Yuav ua li cas cais cov khoom siv hluav taws xob hloov
Tag nrho cov khoom siv hluav taws xob hloov hluav taws xob peb tau los rau hauv kev sib cuag nrog kev ua haujlwm ntawm lub hauv paus ntsiab lus tias lub raj hloov ua haujlwm hauv lub xeev hloov. Lub excitation voltage rau kev tsav tsheb kho lub raj tuaj yeem yog square wave pulse width modulation voltage, lossis sine yoj resonance voltage.
Hloov cov khoom siv hluav taws xob tuaj yeem muab faib ua tus kheej zoo siab thiab lwm yam zoo siab raws li txoj kev excitation voltage ntawm regulator raj yog generated.
Tus kheej-excited switching fais fab mov siv lub regulator raj thiab lub auxiliary winding ntawm lub switching transformer los ua ib tug pem hauv ntej thiab flyback voj kom paub nws tus kheej zoo siab oscillation thiab ruaj khov voltage tso zis.
Txij li thaum hloov lub raj ntawm tus kheej-excited switching fais fab mov kuj ua hauj lwm raws li ib tug oscillation raj, tsis muaj yuav tsum tau teem ib tug ntxiv oscillator. Nws lub teeb liab mem tes yog tsim los ntawm nws tus kheej-excited oscillation, uas yog ib tug tsis-taw zaus mem tes teeb liab uas hloov nrog lub input voltage thiab load.
Qhov zaus yog siab ntawm lub teeb load, qis ntawm hnyav load, thiab sib cuam tshuam oscillation tshwm sim ntawm tsis muaj load.
Tus kheej zoo siab switching fais fab mov nws tus kheej muaj qee yam kev tiv thaiv tus kheej. Thaum lub load hnyav dhau lawm, nws yuav inevitably rhuav tshem cov lus tawm tswv yim thiab nres lub oscillation, yog li tiv thaiv lub switching fais fab mov.
Vim nws cov nqi siab tshaj plaws tam sim no, qhov loj ripple tam sim no, tshwj xeeb tshaj yog tsis muaj kev ruaj ntseg thaum ua haujlwm nrog lub zog siab thiab siab tam sim no, nws feem ntau yog siv rau hauv cov ntawv thov hluav taws xob qis dua 60W.
Kev hloov lub raj ntawm qhov sib txawv ntawm qhov sib txawv ntawm lub zog hloov hluav taws xob tsis koom nrog hauv cov txheej txheem oscillation ntawm cov mem tes excitation, thiab lub oscillator tshwj xeeb tsim cov pulses los tswj lub raj hloov.
Piv txwv li, integrated controllers xws li feem ntau siv integrated circuits UC3842, NCP1200, thiab TL494 tuaj yeem tso tawm PWM pulses nrog adjustable lub luag hauj lwm ratios. Niaj hnub no, ntau tus tswj kev sib koom ua ke tuaj yeem tuaj yeem nce lossis txo qis qhov hloov pauv raws li qhov tso zis hluav taws xob theem, txhawm rau tswj kom muaj lub zog hloov pauv zoo zaus nyob rau hauv cov xwm txheej sib txawv.
Txij li thaum lub tshuab hluav taws xob sib txuas ua ke nrog kev tiv thaiv Circuit Court, tswj Circuit Court, oscillation Circuit Court thiab tawm tswv yim teeb liab nrhiav pom Circuit Court ntawm tib lub nti, nws muaj kev tiv thaiv kev cuam tshuam zoo, yooj yim Circuit Court thiab muaj zog zog, thiab tuaj yeem ua tiav oscillation, voltage tswj, overcurrent, overvoltage thiab Kev tiv thaiv kev ua haujlwm xws li undervoltage yog qhov tsis sib xws los ntawm cov khoom siv hluav taws xob hloov pauv, yog li lawv tau siv ntau thiab ntau dua nyob rau xyoo tas los no.
Raws li cov qauv hauv Circuit Court ntawm lub converter, cov khoom siv hluav taws xob hloov pauv tuaj yeem muab faib ua hom kev sib cais thiab hom tsis sib cais.
Cov yam tsis raug cais feem ntau suav nrog peb hom: hom phaw, hom boost thiab buck-boost hom, uas yog tsim nyog rau tsawg-voltage DC fais fab tuag zaus.
