufunwa ngokubanzi μ I ≥ 2000), ubushushu obuphezulu beCurie, ukuxinana okuphezulu okubonakalayo, ukunyuswa okuphezulu kokufakwa kwemagnethi kunye nelahleko yemagnethi engundoqo kwi-frequency ephantsi.

(2) Izixhobo ze-Ni-Zn ferrite, kuluhlu oluphantsi lokujikeleza ngaphantsi kwe-1MHz, ukusebenza kwe-NiZn ferrites akufani naleyo yenkqubo ye-MnZn, kodwa ngaphezu kwe-1MHz, ngenxa ye-porosity ephezulu kunye nokumelana okuphezulu, kungcono kakhulu Inkqubo ye-MnZn ukuba ibe yimathiriyeli ethambileyo yamagnetic kwizicelo eziphezulu zefrikhwensi. I-resistivity ρ iphezulu njenge-108 ω m kwaye ilahleko ephezulu ye-frequency incinci, ngoko ifanelekile ngokukodwa kwi-frequency ephezulu ye-1MHz kunye ne-300MHz, kwaye ubushushu beCurie bezinto ze-NiZn ziphezulu kune-MnZn,Bs kunye nokuya kuthi ga kwi-0.5T 10A/ m I-HC ingaba yincinci njenge-10A / m, ngoko ifanelekile kuzo zonke iintlobo ze-inductors, i-transformers, i-coil coil kunye ne-coil coil. I-Ni-Zn i-high-frequency ferrites ine-bandwidth ebanzi kunye nelahleko ephantsi yokudluliselwa, ngoko ke isetyenziswa rhoqo njenge-electromagnetic interference (EMI) kunye ne-radio frequency interference (RFI) cores yokudityaniswa kwe-high frequency electromagnetic interference (EMI) kunye nezixhobo zokubeka phezulu. Amandla amaza aphezulu kunye nokuchasana nokuphazamiseka. Iiferi zamandla eNi-Zn zinokusetyenziswa njengezixhobo ze-Broadband ze-RF ukuqonda usasazo lwamandla kunye noguqulo olubambekayo lweempawu zeRF kwibhendi ebanzi, ezinomda osezantsi wamaza osasazo eekhilohertz ezininzi kunye nomda wamaza osasazo aphezulu amawaka eemegahertz. Izinto ze-Ni-Zn ferrite ezisetyenziswe kwi-DC-DC converter zinokunyusa ukuphindaphinda kokunikezelwa kwamandla okutshintsha kunye nokunciphisa ngakumbi umthamo kunye nobunzima be-transformer ye-elektroniki.

Amakhonkco magnetic eziqhelekileyo-kukho ngokusisiseko iindidi ezimbini zamakhonkco magnetic kumgca woxhulumaniso jikelele, enye ye-nickel-zinc ferrite magnetic ring, enye yi-manganese-zinc ferrite magnetic ring, badlala iindima ezahlukeneyo.

I-Mn-Zn ferrites ineempawu zokungena okuphezulu kunye nokuxinana okuphezulu kwe-flux, kwaye ineempawu zelahleko ephantsi xa i-frequency ingaphantsi kwe-1MHz.

Oku ngasentla kukuqaliswa kwee-inductors ze-magnetic ring, ukuba ufuna ukwazi ngakumbi malunga ne-inductors, nceda ukhululeke ukudibana nathi.