Maphunziro Owonetsera Magalimoto

Ma ABD a Magetsi Amagetsi

Magetsi onse amagwira ntchito zomwezo ndikugwira ntchito motsatira mfundo zomwezo, koma sizikutanthauza kuti magulu onse opanga magalimoto amamangidwa mofanana. Ma amps ena ali oyenerera kwa ntchito zina kuposa ena, ndipo njira yosavuta yodziŵira mtundu umene mukufunikira ndikuyang'ana kalasi. Gulu lirilonse limatchulidwa ndi kalata ya zilembozo ndipo limafotokozedwa momveka bwino, ngakhale pali kuphatikiza ndi hybridi zomwe zimaphatikizapo zizindikiro za kalasi imodzi.

Mutu wa Maphunziro

Pa mlingo woyambirira, pali mitundu iwiri yokha ya amplifiers amphamvu: ma analogo ndi kusintha ma amps. Mitundu yambiriyi ikuphatikizidwanso m'magulu oposa khumi ndi awiri. Zina mwa makalasiwa, monga T ndi Z, ali ndi malonda, zojambulajambula, ndi zina, monga A ndi B, zimapangidwa ndi ojambula osiyanasiyana.

Kuchokera m'zigawo zosiyana siyana zamagetsi, pali zinayi zomwe zimagwiritsidwa ntchito popanga mafilimu, ndipo imodzi mwa izo ndi mtundu wophatikizana. Maphunziro anayi amplifier ndi A, B, AB, ndi D.

Ophunzira A Magalimoto A M'kalasi

Mwakutanthauzira, gulu A amplifiers "nthawi zonse." Izi amps amasonkhanitsidwa palimodzi chifukwa amagwiritsa ntchito maulendo oyendetsa omwe cholinga kuti nthawi zonse akudutsa kupititsa transistors . Kukonzekera kwakukulu kumabwera ndi ubwino ndi zovuta zonse zomwe zimapangitsa gulu la A amps kukhala loyenerera kuzinthu zina komanso zosayenera kwa ena.

Nkhani yayikulu kwambiri pakubwera ku ma Aps amtundu wa ntchito za stereo ndi kukula.

Kalasi B Yophunzitsa Amoto

Mosiyana ndi a amps A, mapulogalamu amphamvu a m'kalasi B amasinthidwa. Izi zikutanthauza kuti amagwiritsa ntchito maulendo oyendetsa mkati omwe amawathandiza kuti "asinthe" zotsatira zawo zopanga zinthu ngati palibe chizindikiro cha audio kuti chikulitse. Izi zimapangitsa kuti zinthu zikhale bwino kwambiri, zomwe zimapangitsa gulu la B kuti likhale loyenerera popempha mafilimu, koma limabweranso ndi kuchepa kwachinsinsi.

Ophunzira a Galimoto Amapanga Mafilimu

Amps amenewa ndi osakanikirana a miyambo yachikhalidwe A ndi B. Ngakhale kuti ma transistors nthawi zonse amatha kupyolera mwa iwo, amagwiritsa ntchito makina ozungulira omwe amatha kuchepetsa kuchuluka kwa panopa pamene palibe chizindikiro. Izi zimapangitsa kuti azikhala bwino kwambiri kusiyana ndi ma apsu amtundu woyera omwe alibe kupotoka kwakukulu monga kalasi B amp. Chifukwa cha phindu limeneli, amphamvu kwambiri a Gulu la AB ndi omwe amagwiritsidwa ntchito kwambiri pamagetsi amtundu wa galimoto.

Ophunzira A G A D

Maphunzilo A A, B, ndi AB ndizo zitsanzo za makalasi a analog amplifier, zomwe zimapangitsa gulu lachiwiri kukhala "switched" amp class yomwe imagwiritsidwa ntchito popanga ma audio. Mosiyana ndi alasi A, B ndi AB, ma Dps apamwamba a D class amagwiritsira ntchito mwa kusintha ndi kuchoka pakali pano kupita ku zochitika zawo mofulumira kwambiri.

Izi zimapanga chizindikiro chosinthika, kapena pulsed, chiwonetsero chomwe chimapangidwira ku chizindikiro choyambirira cha analoji.

Ngakhale magalimoto am'kalasi D akugwira bwino kwambiri, njira yosintha / kuyendetsa imayambitsa kupotoza kwina pafupipafupi. Izi nthawi zambiri zimachotsedwa ndi fyuluta yotsika pansi chifukwa maulendo apansi samavutika ndi kupotoka komweko. Amapulogalamu ambiri a mono subwoofer ali m'kalasi D, koma kukula ndi mphamvu zimapangitsa iwo kukhala amodzi otchuka kwambiri pamakamba okhudzidwa omwe amalankhula .

Pambuyo pa A, B, ndi D

Makamera ambiri amtundu wa voliyumu ndi A / B kapena D, koma kusiyana kwa mitundu iwiriyi ikuluikulu imapezekanso.

Maphunziro ena opanga mafilimu amatha kusankha ndikusankha makhalidwe kuchokera ku mitundu yambiri ya amps poyesera kuwonjezera ntchito popanda kupereka nsembe mobwerezabwereza.

Momwemonso, omvera amphamvu a AB amaphatikizapo mapangidwe a A ndi B, maphunzilo a BD a gulu amapangidwa kuti apereke zosokoneza zochepa pafupipafupi kuposa ma Dps D apamwamba ndi momwe mukuyembekezera kuchokera m'kalasi B.

Kodi Ndondomeko Yotani Yopangira Mafilimu Amene Muyenera Kusankha?

Poyamba bD, GH ndi mitundu ina ya amplifiers, kusankha kalasi yoyenera kungaoneke kovuta kwambiri kuposa kale lonse. Ngati mukungofuna kuwamva bwino, osayimba kwambiri, lamulo loyamba lachikondi ndi lakuti A / B amplifiers ndi abwino kwambiri pazowonjezera zonse, pomwe amphamvu a m'kalasi D ali bwino kuyendetsa subwoofers. Mungathe kuzipanga zovuta kwambiri kuposa ngati mukufuna, koma kutsatira ndondomeko yoyenera kukupangitsani inu panjira yolondola.