Core Ferrite - kuyini? Indlela yokwenza indandatho ferrite ngezandla zakho?

Ngamunye wethu wabona amandla izintambo noma izintambo afanayo zobuchwepheshe amasilinda encane. Bona kungatholakala kakhulu ezivamile tangcondvomshini, kokubili ehhovisi futhi ekhaya, kube semikhawulweni izintambo ukuthi ukuxhuma iyunithi uhlelo ikhibhodi, igundane, ukwengamela, iphrinta, isithwebuli, nokunye. D. Lo msuka ibizwa ngokuthi "ferrite" (noma ferrite). Kulesi sihloko, sizofunda ukuqonda inhloso abakhiqizi computer nobuchwepheshe eliphezulu ifakwe imikhiqizo yayo ikhebula okukhulunywa izakhi.

Injongo eyinhloko

indandatho Ferrite uyakwazi ukunciphisa ithonya omsakazo nokugxambukela kagesi kwi isignali, esifafazwa wire. isignali Long namandla izintambo njengoba computer, nezinye izinto amandla abe izakhiwo yisinanakazana, okungukuthi, isenzo njenge-antenna. Bona kakhulu ngempumelelo akhipha ngaphandle imvelo imisindo ehlukahlukene ukuthi yilabo abake ngaphakathi idivayisi, ngaleyo ndlela kwakhele ukuphazamiseka eziteshini e umsakazo kanye nezinye zikagesi. Ngakolunye uhlangothi, uthatha isiphazamiso emoyeni ngesikhathi amagagasi omoya, ikhompyutha noma idivayisi electronic ngeke isebenze kahle. Lokho ukuqeda lesi simo futhi asebenzise indandatho ferrite ukugqoka phezu kwamandla noma i-adaptha ikhebula.

izakhiwo

Ferrite kuyinto ferromagnetic, non-Umqhubi, ukuthi, eqinisweni kuba yisivikelo kazibuthe. Lokhu kwaziswa akudali imisinga eddy ngakhoke kuyashesha kakhulu magnetization Ukubuyiselwa emuva - kuze imvamisa beat emasimini zangaphandle kagesi. Lokhu impahla okokusebenza isisekelo sokuthethelelwa ngesivikelo esiphumelelayo amadivaysi e-elekthronikhi. I ferrite indandatho bafake phezu ikhebula uyakwazi ukudala imodi evamile impedance ezinkulu zamanje asebenzayo.

Leli nto kusuka kwakwakhe amakhemikhali yensimbi oxides nezinye izinto ezimbiwa phansi. It has eyingqayizivele izici magnetic kanye conductivity ongaphakeme. Ngalesi ferrites babe cishe akukho izimbangi phakathi kwezinye izinto magnetic ephezulu imvamisa ubuchwepheshe. Ferrite 2000nm izindandatho kakhulu inductance ikhebula (emakhulwini amaningana noma izinkulungwane zezikhathi), esinikela imvamisa high umsindo ukucindezelwa. I element ogibele intambo ngesikhathi ukukhiqizwa yayo noma uthathe semicircles ezimbili, isifuthefuthe phezu wire ngokushesha ngemva ukukhiqizwa yayo. Ferrite igcwele ecaleni plastic. Uma sinqume, ungabona ingaphakathi ucezu metal.

Ingabe ferrite ezidingekayo? Noma ingabe esinye umkhonyovu?

Ezamakhompiyutha kakhulu "enomsindo" (ngokuya kagesi) amadivaysi. Ngakho, i-motherboard ngaphakathi chassis uyakwazi oscillate at a imvamisa elilodwa kilohertz. Ikhibhodi has a microchip, nakho usebenza imvamisa high. Konke lokhu kuholela kulokho okubizwa ngokuthi umsindo umsakazo isizukulwane eduze uhlelo. Ezimweni eziningi, basuke iqedwe yibhodi Ukuhlolwa kusukela kagesi Amasimu metal izindlu. Nokho, omunye umthombo umsindo - kungcono izintambo zethusi ukuxhuma amadivayisi ahlukahlukene. Eqinisweni, benza izimpondo inqobo ukuthi sithathe amasignali kusuka kwamanye ikhebula nomsakazo nomabonakude ubuchwepheshe kanye nomthelela umsebenzi ithuluzi "lakhe." isihlungi Ferrite kususa umsindo kagesi kanye ukusakaza. La mangqamuzana ukuguqula kagesi ephezulu imvamisa kunyakaza ku ukushisa amandla. Yingakho efakiwe enisemikhawulweni iningi amakhebuli.

Indlela ukukhetha ferrite

Ukuze ufake ikhebula phezu ring ferrite ngezandla zakho, kungase kudingeke uqonde izinhlobo mikhiqizo. Phela, uhlobo wire ukushuba kwawo kuxhomeke kulokho onjani lemifanekiso (kulokho impahla) udinga ukusebenzisa. Ngokwesibonelo, iringi ogibele ikhebula multi-core (intambo yamandla, idatha, ividiyo noma USB-interface), kudala okuthiwa isigaba transformer lapho edlulisa amasignali anti-isigaba kule ndawo, ebizwa imininingwane ewusizo, kodwa futhi ibonisa umsindo imodi evamile. Kulokhu, kufanele usebenzise ferrite non-eheha ingqondo ukuze ugweme ukuphulwa yokudlulisela ulwazi, kanye ferromaterial okusezingeni eliphezulu. Kodwa izindandatho ferrite ku ikhebula antenna is okungcono esikhethwe impahla ukuthi kuyophela umsindo ephezulu imvamisa, kunokuba kubonise kubo emuva wire. Njengoba ubona, umkhiqizo engalungile kungaba zilulaza ukusebenza kudivayisi yakho.

amasilinda ferrite

ukubhekana kakhulu ngempumelelo nge ukuphazamiseka obukhulu ferrite amasilinda. Nokho, khumbula ukuthi izihlungi besiyoba sikhulu futhi kukhona esingesihle kakhulu ukuyisebenzisa, futhi imiphumela yomsebenzi wabo neze umkhuba kuyoba sihluke kakhulu kancane amancane ngosayizi. Njalo sebenzisa izihlungi Ubukhulu elikhulu: ubukhulu kwangaphakathi kufanele kuhle kuhambisane umqhubi, yona ububanzi bayo ngeke athobele ububanzi isixhumi ikhebula.

Ungakhohlwa ukuthi ngosizo umsindo ukulwa ferrites hhayi kuphela. Ngokwesibonelo, kutuswa ukuba usebenzise ikhebula nge engxenyeni enkulu esiphambanweni conductivity kangcono. Ukukhetha ubude intambo, ungamenzi supply enkulu obuphelele phakathi amadivayisi axhunyiwe. Ngaphezu kwalokho, umthombo ukuphazamiseka ongakhonza izinga ezimbi uxhumano ngocingo kanye Isixhumi.

Ukumaka ferrite izindandatho

Uhlobo obanzi kunayo zokuqopha wokugubha ferrite izindandatho simiswe ngalendlela lelandzelako: K D × d × H, lapho:

- K - kuyinto segama elithi "indandatho";

- D - ubukhulu ngaphandle komkhiqizo;

- d - ubukhulu engaphakathi indandatho ferrite;

- H - ukuphakama zokuhlunga.

Ngaphandle izilinganiso umkhiqizo, kophawu kuyinto uhlobo ebethelwe yezinto ezibonakalayo. ferromagnetic. Isibonelo okufakiwe kungase kudingeke ifomu elilandelayo: K-1 M20VN 4h2,5h1,6. Enye ingxenye sifana Ubukhulu isiyonke icici ebethelwe kokuqala lokuqala permeability kazibuthe (20 μ _i). Ngaphezu kwalezi nemingcele, incazelo ngemuva, nomkhiqizi ngamunye kubonisa imvamisa ezibucayi, nemingcele loop hysteresis, resistivity futhi Curie lokushisa umkhiqizo othize.

Njengoba namanje zisebenzisa ubuhlalu ferrite

Ngaphandle ukusetshenziswa owaziwa njengendlela okusezingeni eliphezulu Ukuvikelwa imvamisa, izinto ferromagnetic asetshenziselwa yokukhiqiza transformers. Abakwazi ngokuvamile kubonakala block kwamandla ikhompyutha supply imishini. Kuyaziwa ukuthi transformer ku indandatho ferrite siyasebenza kakhulu e labathaki bamafutha olinganiselayo. Nokho, akubona bonke uyazi ukuthi kukhona ithuba "elula" okulinganisa. Lokhu ukuguqulwa transformer ongenza ukusebenza kulinganisa ngokunembe kakhudlwana. Ngaphezu kwalokho, Transformers kabanzi ferrite izindandatho zokufanisa okukhipha nokokufaka impedances izigaba amadivayisi Transistor. Kulo msebenzi aguqulayo futhi reactance. Ngenxa kudivayisi zokugcina kungenzeka ukuthi afake isicelo ushintsho uhla capacitance Tuning. "Eqine" Transformers isebenze kahle amaza ngezansi 10 MHz.

isiphetho

Labo abafuna ukuthi ukulimaza ferrite wedwa, kufanele kuphawulwe ukuthi impedance chungechunge, eyethula ephezulu imvamisa ferrite core, ungakwazi ukwandisa kalula uma uyakulwela ematfuba ambalwa umqhubi. Njengoba aphakanyisiwe theory kagesi, i impedance isimiso esinjalo kuzokhulisa ne skwele inani ematfuba. Kodwa kungenjongo theory kodwa umkhuba, isithombe kuyiwa ngenxa nonlinearity zezinto ferromagnetic nekulahlekelwa kuzo.

Ipheya kuvula nengaphakathi kwandisa impedance kane, njengoba kufanele kube, kodwa kancane kancane. Ngenxa yalokho, ukuze kuhlaliswe ematfuba ngaphezulu ikhebula kungaba ukuhlunga ingakhetfwa ngamabomu emikhulu ring usayizi. Uma lokhu akwamukelekile, kanye ikhebula kufanele lube ubude obufanayo, kungcono ukusebenzisa ehlunga eziningana.