Lub zog transformers ua haujlwm li cas?
Fais fab transformer yog ib qho cuab yeej siv lub hauv paus ntsiab lus ntawm electromagnetic induction los hloov AC voltage thiab xa hluav taws xob hluav taws xob. Nws cov khoom tseem ceeb muaj xws li thawj kauj, theem nrab kauj thiab hlau core (magnetic core). Thaum alternating tam sim no dhau los ntawm lub hauv paus kauj, ib qho alternating magnetic teb yog generated, uas dhau los ntawm cov tub ntxhais thiab ua rau induced electromotive quab yuam nyob rau hauv lub thib ob kauj. Los ntawm kev kho qhov sib piv ntawm cov kauj, qhov voltage tuaj yeem nce lossis txo.
Tshwj xeeb, yog tias tus naj npawb ntawm cov lem ntawm lub hauv paus kauj yog ntau tshaj li ntawm cov kauj ruam thib ob, ces qhov tso zis voltage yuav qis dua qhov input voltage kom ua tiav cov kauj ruam-down transformation; conversely, yog hais tias tus naj npawb ntawm cov lem ntawm thawj kauj yog tsawg tshaj li ntawm lub thib ob kauj, cov zis voltage yuav siab tshaj lub input voltage kom ua tau ib tug step-up transformation. Nyob rau tib lub sijhawm, lub transformer tseem tuaj yeem ua tiav qhov kev hloov pauv tam sim no thiab impedance transformation.
Tsis tas li ntawd, lub zog hloov hluav taws xob ua lub luag haujlwm hauv stabilizing qhov voltage hauv lub zog hluav taws xob. Txij li thaum qhov hluav taws xob nyob rau hauv daim phiaj hluav taws xob yuav hloov pauv vim muaj kev hloov pauv ntawm cov khoom thauj, lub zog hloov hluav taws xob tuaj yeem tswj tau qhov kev ruaj ntseg ntawm cov zis hluav taws xob los ntawm kev kho qhov sib piv thiab qhov kais dej, yog li tiv thaiv cov khoom siv thauj khoom los ntawm kev hloov pauv voltage.
Zuag qhia tag nrho, kev ua haujlwm ntawm lub zog hloov hluav taws xob yog ua raws li lub hauv paus ntsiab lus ntawm electromagnetic induction. Los ntawm kev hloov pauv qhov sib piv ntawm cov kauj thiab cov sib nqus flux ntawm cov tub ntxhais, nws tuaj yeem paub qhov kev hloov pauv ntawm qhov hluav taws xob, tam sim no thiab impedance, thaum tswj kev ruaj ntseg ntawm cov zis hluav taws xob los muab kev ntseeg siab rau lub zog hluav taws xob.
Txuas nrog peb:
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