Kwesimanjeamasistimu omsindo,Ama-amplifiers ngokungangabazeki angenye yezingxenye ezibaluleke kakhulu.Ayithinti kuphela ikhwalithi yomsindo, kodwa futhi inquma ukusebenza okuphelele nolwazi lomsebenzisi wesistimu.Lesi sihloko sizocubungula izici ezibalulekile zeizikhulisamandla amandlaukukusiza uqonde ukuthi kungani lezi zakhi zibaluleke kangaka.
1. Okukhipha amandla: Shayela inhliziyo yophondo
Omunye wemisebenzi eyinhloko ye-amplifier ukunikeza amandla anele ukushayela isipika.Amandla aphumayo anquma ukuthi isistimu yomsindo ingagcina umsindo ocacile futhi ongahlanekezelwe ngamavolumu ahlukahlukene.Amandla okukhipha isikhulisi samandla ngokuvamile avezwa ngama-watts (W).Ukukhetha i-amplifier yamandla efanele kudinga ukucatshangelwa amaphuzu alandelayo:
Amandla alinganiselwe esipika: Amandla esikhulisamandla kufanele afane namandla alinganiselwe esipika.Amandla amancane kakhulu angabangela ivolumu enganele kanye nokuhlanekezela, kuyilapho amandla amaningi angalimaza isipikha.
Usayizi wegumbi kanye nemvelo ye-acoustic: Emakamelweni amakhulu noma ezindaweni ezinomsindo ongemuhle, kudingeka izikhulisa-mandla eziphezulu ukuze kuqinisekiswe ukumbozwa komsindo okufanayo nokucacile.
Uhlobo lomculo nemikhuba yokulalela: Abasebenzisi abajabulela ukulalela umculo oshintshashintshayo ophezulu bangase badinge izikhulisa-mandla eziphezulu ukuze bagcine imininingwane namandla omculo ngamavolumu aphezulu.
2. Ukuhlanekezela: Umbulali ongabonakali wekhwalithi yomsindo
Ukuhlanekezela kungenye yezinkomba ezibalulekile zokuhlola ikhwalithi yezikhulisamandla zamandla.Isho noma yiziphi izinguquko ezingadingekile kusiginali yokufaka phakathi nenqubo yokukhulisa.Kukhona ikakhulukazi izinhlobo ezilandelayo zokuhlanekezela:
Ukuhlanekezela kwe-Harmonic: Imvamisa yokuphindaphinda ekhiqizwa ngesikhathi sokukhulisa isignali.Lokhu kuhlanekezela kungenza umsindo ungabi ngokwemvelo futhi kuthinte ikhwalithi yomsindo.
Ukuhlanekezelwa kwe-Inter-modulation: ifrikhwensi entsha ekhiqizwa lapho amasignali amafrikhwensi ahlukene exutshwa kusikhulisa-zwi, esingaholela kumathoni angafuneki kusiginali yomsindo.
Ukuhlanekezelwa kwe-Trans-conductance: Ubudlelwano obungewona umugqa phakathi kokuphumayo kwesikhulisi samandla nesiginali yokufaka, ngokuvamile okwenzeka phakathi nokulayisha ngokweqile.
Idizayini ye-amplifier enhle kakhulu izonciphisa lokhu kuhlanekezela futhi inikeze ikhwalithi yomsindo ecacile nengokwemvelo.
3. Impendulo yefrikhwensi: Ukubuyisela ububanzi nokujula komsindo
Impendulo yefrikhwensi ibhekisela kububanzi befrikhwensi isikhulisi samandla esingasikhulisa ngempumelelo, ngokuvamile esikalwa nge-Hertz (Hz).I-amplifier efanelekile kufanele inikeze ukukhulisa okubushelelezi nokufanayo kuwo wonke ama-spectrum omsindo (imvamisa ukusuka ku-20Hz ukuya ku-20kHz).Ibhalansi yempendulo yemvamisa ithinta ngqo umphumela wokubuyisela womsindo:
Impendulo yefrikhwensi ephansi: ithinta ukujula nomthelela we-bass.Ama-amplifiers anempendulo enhle ye-low-frequency anganikeza imiphumela eqinile ye-bass.
Ukusabela kwefrikhwensi emaphakathi: kuthinta kakhulu ukusebenza kwamazwi nezinsimbi, futhi kuyingxenye eyinhloko yekhwalithi yomsindo.
Ukusabela kwefrikhwensi ephezulu: Kuthinta ukucaca nokusebenza kwemininingwane yamanothi aphezulu, futhi isikhulisi samandla esinokusabela okuhle kwefrikhwensi ephezulu singenza umsindo ucace kakhudlwana futhi ube ngokoqobo.
4. Isilinganiso sesignali kumsindo (SNR): isiqinisekiso sekhwalithi yomsindo omsulwa
I-Signal to Noise Ratio inkomba ekala isilinganiso phakathi kwesignali ewusizo nomsindo kusiginali yokuphumayo yesikhulisamandla samandla, ngokuvamile esivezwa ngama-decibel (dB).Isilinganiso esiphezulu sesignali-kuya-noise sisho ukuthi isikhulisamandla sikhiqiza umsindo omncane ongemuva uma sikhulisa isignali, siqinisekisa ukuhlanzeka kwekhwalithi yomsindo.Ukukhetha isikhulisi samandla esinesilinganiso esiphezulu sesignali-kuya-kumsindo kunganciphisa ukuphazamiseka kokuzwa futhi kunikeze umuzwa wokulalela ogxile kakhulu.
5. Idizayini yesiyingi yezikhulisamandla zamandla: isisekelo sokunqunywa kokusebenza
Idizayini yesekethe yangaphakathi yesikhulisamandla sithinta ngqo ukusebenza kwayo nekhwalithi yomsindo.Kunemiklamo eminingi evamile yesekethe:
I-amplifier Yekilasi A: Ngekhwalithi yomsindo ehamba phambili kodwa esebenza kahle kakhulu, ifanele amasistimu omsindo aphezulu aphishekela ikhwalithi yomsindo yokugcina.
Isikhulisi se-Class B: Ukusebenza okuphezulu kodwa ukuhlanekezela okuphawulekayo, okuvame ukusetshenziswa phakathi nezinhlelo zomsindo ezisezingeni eliphansi.
I-amplifier Yekilasi AB: Ihlanganisa izinzuzo zakho kokubili Ikilasi A kanye Nekilasi B, ngokusebenza kahle okuphezulu nekhwalithi yomsindo enhle, futhi okwamanje iwumklamo ovamile we-amplifier.
Isikhulisi se-Class D: Ngokusebenza kahle kakhulu nosayizi omncane, silungele amadivayisi aphathekayo namasistimu etiyetha yasekhaya yesimanje.
Yonke imiklamo yesekethe inezinzuzo nezinkinga zayo, futhi ukukhetha uhlobo lweamplifier olufanele izidingo zakho kubalulekile.
6. Imisebenzi kanye nokuxhumana kwezikhulisi zamandla: ukuhlangabezana nezidingo ezihlukahlukene
Ama-amplifiers anamuhla awadingi nje kuphela ikhwalithi yomsindo enhle kakhulu, kodwa futhi adinga ukuhlinzeka ngemisebenzi ecebile nezindawo zokusebenzelana ukuze azivumelanise nezimo ezihlukahlukene zokusetshenziswa.Ngokwesibonelo:
Izixhumanisi zokufaka eziningi, njenge-RCA, i-fiber optic, i-coaxial, i-HDMI, njll., yenza kube lula ukuxhumeka kwemithombo yomsindo ehlukahlukene.
Ukuxhumeka okungenantambo: njenge-Bluetooth ne-Wi-Fi, elungele ukuhlanganiswa namadivayisi eselula kanyeizinhlelo zasekhaya ezihlakaniphile.
Ukusekelwa kweziteshi eziningi: kufanelekileizinhlelo zeshashalazi zasekhaya, ihlinzeka ngomuzwa womsindo ogxile kakhulu.
Ukukhetha i-amplifier enhle kakhulu kudinga ukucatshangelwa okuphelele kwezinto ezifana nokuphuma kwamandla, ukuhlanekezela, impendulo yemvamisa, isilinganiso sesignali-kuya-nomsindo, idizayini yesekethe, ukusebenza, nezixhumi ezibonakalayo.Kungale ndlela kuphela lapho singaqinisekisa ukusebenza okuhle kakhulu nolwazi lomsebenzisi lwesistimu yomsindo.Kungakhathaliseki ukuthi ungumthandi womculo noma umthandi wetiyetha yasekhaya, ukuqonda nokunaka lezi zakhi ezibalulekile kuzokusiza ukhethe idivayisi ye-amplifier ekufanele kangcono, okwenza konke okuhlangenwe nakho kokulalela kube mnandi.
Isikhathi sokuthumela: Jun-06-2024