1.Isipikha: ukuze simelane nomthelela wokushaya ngamandla okuzumayo esignali yohlelo ngaphandle kokulimala noma ukuhlanekezela.Nali inani elingokomfanekiso okufanele ubhekisele kulo: amandla alinganiselwe esipikha esikhethiwe kufanele aphindwe kathathu kunawesibalo setiyetha.
I-2.Isikhulisi samandla: uma siqhathaniswa ne-transistor power amplifier, indawo yokugcina amandla edingekayo ihlukile.Lokhu kungenxa yokuthi ijika eligcwele kakhulu le-tube amplifier libushelelezi.Ukuze uthole ukuphakama kwesiginali yomculo egcwele kakhulu, isikhulisi seshubhu ngokusobala asikhiqizi isenzakalo segagasi esisikayo, kodwa senza isihloko esiphezulu sibe yindilinga.Yilokhu esivame ukukubiza ngokuthi iziqongo zokugunda eziguquguqukayo.Ngemuva kwesikhulisi samandla e-transistor endaweni yokulayisha ngokweqile, ukuhlanekezela okungaqondile kukhuphuka ngokushesha, okukhiqiza ukusika okukhulu kwegagasi kusiginali.Ayenzi isiqongo sibe yindilinga, kodwa siyihlanza ngobunono.Abanye abantu basebenzisa i-impedance ehlanganisiwe yokumelana, i-inductance kanye namandla ukuze balingise isipikha, futhi bahlole ikhono langempela lokuphuma kwezinhlobo ezimbalwa zezikhulisi zamandla ezishintshashintshayo zekhwalithi ephezulu.Imiphumela ibonisa ukuthi lapho umthwalo une-shift yesigaba, kukhona i-amplifier yamandla ebizwa ngokuthi i-100W, futhi amandla angempela okukhiphayo angama-5W kuphela lapho ukuhlanekezela kungu-1%!Ngakho-ke, ukukhethwa kwenani elibekiwe le-transistor power amplifier:
High fidelity amplifier: izikhathi ezingu-10
Isikhulisi samandla esisezingeni eliphezulu: izikhathi eziyisi-6
Isikhulisi samandla aphakathi nendawo: izikhathi ezi-3 izikhathi ezi-4
I-amplifier yamandla eshubhu ingaba yincane kakhulu kunesilinganiso esingenhla.
3.Ingakanani imajini okufanele ishiywe ezingeni eliphakathi lokucindezela komsindo kanye nezinga eliphezulu lomfutho womsindo wohlelo.Kufanele kuncike kokuqukethwe nendawo yokusebenza yohlelo lokusakaza.Le 10dB engasadingeki, yomculo wesimanje we-pop, i-bungee jumping kanye nomunye umculo, idinga ukushiya ukuphindaphindeka okungu-20~25dB, ukuze uhlelo lomsindo.Sebenza ngokuphepha nangokunganyakazi.
Uchungechunge lwe-CT yesikhulumi sesinema yasekhaya
Isikhathi sokuthumela: Apr-10-2023