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Amplifier ndi chipangizo chomwe chimakulitsa voteji kapena mphamvu ya siginecha yolowera.Amakhala ndi chubu chamagetsi kapena transistor, chosinthira mphamvu, ndi zida zina zamagetsi.Amagwiritsidwa ntchito polankhulana, kuwulutsa, radar, televizioni, kuwongolera zokha ndi zida zina.

Chipangizo chomwe chimawonjezera matalikidwe kapena mphamvu ya chizindikiro.Ndi gawo lofunikira pakukonza ma sign mu chida chodzipangira.Ntchito yokulitsa ya amplifier imadziwika ndi chizindikiro cholowera kuti chiwongolere mphamvu, ndipo kugwiritsa ntchito mphamvu komwe kumafunikira pakukulitsa kumaperekedwa ndi mphamvu.Kwa amplifiers a mzere, zotulukazo ndikubwereza ndi kukulitsa chizindikiro cholowera.Kwa amplifiers osagwirizana, zotsatira zake ndi ntchito ya chizindikiro cholowera.Malinga ndi kuchuluka kwa ma sign processing amplifier amagawidwa kukhala makina amplifier, electromechanical amplifier, electronic amplifier, hydraulic amplifier ndi pneumatic amplifier, yomwe imagwiritsidwa ntchito kwambiri ndi amplifier yamagetsi.Ndi kufalikira kwa ukadaulo wa efflux (onani efflux element), kugwiritsa ntchito ma hydraulic kapena pneumatic amplifiers kwakula pang'onopang'ono.Ma amplifiers amagetsi amagawidwa kukhala vacuum chubu amplifiers, transistor amplifiers, solid amplifiers ndi maginito amplifiers malinga ndi zida zomwe zimagwiritsidwa ntchito, zomwe zimagwiritsidwa ntchito kwambiri ndi transistor amplifiers.Ma transistor amplifiers nthawi zambiri amagwiritsidwa ntchito pokulitsa voteji komanso kukulitsa ma siginecha pazida zodziwikiratu, makamaka m'njira yokulitsa malekezero amodzi ndi kukankha-kukokera.

Mfundo Yofunika Kwambiri: Amplifier yamagetsi apamwamba amagwiritsidwa ntchito mu gawo lomaliza la transmitter.Ntchito yake ndikukulitsa mphamvu ya mafunde amphamvu kwambiri omwe amasinthidwa pafupipafupi kuti akwaniritse zofunikira zotumizira mphamvu, kenako ndikuwunikira mumlengalenga kudzera mu mlongoti kuonetsetsa kuti wolandila m'dera linalake atha kulandira siginecha yokhutiritsa, ndipo satero. kusokoneza kulumikizana kwa mayendedwe oyandikana nawo.

High frequency mphamvu amplifier ndi gawo lofunikira pazida zopatsirana pamakina olumikizirana.Malinga ndi kukula kwa bandi yake yogwira ntchito, imatha kugawidwa kukhala yopapatiza mphamvu yama frequency amplifier ndi wide-band high-frequency power amplifier.Narrow-band high-frequency power amplifier nthawi zambiri imatenga chigawo chosankha pafupipafupi ndi ntchito ya kusefa pafupipafupi ngati loop yotulutsa, motero imatchedwanso tuned amplifier kapena resonant power amplifier.Dongosolo lotulutsa la wideband high-frequency power amplifier ndi transmission line transformer kapena wideband matching circuit, choncho amatchedwanso untuned power amplifier.Magetsi amagetsi apamwamba kwambiri ndi mtundu wa chipangizo chosinthira mphamvu, chomwe chimasintha mphamvu ya DC yomwe imaperekedwa ndi magetsi kuti ikhale yotulutsa ma frequency a AC.Amadziwika panthawi ya "Low frequency Electronic Circuit".Malinga ndi ma Angle osiyanasiyana apano, amplifier imatha kugawidwa mu A, B, C mitundu itatu yamayiko ogwira ntchito.Mayendedwe apano a Class A amplifier ndi 360o, omwe ndi oyenera chizindikiro chaching'ono komanso kukulitsa mphamvu zochepa.Mayendedwe apano a Angle of Class B amplifier ndi pafupifupi 180o;Kalasi C amplifier otaya panopa ngodya ndi zosakwana 180o.Onse a Gulu B ndi Gulu C ndi oyenera kugwira ntchito zamphamvu kwambiri.Mphamvu zotulutsa komanso magwiridwe antchito a Class C ndizokwera kwambiri pakati pamikhalidwe itatu yogwirira ntchito.Ma frequency amplifier amphamvu kwambiri amagwira ntchito mu kalasi C. Komabe, kupotoza kwa mawonekedwe aposachedwa a Class C amplifiers ndikokulirapo kuti agwiritsidwe ntchito pakukulitsa mphamvu yapang'onopang'ono, ndipo atha kugwiritsidwa ntchito pakukulitsa mphamvu ya resonant yokhala ndi loop yokhazikika ngati katundu.Chifukwa cha kuthekera kwa kusefa kwa dera lokonzedwa, mayendedwe apano ndi magetsi akadali pafupi kwambiri ndi mawonekedwe a sinusoidal waveform ndipo kupotoza kumakhala kochepa kwambiri.