D-class msindo - yintoni ukuthandwa kwakhe?

Audio udidi D-msindo - isixhobo nezinye uphawu isicelo isixhobo sokufaka, esebenzisa iziqalelo yesekethe igalelo kunye kwangaphambili umthamo namandla inqanaba kunye ukusasaza ngamandla iphantsi ukufiphala. Ukusetyenziswa yokukhulisa ezinjalo sele kuqalile ngo-1958, kodwa kwiminyaka yakutshanje udumo lwabo aye anda kakhulu. Yintoni entle kangaka msindo D-class? Kweli nqaku sizama ukuphendula lo mbuzo.

Kwiphakati eqhelekileyo yokukhulisa Inqanaba yemveliso eyakhelwe kwimiba semiconductor transistors. Bunika imveliso ixabiso ezinqwenelekayo. Uninzi izigaba msindo odiyo abe Class A, B no AB. Xa kuthelekiswa ne nqanaba yemveliso kuphunyezwa eklasini D, i ukusasaza amandla kumgama owazisayo izigaba ezibalulekileyo nokuba kwindibano efanelekileyo. Lo mba inika iklasi D inzuzo ebalulekileyo izicelo ezininzi ngenxa ukusasaza encinane ubushushu, imilinganiselo ezincinane, ixabiso eliphantsi ngemveliso kunye nokwandisa ixesha yokusebenza yamacebo.

Audio yokukhulisa Class D babe ukusasaza lwamandla usezantsi kakhulu yokukhulisa A, B no AB iiklasi. Iindlela e ophumayo isigaba imveliso wokukhulisa elidityaniswe, ezimbi nezilungileyo amandla ibhasi, ngaleyo ndlela uthotho la nge HIV kunye isakhono elibi. sesimangalo D-class ngenxa imilo umqondiso enjalo kunciphisa kakhulu loo melelo wokuzibhubhisa namandla, ngenxa yokuba ubukho yangoku ngokusebenzisa transistors imveliso, umahluko okunokwenzeka kakhulu ayilwamkeli (i transistor sikwimo closed). Ukuba transistor kwimo ngaphandle kwaye ngoku kungenela singenelayo, amandla ombane kancinci tsakisi kwalo. Amandla leso dissipated kule meko engephi.

Nangona wokukhulisa amandla iklasi D uyakhululeka imali encinci amandla thermal xa kuthelekiswa yokukhulisa yomgama, kusekho ingozi nobushushu wesekethe. Oku kwenzeka xa ifowuni isebenza ixesha elide kwimowudi ngamandla ngokupheleleyo. Ukunqanda le nkqubo, oko kuyimfuneko lo mshini D-class ukuba yesekethe ulawulo lobushushu. Le iziphaluka zokukhusela aphantsi kwi imveliso isigaba icinyiwe xa lobushushu kulinganiswa ngu menzi woluvo oludityanisiweyo idlula threshold lobushushu ukuba ukuvula de ubushushu kusithwa eqhelekileyo. Kakade ke, kusenokwenzeka ukuba ukusebenzisa kwiziphaluka ezintsonkothileyo ngakumbi ulawulo lobushushu. Umzekelo, ukulinganisa iqondo lobushushu, isiphaluka ulawulo nga ngcembe ukunciphisa ivolyum, yaye ngaloo ndlela ukunciphisa ubushushu, nto leyo kwamaqondo obushushu aya kugcinwa ngaphakathi kwemida ezifunekayo. Inzuzo kumacebo kukuba ifowuni iza kuqhubeka ukusebenza kwaye awuyi inqanyulwe.

yokukhulisa D-class babe ethile - xa ukujika isixhobo avele kuso ecofa kunye pops, leyo inokukucaphukisa abasebenzisi. Le isiphumo kunokwenzeka ukuba i "ukwaluphala" okanye ufakelo abaziintsizana modulator, kunye kwimo imveliso imeko Inqanaba LC-lokucoca ngexesha ukhanyisa kwaye yeka kwefowuni.