Motho e mong le e mong oa tseba hore limatlase lia hlokahala lisebelisoa tsa motlakase tse kang libui, libui le li-headphones, joale limatlase li phetha karolo efe ho lisebelisoa tsa motlakase?Ts'ebetso ea makenete e na le phello efe boleng ba tlhahiso ea molumo?Ke makenete efe e lokelang ho sebelisoa ho libui tsa litšobotsi tse fapaneng?
Tloo 'me u hlahlobe libui le limakete tsa libui le uena kajeno.
Karolo ea mantlha e ikarabellang bakeng sa ho etsa molumo sesebelisoa sa molumo ke sebui, se tsejoang ka hore ke sebui.Ebang ke stereo kapa li-headphones, karolo ena ea bohlokoa ke ea bohlokoa haholo.Sebui ke mofuta oa sesebelisoa sa transducing se fetolang mats'oao a motlakase hore e be mats'oao a acoustic.Ts'ebetso ea sebui e na le tšusumetso e kholo boleng ba molumo.Haeba u batla ho utloisisa magnetism ea sebui, u tlameha ho qala ka molao-motheo o utloahalang oa sebui.
Sebui ka kakaretso se entsoe ka likarolo tse 'maloa tsa bohlokoa tse kang T iron, makenete, khoele ea lentsoe le diaphragm.Kaofela rea tseba hore matla a khoheli a tla hlahisoa ka terata e tsamaisang, 'me matla a hona joale a ama matla a matla a khoheli (tataiso ea matla a khoheli e latela molao oa letsoho le letona).Ho hlahisoa matla a khoheli a tšoanang.Matla ana a khoheli a sebelisana le matla a khoheli a hlahisoang ke makenete sebui.Matla ana a etsa hore khoele ea lentsoe e thothomele ka matla a molumo oa matla a khoheli a sebui.Diaphragm ea sebui le khoele ea lentsoe li hokahane hammoho.Ha sebui se thothomela hammoho le diaphragm tsa sebui ho sutumelletsa moea o potolohileng hore o thothomele, sebui se ntša molumo.
Tabeng ea molumo o tšoanang oa makenete le khoele ea lentsoe e tšoanang, ts'ebetso ea makenete e na le tšusumetso e tobileng boleng ba molumo oa sebui.
-Ha matla a khoheli a matla a khoheli (magnetic induction) B a makenete, ke moo matla a matla a sebetsang holim'a lera la molumo.
-The matla a khoheli a matla a khoheli (magnetic induction) B, matla a maholo, 'me a phahamisa boemo ba khatello ea molumo oa SPL (sensitivity).
Boikutlo ba li-headphone bo bolela boemo ba khatello ea molumo oo mohala oa tsebe o ka o ntšang ha o supa leqhubu la sine la 1mw le 1khz.Setsi sa khatello ea molumo ke dB (decibel), khatello e kholo ea molumo, molumo o moholo, kahoo ha maikutlo a phahame, a theola ho thibela, ho bonolo hore li-headphone li hlahise molumo.
-The matla a khoheli a matla a khoheli (matla a makenete) B, boleng bo tlase ba Q ba kakaretso ea boleng ba sebui.
Q boleng (qualityfactor) e bua ka sehlopha sa li-parameter tsa "speaker damping coefficient", moo Qms e leng damping ea mochine oa mochine, e leng se bontšang ho monya le ho sebelisoa ha matla ho sisinyeha ha likarolo tsa sebui.Qes ke damping ea tsamaiso ea matla, e leng haholo-holo a bonahatsa ka tshebediso ya matla a lentsoe coil DC ho hanyetsa;Qts ke damping kakaretso, 'me kamano pakeng tsa tse peli tse ka holimo ke Qts = Qms * Qes / (Qms + Qes).
-Ha matla a khoheli a matla a khoheli (magnetic induction) B, a betere ea nakoana.
Transient e ka utloisisoa e le "karabo e potlakileng" ho lets'oao, Qms e batla e phahame.Li-earphone tse nang le karabelo e ntle ea nakoana li lokela ho arabela hang ha lets'oao le fihla, 'me lets'oao le tla ema hang ha le emisa.Mohlala, phetoho ho tloha ho loto ho ea ho ense e bonahala haholo meropa le lisymphonies tsa liketsahalo tse kholoanyane.
Ho na le mefuta e meraro ea makenete ea libui 'marakeng: aluminium nickel cobalt, ferrite le neodymium iron boron, Limanete tse sebelisoang ho electroacoustics haholo-holo ke limanete tsa neodymium le ferrite.Li teng ka boholo bo fapaneng ba mehele kapa libopeho tsa disc.Hangata NdFeB e sebelisoa lihlahisoa tse phahameng.Molumo o hlahisoang ke limatlase tsa neodymium o na le boleng bo holimo ba molumo, molumo o motle oa elasticity, ts'ebetso e ntle ea molumo, le boemo bo nepahetseng ba lebala la molumo.Ho itšetlehile ka ts'ebetso e babatsehang ea Honsen Magnetics, boron e nyenyane le e bobebe ea neodymium e ile ea qala ho nkela li-ferrite tse kholo le tse boima butle-butle.
Alnico e ne e le makenete oa khale ka ho fetisisa o sebelisoang libuing, joalo ka sebui ka bo-1950 le bo-1960 (se tsejoang ka hore ke li-tweeters).Ka kakaretso e entsoe ka sebui sa ka hare sa makenete (mofuta oa makenete oa kantle o fumaneha hape).Bothata ke hore matla a manyane, lebelo la maqhubu le moqotetsane, le thata ebile le brittle, 'me ho sebetsa ha ho bonolo haholo.Ho feta moo, cobalt ke sesebelisoa se haellang, 'me theko ea aluminium nickel cobalt e batla e phahame.Ho latela pono ea ts'ebetso ea litšenyehelo, ts'ebeliso ea aluminium nickel cobalt bakeng sa limakete tsa sebui e nyane haholo.
Hangata li-ferrite li etsoa libui tsa makenete tse kantle.Tšebetso ea matla a khoheli ea ferrite e batla e le tlase, 'me molumo o itseng oa hlokahala ho kopana le matla a khannang a sebui.Ka hona, hangata e sebelisoa bakeng sa libui tsa molumo tse nang le molumo o moholo.Molemo oa ferrite ke hore o theko e tlaase ebile o na le chelete e ngata;bothata ke hore molumo o moholo, matla a manyenyane, 'me lebelo la maqhubu le moqotetsane.
Thepa ea makenete ea NdFeB e phahame haholo ho feta AlNiCo le ferrite mme hajoale ke limakete tse sebelisoang haholo ho libui, haholo libui tsa maemo a holimo.Molemo ke hore tlas'a mocheso o tšoanang oa makenete, molumo oa oona o monyenyane, matla a maholo, 'me lebelo la maqhubu le pharaletseng.Hajoale, li-headphones tsa HiFi ha e le hantle li sebelisa limakenete tse joalo.Bothata ke hore ka lebaka la lintho tse sa tloaelehang tsa lefatše, theko ea thepa e phahame.
Pele ho tsohle, hoa hlokahala ho hlakisa mocheso o teng moo sebui se sebetsang teng, le ho tseba hore na ke makenete efe e lokelang ho khethoa ho latela mocheso.Limakete tse fapaneng li na le litšobotsi tse fapaneng tsa ho hanyetsa mocheso, 'me mocheso o phahameng oa ho sebetsa oo ba ka o tšehetsang le ona o fapane.Ha mocheso oa tikoloho ea ho sebetsa oa makenete o feta mocheso o phahameng oa ho sebetsa, liketsahalo tse kang ho fokotsa ts'ebetso ea makenete le demagnetization li ka etsahala, tse tla ama ka kotloloho molumo oa sebui.
