puls-aavritti modulan

puls-frequency modulation (pee. aff. aim.) kewal dou staron (1 aur 0) kaa upayog karke ack analogue sanket kaa pratinidhitva karane key liye ack modulation vidhi haye. yeh puls-width modulan (pwm) key anuroop haye, jisamen ack varg tarang key kartavya chakr mein ack analogue sanket kaa parimaan kootbaddh kiya jaataa haye. pee. doubleu. aim. key vipareet, jisamen varg daalon kii chaudaai ack sthir aavritti parr bhinn hoti haye, pee. aff. aim. aavritti koo badalate hue varg daalon kii chaudaai koo taya kartaa haye. dusare shabdon mein, puls train kii aavritti namuna antaral parr modulating signal key tatkaal ayam key anusaar bhinn hoti haye. daalon kaa ayam aur chaudaai sthir rakhee jaati haye.
anuprayog.
pee. aff. aim. vargakar daalon kii trains mein analogue sanketon koo kootbaddh karane kii ack vidhi haye aur isaliye isake vibhinn prakaar key anuprayog hain. gair-nishchit aavrittiyon key saath kaam karate samay electronics key design mein vyaavhaarik kathinaaiyaan hoti hain, jaise kii board leout aur chumbakiya ghatak chayan mein sancharan line prabhaav, isaliye aam taur parr, pwm mode koo prathamikta dee jaati haye. haalaanki, aise chuninda mamle hain jinamen pee. aff. aim. mode fayademand haye.
buck convertor.
pee. aff. aim. mode prakaash bhaar chalaate samay step-down dee. see.-dee. see. convertor (buck convertor) kii dakshata badhaane key liye ack samanya takneek haye.
madhyam seey uchch bhaar mein, buck convertor switching tatvon kaa dc pratirodh buck convertor kii samagr dakshata parr haavi hotaa haye. halanki, jaba prakaash bhaar chalaate hain, tou dee. see. pratirodhon key prabhaav cumm hoe jaate hain aur prerak, sandharitra aur switching tatvon mein assie nuksan samagr dakshata mein ack badee bhoomika nibhaate hain. yeh vishesh roop seey asantat mode operation mein sach haye, jisamen inductor current shoonya seey neeche gir jaataa haye, jisake parinamswarup output capacitor kaa nirvahan hotaa haye aur isase bhee adhik hotaa haye.
pee. aff. aim. mode operation switching aavritti koo cumm karane kii anumati detaa haye aur ack niyantran vidhi key liye joe prakaash bhaar key dauran inductor current koo shoonya seey neeche girane seey rokta haye. inductor parr alag-alag chaudaai kii vargakar daalon koo lagu karane key bajaay, ack nishchit 50 pratishat shulk chakr key saath vargakar puls trains kaa upayog inductor koo ack purvanirdhaarit vartamaan seema taka charge karane key liye kiya jaataa haye, phir inductor dhaara koo shoonya seey neeche naheen chhodata haye. inn puls trains kii aavritti koo phir output filter capacitor kii sahaayata seey vaanchhit output voltage kaa utpaadan karane key liye alag-alag kiya jaataa haye.
yeh kaee baar nuksan bachat koo badalane kii anumati detaa haye. inductor koo peak current key gyaat star diye jaate hain, joe yadi santripti dhaara key sambandh mein saavdhaanipoorvak chunaa jaataa haye, tou isake chumbakiya core mein switching nuksan koo cumm curr sakata haye. choonki inductor current koo kabhi bhee shoonya seey neeche naheen aaney diyaa jaataa haye, isaliye output filter capacitor koo discharge naheen kiya jaataa haye aur uchit output voltage banaae rakhane key liye pratyek switching chakr key saath recharge naheen kiya jaataa haye.
yeh sub output voltage aur vartamaan lahar kii keemat parr kiya jaataa haye, joe switching aavritti mein kamee aur puls trains key beach key antar key parinamswarup badhata haye.

