Power Knowledge Introduction
Kev faib tawm ntawm cov khoom siv hluav taws xob tswj tau
Muaj ntau hom kev tswj fais fab hauv kev siv niaj hnub no, thiab muaj ntau txoj kev faib tawm. Nov yog qee qhov kev qhia luv luv.
Raws li kev faib tawm ntawm cov khoom ruaj khov, muaj AC tswj fais fab mov thiab DC tswj fais fab mov. AC tswj cov khoom siv hluav taws xob tso tawm qhov hloov pauv tam sim no, thaum DC tswj cov khoom siv hluav taws xob tso tawm ncaj qha tam sim no.
Raws li hom kev sib txuas ntawm cov khoom hloov kho thiab lub nra ntawm cov khoom siv hluav taws xob, nws tuaj yeem muab faib ua ob hom: kev tswj hwm lub zog sib txuas thiab cov khoom siv hluav taws xob tswj hwm. Kev sib txuas ntawm kev sib txuas ntawm cov khoom hloov kho thiab cov load yog hu ua parallel tswj fais fab mov. Nws yoog raws qhov kev hloov pauv ntawm cov kab hluav taws xob input voltage thiab kev hloov pauv ntawm cov khoom thauj tam sim no los ntawm kev hloov pauv tam sim no ntws los ntawm kev hloov kho kom muaj kev ruaj ntseg ntawm cov zis hluav taws xob. Parallel tswj fais fab mov muaj kev ua haujlwm tsawg thiab tsuas yog siv rau qee lub sijhawm tshwj xeeb. Cov kev tswj fais fab uas qhov kev hloov pauv tau txuas nrog hauv cov khoom siv hluav taws xob yog hu ua series tswj fais fab mov. Nyob rau hauv qhov kev tswj fais fab mov, qhov kev hloov kho yog txuas nrog nyob rau hauv series ntawm lub input davhlau ya nyob twg thiab qhov tso zis davhlau ya nyob twg, thiab cov zis voltage yog khaws cia tas li los ntawm kev hloov qhov sib npaug ntawm cov kev hloov kho. Raws li kev ua haujlwm ntawm cov khoom hloov kho, muaj cov khoom siv hluav taws xob tawm thiab hloov hluav taws xob. Txoj kev kho lub raj ntawm cov khoom siv hluav taws xob linear ua haujlwm nyob rau hauv linear amplification xeev, thaum lub raj hloov ntawm lub zog hloov hluav taws xob ua haujlwm hauv lub xeev hloov.
Kev faib tawm ntawm cov khoom siv hluav taws xob tswj tau feem ntau sib cuam tshuam. Piv txwv li, cov khoom siv hluav taws xob linear tswj tau muab faib ua cov khoom siv hluav taws xob linear thiab cov khoom siv hluav taws xob sib txuas.
Kev sib piv ntawm linear tswj fais fab mov thiab switching tswj fais fab mov
Linear fais fab mov yog ib lub hwj huam mov uas qhov kev hloov kho ua haujlwm nyob rau hauv lub xeev linear. Los ntawm kev hloov cov kev tswj lub teeb liab ntawm qhov kev hloov kho los kho nws qhov sib npaug tsis kam, qhov tso zis ruaj khov los yog tam sim no tuaj yeem tau txais. Lub zog tso zis ruaj khov yog hu ua cov khoom siv hluav taws xob tswj, thiab cov khoom siv hluav taws xob ruaj khov yog hu ua hluav taws xob tswj hluav taws xob. Lub regulator raj ntawm lub switching tswj fais fab mov ua hauj lwm nyob rau hauv lub hloov lub xeev, thiab ib tug ruaj khov voltage tso zis yog tau los ntawm kev kho lub sij hawm piv ntawm lub switching raj raug muab rau thiab tawm. Lub linear tswj fais fab mov muaj qhov zoo ntawm kev ruaj ntseg zoo, kev ntseeg tau zoo, thiab tus nqi qis. Qhov tsis zoo yog qhov ua haujlwm tsawg, loj, thiab ntim loj. Nws tsim nyog rau lub sijhawm uas muaj lub zog nruab nrab thiab me me thiab cov kev xav tau siab ntawm cov ntsuas hluav taws xob ua haujlwm. Lub ntsiab feature ntawm lub switching tswj fais fab mov yog kho cov cuab yeej ua hauj lwm nyob rau hauv lub switching xeev. Vim lub siab hloov zaus, lub hwj chim zaus transformer thiab low-pass lim raug tshem tawm, thiaj li txo qhov ntim thiab qhov hnyav ntawm tag nrho lub tshuab thiab txhim kho kev ua haujlwm.
