Ua hauj lwm hauv paus ntsiab lus ntawm thawb-rub switching fais fab mov
Lub rectifier tso zis laub-rub transformer switching fais fab mov, vim lub alternating ua hauj lwm ntawm ob lub raj hloov, yog sib npaug rau ob switching fais fab mov ib txhij outputting zog, thiab nws tso zis hwj chim yog kwv yees li ob npaug ntawm cov zis hwj chim ntawm ib tug switching fais fab mov. Yog li ntawd, lub laub-rub transformer hloov fais fab mov muaj lub zog tso zis ntau thiab ua haujlwm tau zoo. Tom qab choj rectification los yog tag nrho yoj rectification, tsuas yog ib qho me me lim inductance thiab capacitor, thiab cov zis voltage ripple tuaj yeem me me heev.
Nyob rau hauv lub laub-rub Circuit Court, ob lub keyboards S1 thiab S2 yog sib txuas sib txuas, tsim cov theem AC voltages ntawm ob qhov kawg ntawm windings N1 thiab N'1. Hloov lub voj voog lub luag haujlwm tuaj yeem hloov qhov tso zis voltage. Thaum S1 nyob rau, diode VD1 nyob rau hauv lub xeev, thiab tam sim no ntawm inductor L maj mam nce. Thaum S2 nyob rau, diode VD2 nyob rau hauv lub xeev, thiab tam sim no ntawm inductor L maj mam nce. Thaum ob lub qhov hluav taws xob raug kaw, VD1 thiab VD2 yog ob qho tib si rau, sib koom ib nrab ntawm tam sim no. Lub ncov voltage tiv thaiv los ntawm S1 thiab S2 nyob rau hauv lub xeev tawm yog ob zaug Ui. S1 thiab S2 ua ib txhij, uas yog sib npaug rau luv luv Circuit Court nyob rau hauv thawj winding ntawm lub transformer. Yog li ntawd, nws yuav tsum tau zam tias ob lub keyboards ua ib txhij. Lub voj voog ua haujlwm ntawm txhua qhov hloov pauv yuav tsum tsis pub tshaj 50 feem pua, thiab yuav tsum muaj qhov chaw tuag.
Vim muaj kev sib hloov ntawm ob qhov kev tswj kev hloov pauv K1 thiab K2 nyob rau hauv lub laub-rub transformer switching fais fab mov, nws cov zis voltage waveform yog symmetrical, thiab lub switching fais fab mov muab lub hwj chim tso zis rau lub load thoob plaws lub sij hawm ua hauj lwm. Yog li ntawd, nws cov zis tam sim no instantaneous teb ceev yog siab heev, thiab qhov voltage tso zis yam ntxwv zoo heev. Push-rub transformer switching fais fab mov yog lub siab tshaj plaws voltage siv switching fais fab mov ntawm tag nrho cov hloov fais fab mov. Nws tuaj yeem tswj tau lub hwj chim loj loj txawm tias qhov hluav taws xob input tsawg heev. Yog li ntawd, thawb-rub transformer switching fais fab mov yog dav siv nyob rau hauv tsawg input voltage DC / AC inverters los yog DC / DC converter circuits.
Tom qab choj rectification los yog tag nrho nthwv dej rectification, voltage ripple coefficient Sv thiab tam sim no ripple coefficient Si ntawm cov zis voltage ntawm lub laub-rub hloov fais fab mov yog tsawg heev. Tsuas yog tus nqi me me ntawm lub zog cia lim capacitor lossis lub zog cia lim inductor yog xav tau kom tau txais qhov tso zis hluav taws xob nrog qhov hluav taws xob me me ripple thiab tam sim no ripple. Yog li ntawd, thawb-rub switching fais fab mov yog ib tug switching fais fab mov nrog zoo heev tso zis voltage yam ntxwv.
Tsis tas li ntawd, lub transformer ntawm lub laub-rub switching fais fab mov belongs rau bipolar magnetic polarization, nrog ib tug sib nqus induction ntau yam uas yog ntau tshaj li ob zaug ntawm unipolar magnetic polarization, thiab transformer core tsis tas yuav tsum tau tawm ntawm ib tug huab cua sib txawv. Yog li ntawd, qhov sib nqus permeability ntawm lub laub-rub lub zog hloov hluav taws xob transformer core yog ntau zaus ntau dua li ntawm kev xa mus rau pem hauv ntej lossis thim rov qab hloov fais fab mov transformer core nrog unipolar magnetic polarization; Nyob rau hauv txoj kev no, tus naj npawb ntawm cov kauj hloov nyob rau hauv thawj thiab theem nrab windings ntawm lub laub-rub hloov fais fab transformer tuaj yeem muaj ntau tshaj li ob zaug ntawm unipolar magnetic polarization transformer. Yog li ntawd, qhov to-txheej inductance thiab tooj liab tsis kam poob ntawm lub laub-rub lub zog hloov pauv hloov pauv me dua li ntawm unipolar magnetic polarization transformers, thiab kev ua haujlwm ntawm kev hloov cov khoom siv hluav taws xob yog siab heev.
Nyob rau hauv lub laub-rub hloov pauv hloov pauv hloov pauv, lub zog hloov pauv hloov pauv los ntawm ob lub transistors. Thaum tib lub zog tso tawm, qhov tam sim no tsuas yog ib nrab ntawm qhov kawg ntawm ib qho kawg hloov hluav taws xob transistor, uas ua rau txo qis kev hloov pauv thiab kev txhim kho hauv kev ua haujlwm.
