Xakamaysada PWM - hal-abuurnimo ku circuitry

Horumarinta ee qalabka elektarooniga ah waa on xaquuqda: yaraynta, wanaajiyo technology-soo-saarka ay, soo bixitaanka of xal design cusub, iwm meelaha Kuwan oo dhammu waa heshiis wanaagsan iyadoo la isticmaalayo loogu tala galay qalabka kala duwan ee beeraha. Waqti ka, waxaa schematics iyo farsamooyinka cusub oo kor loogu qaado waxqabadka qalabka elektarooniga ah. Mid ka mid ah qalabka sida hagaagsan oo la odhan karaa xakamaysada PWM. qalab is haysta Tani, taas oo inta badan loo isticmaalo ilaha kala duwan ee korontada. Waxaa fulisaa si ay u diinta danab oo ka shaqeeya iyo sidoo kale in noocyo kala duwan oo qalabka guriga, iyo sidoo kale in goobta shaqada.

xakamaysada PWM Modern ayaa xawaare sare waxaana loo isticmaalaa, tusaale ahaan in bedesheen Koronto. Its mabda 'ka shaqeeya waa mid fudud ilaa xad, waxay badasha danab DC galay karsado qaab ee soo noqnoqoshada iyo waajibaadka wareegga gaar ah. falalkooda Kuwani iyo maarayn module saarka awood badan ku salaysan transistors. Tani waxay u ogolaaneysaa la isticmaalayo nidaamka fudud si aad u hesho ilo danab hagaajin karo. Waxaa muhiim ah in qalabka elektarooniga ah, halkaas oo dhinac waa aasaasiga ah. xakamaysada PWM ogol yahay in la abuuro qalab is haysta elektaroonik ah: laptops, kombiyuutarada, telefishannada, iwm

Waxaa loo isticmaali karaa si ay u hirgeliyaan xal circuit kala duwan loo xakameeyo xawaaraha drive ah. Nala soo xiriir haddii ay taasi la fulin karo sida ay koobin kala duwan - hadda ama danab, kaas oo ka tarjumaya xaaladda wax gacanta. Waxaa laga yaabaa in toosan ama xawaaraha angular of signal EMF motor ka shidma heerkulka, iwm Iyadoo ku xiran xaaladda iyo signal drive, xakamaysada PWM ku kicin doonaa ama hoos u xawaaraha baabuurta. Tusaale wanaagsan ee isticmaalka qalab this for soo saarta a Converter soo noqnoqoshada.

Qalabka guriga ku nool inta badan la isticmaalo PWM TL494 xakamaysada ah, iyo sidoo kale-xaqiijiyay in qalliin. chip The leedahay matoor inta jeer ee isku dhafan. Tani waxay siinaysaa madaxbanaanida ah oo ka calaamadaha dibadda. mode hal ama laba-stroke hawlgalka ogolaanaya calaamadaha isku mar wax soo saarka si toos ah iyo rogay in loo isticmaali karaa isbeddel dheeraad ah. Guud ahaan, iyada oo shaqo filaayo in laga adeegsado in a korontada Beddelashada. Number of I / O buuxiyay shuruudaha ay horey u horumariyo nidaamyada la isticmaalo.

Ka sokow qorsheyaasha caadiga ah, ilaaliyaal PWM waxaa aad loogu isticmaalaa in design ah ee aaladaha cusub. Qaar ka mid ah iyaga ka mid ah, ay u badan tahay, ugu dhakhsaha badan bilaabi doonaa in lagu dabaqo heer warshadeed. Iyada oo ay caawimo waa ay fududahay in la ururiyo nidaamka gacanta ku shaqayn kara, dhinacyo kala duwan.

Iyadoo horumarinta technology-saarka ee qalabka waxaan dhihi karaa in wakhtiga waxaa jiri doona a qalabka-xawaaraha sare ee is haysta in ay hirgeliyaan mabda'a ku xusan. Tani waxay u ogolaaneysaa nidaamiyo si ay u horumariyaan qaab ciyaareed wanaagsan. aaladaha noocan oo kale ah ayaa laga yaabaa in ay analog ama "tartamaya" digital iyo sida loo isticmaalo ee wareeggeedii gacanta korontada tartamaan.