Momwe mungasankhire bwino amplifier kwa zokuzira mawu?

Amplifier ndi chimodzi mwazinthu zofunika kwambiri pamawu. Ili ndi magawo ambiri omwe tiyenera kutsatira posankha njira yoyenera. Komabe, kusankha kwachitsanzo chapadera sikudziwika, komwe kumalepheretsanso msika waukulu wa zida zomvera. Kodi ndi bwino kulabadira chiyani? Za izo pansipa.

Pali chinthu chimodzi chimene ndiyenera kutchula poyamba. Choyamba, timagula zokuzira mawu ndiyeno timasankha zokulitsa zoyenerera, osati mwanjira ina. Magawo a chowulira mawu omwe amplifier angagwire nawo ntchito ndizofunikira kwambiri.

Amplifier ndi amplifier mphamvu

Lingaliro la amplifier nthawi zambiri limalumikizidwa ndi zida zomvera kunyumba. Pa siteji, chipangizo choterocho chimatchedwa powermixer, dzina limachokera ku kuphatikiza kwa zinthu zonse ziwiri.

Ndiye kodi wina amasiyana bwanji ndi mnzake? Amplifier kunyumba imakhala ndi amplifier ya mphamvu ndi preamplifier. Mphamvu ya amplifier - chinthu chomwe chimakulitsa chizindikiro, preamplifier ikhoza kufananizidwa ndi chosakaniza.

Paukadaulo waukadaulo, nthawi zina timagwiritsa ntchito chipangizo chamtunduwu chifukwa sichingatheke, ndipo popeza timakonda chosakanizira chomwe tatchula pamwambapa ngati chowongolera kuti chikhale ndi chilichonse, timakakamizika kugula chinthu chokulitsa chifukwa chizindikirocho chiyenera kukhala. kukulitsidwa mwanjira ina.

Chipangizo choterocho, mosiyana ndi amplifier, nthawi zambiri chimakhala ndi cholowetsa chizindikiro, chosinthira mphamvu ndi zotulutsa zokuzira mawu, sichikhala ndi preamplifier. Titha kuzindikira ngakhale chida chopatsidwa ndi kamangidwe kake, popeza pali kusiyana koonekeratu mu kuchuluka kwa zinthu zomwe zimagwiritsidwa ntchito kusintha magawo osiyanasiyana.

Momwe mungasankhire amplifier mphamvu?

Ndatchula pamwambapa kuti si ntchito yophweka. Tiyenera kutsogoleredwa kumlingo waukulu ndi magawo a cholankhulira chomwe "mapeto" operekedwa a mphamvu adzagwira ntchito. Timasankha zida kuti mphamvu yotulutsa amplifier (RMS) ikhale yofanana ndi mphamvu ya zokuzira mawu kapena yokwera pang'ono, osatsika.

Zoona zake n’zakuti n’kosavuta kuwononga chowulira mawu chokhala ndi chokulitsa mphamvu chofooka kusiyana ndi champhamvu kwambiri. Izi zili choncho chifukwa posewera ndi mphamvu zonse za zipangizo zathu, tikhoza kusokoneza phokoso, chifukwa chokweza mawu sichidzatha kutulutsanso phokoso lachidutswa chopatsidwa chifukwa cha mphamvu yosakwanira yoperekedwa ndi chinthu chokulitsa. Chokuzira mawu chimafuna "zochulukira" ndipo chokulitsa mphamvu chathu sichingathe kupereka. Chinthu chinanso chomwe chimasokoneza kusowa kwa ma watts ndi kuchuluka kwa matalikidwe a diaphragm.

Komanso tcherani khutu ku zovuta zochepa zomwe chipangizochi chingagwire ntchito. Nanga bwanji mutagula chokulitsa mphamvu chomwe chimagwira ntchito pang'onopang'ono 8 ohms ndikugula zokuzira mawu 4 ohms? Choyikacho sichingakhale chogwirizana ndi wina ndi mzake, chifukwa amplifier sangagwire ntchito motsatira ndondomeko ya wopanga ndipo idzawonongeka mwamsanga.

Choncho, choyamba zokuzira mawu, ndiye, malinga ndi magawo awo, chokulitsa mphamvu ndi mphamvu yoyenera ndi osachepera linanena bungwe impedance kuti athe kugwira ntchito ndi zolankhulira anagula.

Kodi mtunduwu uli ndi vuto? Inde kumene. Poyambira, ngati mulibe ndalama zambiri, ndikupangira kugula zinthu zapakhomo, kupanga kwathu. Ndizowona kuti maonekedwe ndi chiŵerengero cha mphamvu ndi kulemera sizolimbikitsa, koma ndi chisankho chabwino kwambiri.

Kumanga ndikofunikanso kwambiri. Chifukwa kuvala mosalekeza, zoyendera ndi ntchito mu zinthu zosiyanasiyana, siteji mphamvu amplifiers ayenera kukhala nyumba cholimba, opangidwa ndi osachepera awiri millimeter pepala zitsulo.

Onaninso chitetezo chomwe chili nacho. Choyamba, tiyenera kupeza "Tetezani" LED. Mu 90% ya ma amp amphamvu, kuyatsa LED iyi kumachotsa zokulirakulira, kotero khalani chete. Ichi ndi chitetezo chofunikira kwambiri chifukwa chimateteza zokuzira mawu kumagetsi a DC omwe ndi oopsa kwa zokuzira mawu. Nanga bwanji ngati amplifier ili ndi fuse ndipo gawoli ndi 4 kapena 8 ohms pakali pano, ma fuse amachitira pang'onopang'ono, nthawi zina amakwanira kachigawo kakang'ono ka sekondi imodzi ndipo timakhala ndi coil yowotchedwa mu chowulira chokweza, chifukwa chake ndikofunikira kwambiri. chitetezo.

Chotsatira pamzere ndi chizindikiro cha clip, "clip" LED. Kunena mwaukadaulo, imawonetsa kuchulukira, mwachitsanzo, kupitilira mphamvu yomwe idavotera. Imawonekera polankhula molumikizana ndi crackle. Mkhalidwewu ndi wowopsa kwa ma tweeters omwe sakonda ma siginecha osokonekera kwambiri ndipo amawonongeka mosavuta, osatchulanso zamtundu wamawu osokonekera.

Magawo amplifier omwe ayenera kuganiziridwa

Choyimira chofunikira ndi mphamvu ya amplifier - ndi mtengo wosinthidwa wowerengeka pamtengo wovomerezeka. Mphamvuyi iyenera kuwonetsedwa ngati mphamvu ya RMS, chifukwa ndi mphamvu yosalekeza yomwe amplifier yamagetsi imatha kutulutsa pakugwira ntchito yayitali. Sitiganizira za mitundu ina ya mphamvu, monga mphamvu ya nyimbo.

Kuyankha pafupipafupi ndi gawo lofunikira. Imatsimikizira kuchuluka kocheperako komanso kopitilira muyeso kwa siginecha pakutulutsa kwa amplifier. Moyenera kuperekedwa ndi kuchepa kwa chizindikiro matalikidwe. Mankhwala abwino ali ndi chizindikiro ichi pamlingo wafupipafupi wa 20 Hz -25 kHz. Kumbukirani kuti tili ndi chidwi ndi "mphamvu" bandwidth, ndiko kuti, pa katundu wofanana ndi katundu wowerengedwa, ndi matalikidwe osadziwika a chizindikiro chotuluka.

Zosokoneza - kwa ife, tili ndi chidwi ndi mtengo wosapitirira 0,1%.

Kugwiritsa ntchito mphamvu kuchokera pa intaneti ndikofunikiranso. Mwachitsanzo, pa 2 x 200W amplifier, kugwiritsa ntchito kotereku kuyenera kukhala osachepera 450W. Ngati wopanga akuyamika chipangizocho ndi mphamvu zambiri komanso mphamvu zochepa kuchokera pa intaneti, zikutanthauza kuti magawowa amasokonekera kwambiri ndipo kugula kwa chinthu choterocho kuyenera kusiyidwa nthawi yomweyo.

Ngati mwawerenga nkhani yonse mosamala, musaiwale za kulephera kwa amplifier. Kukwera kalasi ya amplifier mphamvu, ndi bwino kusinthidwa kuti ntchito ndi otsika impedance.

Kumbukirani, chinthu chabwino chiyenera kudziyesa chokha, chifukwa chiyani? Chabwino, chifukwa zinthu zolemera kwambiri pakupanga kwa amplifier ndizomwe zimatsimikizira magawo ake ofunikira. Izi ndi izi: thiransifoma (50-60% ya kulemera kwake), ma capacitors a electrolytic ndi masinki otentha. Panthawi imodzimodziyo, iwo ali (kupatula kutentha kwa kutentha) chimodzi mwa zigawo zamtengo wapatali.

Izi sizikugwira ntchito ku zokulitsa za "D" zochokera kumagetsi osinthika. Chifukwa cha kusowa kwa thiransifoma, malangizowa ndi opepuka kwambiri, komabe okwera mtengo kwambiri.

Kukambitsirana

Nkhani yomwe ili pamwambayi ili ndi zophweka zambiri ndipo zimapangidwira oyamba kumene, kotero ndinayesera kufotokoza mfundo zonse mophweka. Ndikukhulupirira kuti mutatha kuwerenga malemba onse mosamala simudzakhala ndi vuto posankha zipangizo zoyenera. Kumbukirani kugwiritsa ntchito nzeru pogula, monga chisankho chabwino chidzabweretsa zochitika zambiri zopambana ndipo palibe kulephera m'tsogolomu.

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