Umlawuli we-PWM - ukutsha kwesekethe

Ukuphuhliswa kwezixhobo zecomputer kuhamba ngeendlela ezininzi: ukunciphisa ubungakanani, ukuphucula ubugcisa bezinto eziveliswayo, ukuveliswa kwezicwangciso zobungcali ezintsha, njl njl. Zonke ezi zikhokelo ziyavumelana ngokufanelekileyo nokusetyenziswa kwezinto ezijoliswe kuzo kwiindawo ezahlukeneyo. Ngokuhamba kwexesha, kukho izisombululo zesekethe kunye nobuchwepheshe obutsha obuphucula iimpawu zokusebenza kwezixhobo zombane. Esinye sezi zixhobo singabizwa ngokufanelekileyo ngokuba ngumlawuli we-PWM. Le sixhobo esincinane, esetyenziswa ngokubanzi kwizibonelelo zamandla ahlukeneyo. Iyakwazi indlela yokuguqulwa kwamandla kwaye isebenza ngokugqibeleleyo kwiinkalo ezahlukeneyo zasekhaya nasemveliso.

Umlawuli we-PWM wamanje unesantya esiphezulu kwaye usetyenziswa, umzekelo, ekutshintsheni izixhobo zamandla. Umgaqo wokusebenza kwawo ulula ngokwaneleyo, uguqula i-voltage rhoqo ibe yimijikelezo emacangca yomjikelezo othile wokusebenza kunye nexesha. Ezi ziphawuli zilawula umlinganiselo wesistim esinamandla esekelwe kubashushu. Oku kuvumela ukusebenzisa isekethe engahambelaniyo ukufumana umthombo wempuphu eguquguqukayo. Oku kubalulekile kwizixhobo zombane, apho ubukhulu bubaluleke kakhulu. Umlawuli we-PWM avunyelwe ukudala izixhobo zekhompyutha ezihambelanayo: ii-laptops, iikhomputha, iiTV, njl njl

Ngokunceda, kunokwenzeka ukuqonda izicwangciso zesiphaluka ezahlukahlukeneyo zokulawula isantya sombane wombane. Impendulo kwimeko enokuthi iyenziwe ngamaparitha ahlukeneyo-ngoku okanye i-voltage, ebonisa isimo solawulo. Oku kunokuba ngumgca wokuhamba okanye u- angular velocity, i-EMF yezimoto, umqondiso ukusuka kwiqondo lokushisa, njl. Ngokuxhomekeke kwimeko kunye nomqondiso wamandla, umlawuli we-PWM uya kwandisa okanye anciphise ijubane lemoto. Umzekelo omhle wokusetyenziswa kwesi sixhobo kwimveliso ngumguquli wexesha elide.

Kwizixhobo zasekhaya, eziqhelekileyo ezisetyenziswayo ngumlawuli we-TL494 we-PWM, oye wazibonakalisa esebenza. I-chip ine-generator ene-frequency generated. Oku kunika ukuzimela ngaphandle kweempawu zangaphandle. Imodeli yokusebenza yendlela enye okanye ezimbini ivumela ukutholwa kwamanqaku angqalileyo kunye namagqabantshintshi ekuphumeni, okungasetyenziselwa ukuguqulwa okuqhubekayo. Ngokubanzi, umsebenzi walo ulungiselelwe ukusetyenziswa ekutshintsheni izixhobo zamandla. Inombolo yeziphumo / iziphumo zihlangabezana neemfuno zamasekethe asetshenziswe ngokusetyenziswa kwayo.

Ukongezelela kumasekethe asemgangathweni, abalawuli be-PWM basebenzisa ngokubanzi ekudalweni kwezixhobo ezintsha. Ezinye zazo, zinokwenzeka ukuba ziza kuqaliswa ukusetyenziswa kwinqanaba lezorhwebo. Ngoncedo lwabo, kulula ukuqokelela isicwangciso sokulawula esinokusebenza kwiindidi ezahlukeneyo.

Ngokuphuhliswa kwethekhnoloji yokuvelisa ezi zixhobo, sinokuthi ngexesha, i-compact, izixhobo ezikhawulezayo eziza kuphumeza umgaqo-nkqubo ochazwe ngasentla ziya kubonakala. Oku kuya kuvumela ukuphuhlisa abalawuli abaneempawu ezilungileyo. Ezi zixhobo ziyakwazi ukukhuphisana ne-analog okanye idijithali "abadlali" kwaye zisetyenziswe kwizicwangciso zokulawula zombane wombane.