Taw qhia rau qhov muaj pes tsawg leeg ntawm DC stabilized fais fab mov
Taw qhia rau DC Voltage Regulators
Nws yog ib qho khoom siv hluav taws xob uas tuaj yeem muab cov khoom siv hluav taws xob DC ruaj khov rau kev thauj khoom. DC tswj fais fab mov fais fab mov feem ntau yog AC fais fab mov, thaum AC fais fab mov voltage lossis load tsis kam hloov, DC tso zis voltage ntawm lub regulator yuav nyob twj ywm. DC tswj fais fab mov nrog cov khoom siv hluav taws xob kom siab precision, siab ruaj khov thiab kev ntseeg siab ntawm cov kev taw qhia ntawm kev loj hlob, lub zog ntawm cov khoom siv hluav taws xob muab tso rau hauv siab xav tau.
Vim yog cov yam ntxwv ntawm cov cuab yeej siv hluav taws xob, cov khoom siv hluav taws xob hauv hluav taws xob hauv hluav taws xob yuav tsum muaj peev xwm muab kev ruaj khov thiab ruaj khov, kom ua tau raws li qhov yuav tsum tau ua ntawm cov khoom siv hluav taws xob, thiab feem ntau yuav tsum tau muab cov DC lub zog ruaj khov. Lub zog hluav taws xob uas muab lub zog DC ruaj khov no yog DC tswj fais fab mov. DC tswj fais fab mov hauv lub tshuab hluav taws xob siv hluav taws xob nyob hauv txoj haujlwm tseem ceeb heev. Tsis tas li ntawd, ntau tus neeg nyiam siv hluav taws xob thaum pib ntawm thawj qhov kev sib ntsib yog los daws qhov teeb meem ntawm kev siv hluav taws xob, txwv tsis pub lub Circuit Court tsis tuaj yeem ua haujlwm, kev tsim hluav taws xob tsis tuaj yeem nqa tawm, kev kawm tsis tuaj yeem pib.
DC tswj fais fab mov kev faib tawm
1. Tawm
Linear stabilized fais fab mov muaj ib qho tshwj xeeb yog tias nws cov khoom siv hluav taws xob tswj lub raj ua haujlwm nyob rau hauv cheeb tsam linear, cia siab rau qhov kev poob qis ntawm cov regulator kom stabilize cov zis. Vim tias qhov hloov kho lub raj zoo li qub poob yog qhov loj, yuav tsum tau nruab ib lub dab dej kub loj los muab nws cov cua sov dissipation. Thiab vim hais tias lub transformer ua haujlwm ntawm qhov zaus (50Hz), yog li qhov hnyav dua.
Qhov zoo ntawm cov khoom siv hluav taws xob no yog kev ruaj ntseg, me me ripple, kev ntseeg siab, yooj yim rau ntau yam, tsis tu ncua adjustable tso zis khoom tiav. Disadvantages yog loj, loj, kuj tsis tshua muaj efficiency. Hom khoom siv hluav taws xob ruaj khov no thiab muaj ntau yam ntawm cov khoom tso tawm tuaj yeem muab faib ua qhov voltage stabilized fais fab mov thiab tam sim no stabilized fais fab mov thiab voltage stabilized thiab tam sim no stabilized nyob rau hauv ib qho ntawm cov stabilized voltage thiab tam sim no stabilized (ob chav stabilized) fais fab mov. Los ntawm tus nqi tso zis tuaj yeem muab faib ua cov khoom siv hluav taws xob ruaj khov, hloov pauv hloov tau thiab potentiometer tsis tu ncua kho hom. Los ntawm cov zis qhia tau muab faib ua pointer indication type thiab digital display type thiab thiaj li nyob.
2. Hloov hom
Nrog rau cov kab hluav taws xob tswj hluav taws xob yog cov chav sib txawv ntawm kev tswj hwm lub zog yog hloov DC tswj fais fab mov, nws hom Circuit Court yog tsuas yog ib leeg-kawg flyback, ib leeg-kawg rau pem hauv ntej, ib nrab-choj, thawb-rub thiab tag nrho-bridge. Qhov sib txawv ntawm nws thiab cov khoom siv hluav taws xob tawm yog tias nws hloov pauv tsis ua haujlwm ntawm qhov zaus, tab sis ua haujlwm hauv kaum ntawm kilohertz mus rau ob peb megahertz. Tube muaj nuj nqi tsis ua hauj lwm nyob rau hauv lub saturation thiab txiav-tawm cheeb tsam uas yog switching xeev; switching fais fab mov yog li npe.
Qhov zoo ntawm kev hloov hluav taws xob yog qhov me me, lub teeb yuag, ruaj khov thiab txhim khu kev qha; Qhov tsis zoo ntawm cov khoom siv hluav taws xob linear ripple yog qhov loj (feem ntau Tsawg dua lossis sib npaug li 1% VO (PP), qhov zoo tuaj yeem ua tau ntau tshaj kaum mV (PP) lossis tsawg dua). Nws lub zog tuaj yeem yog los ntawm ob peb watts - ob peb kilowatts muaj cov khoom.
