Kulula kakhulu ukuthenga izitsha ezintsha / ezitshintshileyo ze-stereo kwaye uzilungele zonke iziphumo ezintle. Kodwa ngaba uye wacinga malunga nento eyenza yonke into ithengise? I-stereo amplifiers ingaba yinto ebalulekileyo ekusebenzeni komculo ophezulu.
Injongo ye-amplifier ukufumana isalathisi sombane omncinci kwaye ukwandise okanye uyikhulise. Kwimeko ye-pre-amplifier, isalathisi kufuneka sikhuliswe ngokwaneleyo ukuba samkeleke nge -amplifier yamandla . Kwimeko ye -amplifier yamandla , uphawu kufuneka lukhuliswe kakhulu, olwaneleyo ukunika amandla i-loudspeaker. Nangona i-amplifiers ibonakala ibhokisi 'emnyama' engacacileyo, imigaqo-siseko yokusebenza ilula. I-amplifier ifumana uphawu lokufaka kwimvelaphi (ifowuni yeselula, i-CD, i-CD / iDVD / imidiya yemidiya, njl.) Kwaye yenza i-replica eyongezelelweyo yesignali esincinane. Amandla adingekayo ukwenza oku aphuma kwi-receptacle ye-wall-110 volt. Amaplifiers anxibelelwano olusisiseko lwesithathu: igalelo esuka kumthombo, umphumo kwizivakalisi, kunye nomthombo wamandla ukusuka kwisango elingu-110-volt ngodonga.
Amandla avela kwi-110-volts athunyelwa kwicandelo le-amplifier - eyaziwa ngokuba ngumbane-apho kuguqulwa ukusuka kwikhompyutha ekhoyo ukuya kutsho ngqo . Ulawulo olukhoyo ngoku nje lufana namandla atholakala kwiibhetri; ii-electron (okanye umbane) zihamba kuphela kwicala elinye. Ukutshintsha okukhoyo kukho ukuhamba kwindlela zombini. Ukusuka kwibhetri okanye ukunikezelwa kwamandla, okwangoku oombane uthunyelwa kwi-resistance resistor - eyaziwa ngokuba ngumtshintshi. I-transistor isisigxina (cinga i-valve yamanzi) eyahlula inani elikhoyo elikhoyo ngokujikeleza kwisiphaluka esekelwe kumqondiso wokufaka umthombo.
Umqondiso osuka kwimvelaphi yenkxaso kubangela ukuba isithinteli sinciphise okanye sinciphise ukuxhatshazwa kwayo, ngaloo ndlela vumela ukuhamba kwexesha. Isixa samanje esivunyelwe ukuhamba si sekelwe kubukhulu bomqondiso ukusuka kumthombo wokufakelwa. Isibonakaliso esikhulu senza ukuba kubekho okwenzekayo okwenzekayo okwangoku, okubangele ukukhuliswa okukhulu komqondiso omncinci. Ixesha lembonakaliso lokufakelwa libuye lenze ukuba i-transistor isebenza ngokukhawuleza kangakanani. Ngokomzekelo, ithoni ye-Hz eyi-100 ukusuka kwimvelaphi yenkxaso ibangela ukuba umtshintshi avule kwaye avalwe ngamaxesha angama-100 ngesibini. I-1 Hz ithoni ukusuka kumthombo wokufakelwa kubangela ukuba umtshintshi avule kwaye avalwe ngamawaka angama-1000 ngesibini. Ngoko, umtshintshi ulawula izinga (okanye ubukhulu) kunye nokuphindaphinda kwamandla kagesi athunyelwe kwisithethi, nje ngevenge. Yileyo ndlela ifezekisa ngayo isenzo sokukhulisa.
Yongeza i-potentiometer - eyaziwa nangokuthi ulawulo lwevolumu - kwinkqubo kwaye une-amplifier. I-potentiometer ivumela umsebenzisi ukuba alawule inani langoku eliya kwiithethi, ezichaphazela ngokuthe ngqo umgangatho wezinga jikelele. Nangona kukho iintlobo ezahlukahlukeneyo kunye neendlela zokuqulunqa, bonke basebenza ngendlela efanayo.