Izimfanelo Zomkhiqizo

Amadokhumenti Nemidiya

Izigaba Zemvelo Nokuthekelisa

Izinsiza Ezengeziwe

I-amplifier iyidivayisi ekhulisa i-voltage noma amandla wesiginali yokufaka.Iqukethe ishubhu kagesi noma i-transistor, isiguquli samandla, nezinye izakhi zikagesi.Isetshenziselwa ukuxhumana, ukusakaza, i-radar, ithelevishini, ukulawula okuzenzakalelayo namanye amadivaysi.

Idivayisi ekhulisa ubude noma amandla esignali.Kuyingxenye ebalulekile yokucubungula isignali kuthuluzi elizenzakalelayo.Umsebenzi wokukhulisa i-amplifier wenziwa isignali yokufaka ukulawula amandla, futhi ukusetshenziswa kwamandla okudingekayo ekukhuliseni kunikezwa amandla.Kuma-amplifiers alayini, okukhiphayo ukuphindaphinda nokuthuthukisa isignali yokufaka.Kuma-amplifiers angaqondile, okukhiphayo kuwumsebenzi wesiginali yokufaka.Ngokwenani elibonakalayo le-amplifier yokucubungula isignali ihlukaniswe yaba i-amplifier yemishini, i-electromechanical amplifier, i-electronic amplifier, i-hydraulic amplifier kanye ne-pneumatic amplifier, phakathi kwayo esetshenziswa kakhulu i-electronic amplifier.Ngokusabalala kobuchwepheshe be-efflux (bheka isici se-efflux), ukusetshenziswa kwama-hydraulic noma ama-pneumatic amplifiers kuye kwanda kancane kancane.Ama-amplifiers e-elekthronikhi ahlukaniswe ama-vacuum tube amplifiers, ama-transistor amplifiers, ama-amplifiers aqinile kanye nama-amplifiers kazibuthe ngokuya ngamadivayisi asebenzayo asetshenziswayo, phakathi kwawo ama-transistor amplifiers asetshenziswa kakhulu.Ama-amplifiers e-Transistor avame ukusetshenziselwa ukukhulisa amandla kagesi kanye nokukhulisa amasiginali kwamanje kumathuluzi azenzakalelayo, ikakhulukazi ngendlela yokukhulisa isiphetho esisodwa kanye nokukhulisa i-push-pull.

Isimiso: I-amplifier yamandla emvamisa ephezulu isetshenziswa esigabeni sokugcina sesidlulisi.Umsebenzi wayo ukukhulisa amandla esiginali yegagasi eguquliwe imvamisa ephezulu ukuze ihlangabezane nezidingo zamandla okuthumela, bese iwakhanyisela esikhaleni ngothi ukuze kuqinisekiswe ukuthi umamukeli endaweni ethile angathola izinga lesignali elenelisayo, futhi akalitholi. phazamisa ukuxhumana kwamashaneli aseduze.

Isikhulisi samandla esivama kakhulu siyingxenye ebalulekile yedivayisi yokudlulisela kusistimu yokuxhumana.Ngokuvumelana nobubanzi bebhendi yayo yokuvama ukusebenza, ingahlukaniswa ibe isandiso samandla esine-high-frequency-band kanye ne-wide-band high-frequency power amplifier.I-Narrow-band high-frequency power amplifier ivamise ukuthatha isekethe yokukhetha imvamisa ngomsebenzi wokuhlunga imvamisa njengeluphu yokuphumayo, ngakho ibizwa nangokuthi isikhulisi samandla esilungisiwe noma isikhulisi samandla esizwakalayo.Isekhethi yokuphumayo ye-wideband high-frequency power amplifier iyisiguquli somugqa wokudlulisa noma enye isekethe ehambisana ne-wideband, ngakho-ke ibizwa nangokuthi i-amplifier yamandla engasetshenzisiwe.Isikhulisi samandla semvamisa ephezulu siwuhlobo lwedivayisi yokuguqula amandla, eguqula amandla e-DC ahlinzekwa ugesi abe okukhiphayo kwe-AC yemvamisa ephezulu.Kwaziwa ngesikhathi se-“Low frequency Electronic Circuit”.Ngokusho kwe-Angle conduction yamanje ehlukene, i-amplifier ingahlukaniswa ibe yi-A, B, C izinhlobo ezintathu zezifunda zokusebenza.I-engeli yokugeleza yamanje ye-Class A amplifier ingu-360o, elungele isignali encane kanye nokukhulisa amandla aphansi.I-Angle yokugeleza yamanje ye-Class B amplifier cishe i-180o;I-engeli ye-amplifier ye-Class C yamanje ingaphansi kuka-180o.Kokubili i-Class B kanye ne-Class C ilungele umsebenzi wamandla aphezulu.Amandla okukhiphayo nokusebenza kahle kwesimo somsebenzi Wekilasi C kuphezulu phakathi kwezimo ezintathu zokusebenza.Izikhulisamandla zefrikhwensi ephezulu zisebenza kakhulu esigabeni C. Kodwa-ke, ukuhlanekezelwa kwefomethi yamaza yamanje yezikhulisamandla Zekilasi C kukhulu kakhulu ukuthi kungasetshenziselwa ukukhulisa amandla emvamisa ephansi, futhi kungasetshenziselwa kuphela ukukhulisa amandla anomsindo ngeluphu eshuniwe njenge umthwalo.Ngenxa yamandla okuhlunga wesekethe eshuniwe, i-current circuit kanye ne-voltage kuseseduze kakhulu ne-waveform ye-sinusoidal futhi ukuhlanekezela kuncane kakhulu.