Gcwalisa Umhlahlandlela Wamakilasi Okukhulisa Amandla

  • Izikhulisamandla zibalulekile ekukhuphuleni isignali kumadivayisi njengezipikha nezinsimbi zomculo.
  • Kukhona amakilasi ahlukene (A, B, AB, C, D), ngalinye linezinzuzo ezithile kanye nokubi kuye ngokuthi isicelo.

Amakilasi esikhulisi samandla

Ama-amplifiers angamadivayisi abalulekile emhlabeni wezogesi nomsindo. Banomthwalo wemfanelo wokukhulisa ubukhulu bezimpawu zikagesi, baziguqule zibe amasignali amandla aphezulu akwazi ukunika amandla izipikha, izisetshenziswa zomsindo noma izinsimbi zomculo. Ukwazi amakilasi abo ahlukene nezici kuyisihluthulelo sokukhetha imodeli efanele nokuqonda ukuthi basebenza kanjani.

Kusukela ekuqalisweni kokuqala ngamashubhu e-thermionic kuya kumasistimu esimanjemanje, izikhulisamandla zithuthuke kakhulu. Lesi sihloko sihlola ngokuphelele izinhlobo zazo, izigaba nezinhlelo zokusebenza, sinikeza umhlahlandlela onemininingwane wokuqonda ukusebenza kwazo.

Yini i-amplifier yamandla?

Un i-amplifier yamandla Kuyidivaysi ye-elekthronikhi injongo yayo eyinhloko iwukwandisa amandla esignali yokufaka, ukuze iqine ngokwanele ukushayela umthwalo, kungaba yisipika, injini noma enye idivayisi ye-elekthronikhi edinga amandla engeziwe.

Ngokungafani nama-voltage noma ama-amplifiers amanje, izikhulisamandla zenzelwe ukuphatha amasiginali amakhulu okukhiphayo. Phakathi kwezicelo zayo ezivame kakhulu yilezi:

  • Amasistimu omsindo: ukukhulisa umculo noma izimpawu zezwi.
  • Izisetshenziswa zokulinganisa: ekuhlolweni okudinga amandla amakhulu.
  • Ukudluliswa kwefrikhwensi yomsakazo: ezinhlelweni zokuxhumana.
  • Okokusebenza: kuma-laboratories nasezindaweni zezimboni.

Ukuhlukaniswa kwama-amplifiers ngokuya ngebhendi yefrikhwensi

Ngokuya ngebanga lemvamisa abaphatha ngalo, ama-amplifier angahlukaniswa abe:

  • Izikhulisi Zemvamisa Ephansi (LF): Aziwa nangokuthi ama-audio frequency amplifiers, asebenza ngaphakathi kwe-spectrum ezwakalayo, okungukuthi, ukusuka ku-20 Hz kuya ku-20 kHz.
  • Ama-Amplifaya eRadio Frequency (RF): yakhelwe amafrikhwensi aphezulu, njengalawo asetshenziswa emisakazweni nakumabonakude.

Amakilasi esikhulisi samandla

Izigaba ezifanele kakhulu zezikhulisamandla zisekelwe endleleni izigaba zokuphuma kwazo ezisebenza ngayo. Avame kakhulu Ikilasi A, B, AB, C kanye no-D. Lawa makilasi awahlukani nje ngomklamo wawo, kodwa futhi nangekhono lawo, ukuhlanekezela kanye nezicelo.

Izinhlobo zama-amplifiers amandla

Isigaba

Ama-amplifiers e-Class A aziwa ngabo izinga lomsindo elihle kakhulu, njengoba bekhulisa lonke uhlobo lwamaza okufakwayo phakathi nawo wonke umjikelezo wesiginali. Lokhu kulungiselelwa, nakuba kusebenza kahle ngokwemibandela yokwethembeka, kubhekene nokusebenza kahle okuphansi, njengoba ama-transistors asebenza njalo, ngisho nalapho kungabikho isignali.

Ventajas:

  • Ukuhlanekezela okuphansi kanye nomugqa ophezulu.
  • Ilungele izicelo zokuthembeka okuphezulu.

Izinkinga:

  • Ukusebenza kahle kwamandla okuphansi (ngaphansi kwama-50%).
  • Bakhiqiza ukushisa okuningi, okuvame ukudinga izinhlelo zokulahla.

Isigaba B

Kuma-amplifiers e-Class B, isignali yokufaka ihlukaniswe imijikelezo emibili yesigamu, ngayinye iqhutshwa i-transistor ehlukile. Lokhu kulungiselelwa kuthuthukisa ukusebenza kahle, kodwa kwethula inkinga eyaziwa ngokuthi ukuhlanekezela kwe-crossover, okuthinta kabi umsindo.

Ventajas:

  • Ukusebenza okuphezulu kakhulu kune-Class A (cishe ama-70%).

Izinkinga:

  • Ukuhlanekezela kwe-Crossover kubonakala kumasignali aphansi.

Ikilasi AB

I-Class AB ihlanganisa izinzuzo zamakilasi A no-B. Umthamo omncane ongashintshi uyagcinwa onciphisa ukuhlanekezela kwe-crossover, ukuzuza ibhalansi phakathi kwekhwalithi yomsindo nokusebenza kahle.

Ventajas:

  • Ukuhlanekezela okuphansi nokusebenza kahle okuthuthukisiwe.
  • Ukusetshenziswa okuvamile kumasistimu omsindo.

Izinkinga:

  • Zikhiqiza ukushisa okuthile, nakuba kungaphansi kwe-Class A.

Isigaba C

I-Class C iyasebenza, kodwa ikhiqiza izinga eliphezulu lokuhlanekezela, elikhawulela ukusetshenziswa kwalo izicelo ezithile njengokukhulisa ifrikhwensi yomsakazo.

Ventajas:

  • Ukusebenza kahle okuphezulu (kufika ku-80%).

Izinkinga:

  • Ayilungele umsindo ngenxa yokuhlanekezela okuphezulu.

Ikilasi D

Ama-amplifiers ekilasi D asebenza ngawo ukuguqulwa kwe-pulse, okubenza baphumelele kakhulu. Zilungele izinhlelo zokusebenza eziphathwayo lapho ukusetshenziswa kwamandla okuphansi kubalulekile.

Ventajas:

  • Ukusebenza okuphezulu kakhulu (kufika ku-90% noma ngaphezulu).
  • Ukushisa okuphansi okwenziwe.

Izinkinga:

  • Zidinga izihlungi ukuze unciphise umsindo oshintshayo.

Izicelo ezingokoqobo

Ukukhetha i-amplifier efanele kuzoncika kuhlelo lwakho lokusebenza oluthile nezici ezifunwayo. Amasistimu e-Hi-fi athambekele ekuncikeni kumamodeli we-Class A noma we-AB, kuyilapho kumafrikhwensi omsakazo noma izinhlelo zokusebenza eziphathwayo, izinketho ze-Class C no-D zinconywa kakhulu.

  • Ama-amplifiers ekilasi A alungele ukufuna ama-audiophiles.
  • Ukusebenza kahle kwe-Class D kubenza bafanelekele izipikha ezingenantambo.

Yiba ngowokuqala ukuphawula

Shiya umbono wakho

Ikheli lakho le ngeke ishicilelwe. Ezidingekayo ibhalwe nge *

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  1. Ubhekele imininingwane: Miguel Ángel Gatón
  2. Inhloso yedatha: Lawula Ugaxekile, ukuphathwa kwamazwana.
  3. Ukusemthethweni: Imvume yakho
  4. Ukuxhumana kwemininingwane: Imininingwane ngeke idluliselwe kubantu besithathu ngaphandle kwesibopho esisemthethweni.
  5. Isitoreji sedatha: Idatabase ebanjwe yi-Occentus Networks (EU)
  6. Amalungelo: Nganoma yisiphi isikhathi ungakhawulela, uthole futhi ususe imininingwane yakho.