Dab tsi yog qhov txawv ntawm linear tswj fais fab mov thiab lub zog hloov hluav taws xob
Lub linear tswj fais fab mov hloov thiab tswj nws cov zis voltage thiab tam sim no los ntawm kev hloov cov conduction degree ntawm transistor. Nyob rau hauv lub linear tswj fais fab mov, lub transistor yog sib npaug rau ib tug kuj sib txawv resistor, uas yog txuas nyob rau hauv series nyob rau hauv lub hwj chim mov Circuit Court. Txij li thaum lub varistor ntws tib yam tam sim no raws li lub load, nws dissipates ntau lub zog thiab heats li, ua rau tsis tshua muaj voltage conversion efficiency. Ib tug yam ntxwv ntawm cov khoom siv hluav taws xob linear tswj yog tias nws cov khoom siv hluav taws xob hloov kho lub raj ua haujlwm hauv cheeb tsam linear, thiab cov zis tau ruaj khov los ntawm kev kho qhov hluav taws xob poob ntawm lub raj electrodes. Vim qhov loj zoo li qub poob ntawm lub raj hloov, nws yog ib qho tsim nyog yuav tsum tau nruab ib lub radiator loj kom dissipate cua sov. Txij li thaum lub transformer ntawm linear fais fab mov ua hauj lwm ntawm lub hwj chim zaus (50Hz), qhov zoo yog kuj loj.
Cov khoom siv hluav taws xob tswj hluav taws xob feem ntau siv rau hauv cov ntawv siv hluav taws xob tsawg, xws li LDOs uas yuav tsum tau ua kom tau raws li qhov sib txawv voltage. Cov zis hluav taws xob hloov kho tus nqi thiab ripple yog qhov zoo, qhov ua tau zoo kuj tsis tshua muaj, cov khoom siv peripheral yuav tsum tau me me, thiab tus nqi qis. Lub Circuit Court yog qhov yooj yim.
Qhov zoo ntawm linear tswj fais fab mov yog kev ruaj ntseg, me me ripple, kev ntseeg siab, thiab nws yog ib qho yooj yim los ua ib tug multi-channel tso zis tsis tu ncua adjustable fais fab mov. Qhov tsis zoo yog tias nws loj heev, cumbersome, thiab kuj tsis muaj txiaj ntsig. Muaj ntau ntau hom kev tswj fais fab mov, uas tuaj yeem muab faib ua cov khoom siv hluav taws xob, tswj cov khoom siv hluav taws xob tam sim no thiab tswj qhov hluav taws xob thiab tam sim no (bistable) fais fab mov kev sib koom ua ke tswj hluav taws xob thiab tswj tam sim no los ntawm cov khoom tso tawm. Los ntawm qhov pom ntawm tus nqi tso zis, nws tuaj yeem muab faib ua cov khoom siv hluav taws xob ruaj khov, hloov pauv hloov hom thiab potentiometer tsis tu ncua kho hom. Los ntawm cov zis qhia tawm, nws tuaj yeem muab faib ua tus taw qhia taw qhia hom thiab hom duab digital.
Cov khoom siv hluav taws xob hloov pauv yog tsim nyog rau tag nrho cov khoom siv hluav taws xob, tsis tas yuav tsum muaj qhov poob qis, thiab tuaj yeem siv cov kev sib txawv ntawm cov khoom siv hluav taws xob kom ua tiav cov kev xav tau sib txawv. Kev hloov kho tus nqi thiab cov zis ripple tsis zoo li cov khoom siv hluav taws xob linear, thiab kev ua haujlwm siab. Ntau yam khoom siv peripheral yuav tsum tau ua thiab tus nqi siab. Lub Circuit Court yog qhov nyuaj. Lub hom phiaj ntawm kev hloov DC fais fab mov feem ntau suav nrog ib qho kawg flyback, ib leeg-kawg rau pem hauv ntej, ib nrab-choj, thawb-rub thiab tag nrho-bridge. Qhov tseem ceeb sib txawv ntawm nws thiab cov kab hluav taws xob tswj hluav taws xob yog qhov hloov pauv hauv Circuit Court tsis ua haujlwm ntawm lub zog zaus tab sis ua haujlwm ntawm kaum ntawm kilohertz mus rau ob peb megahertz. Lub hwj chim raj tsis ua hauj lwm nyob rau hauv lub linear cheeb tsam, tab sis nyob rau hauv lub saturation thiab cut-off cheeb tsam, uas yog, nws ua hauj lwm nyob rau hauv lub switching xeev; lub switching DC fais fab mov muaj npe tom qab no.
