Video: 12va txhais li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
VA = volts times Amps, yog li (tsis quav ntsej cov kaum sab xis thiab ib tus tswv tsev ntawm cov lej nyuaj **), 24V, 12 VA tsis yog ib txoj kev hais ib nrab ntawm amp. ** Chav tsev ntawm VA feem ntau siv nyob rau hauv AC circuits, qhov twg voltage thiab tam sim no yuav tsis nyob rau theem. Lub wattage yog tam sim no tseg rau hauv-theem tivthaiv.
Khaws qhov no hauv kev txiav txim siab, puas yog Va tib yam li Watts?
Ob leeg watts (W) thiab volt-amperes ( VA ) yog cov ntsuas ntsuas hluav taws xob. Watts xa mus rau "lub zog tiag tiag," thaum volt-amperes xa mus rau "pom meej lub zog." Feem ntau, cov khoom siv hluav taws xob qhia ib lossis ob qho ntawm cov txiaj ntsig no los muab cov ntaub ntawv hais txog lawv yuav siv zog npaum li cas lossis ntau npaum li cas tam sim no lawv yuav kos.
Ib tug kuj nug, 40va txhais li cas? 40 VAJ yog "Volts times Amps," uas feem ntau ze txaus rau 40 Watts rau lub hom phiaj hobbyist. Yog vim li cas lawv hais tias "VA" tsis yog "W" yog tias yog tias koj qhov hluav taws xob poob qis (lossis ua) tam sim no, koj tau txais (VA) lub sij hawm (cosine ntawm lub kaum sab xis ntawm V thiab A), tsis yog VA xwb.
Tom qab, ib tug kuj nug, dab tsi yog 1000va?
Volt-ampere (VA) yog ib qho kev ntsuas ntawm lub hwj chim hauv ib qho hluav taws xob tam sim no (DC) hluav taws xob. Piv txwv li, ib qho khoom siv yuav raug ntsuas ntawm 600 VA. Qhov no ua tsis yog txhais tau tias Nws tuaj yeem xa 600 watts, tshwj tsis yog cov khoom siv tsis muaj kev cuam tshuam. Nyob rau hauv lub neej tiag tiag, qhov tseeb wattage ntsuam xyuas ntawm lub hwj chim mov yog 1/2 rau 2/3 ntawm qhov ntsuas VA.
Dab tsi yog VA hauv cov lus hluav taws xob?
Ib volt-ampere ( VA ) yog lub tsev siv rau qhov pom tseeb zog hauv ib qho hluav taws xob Circuit Court. Lub zog pom meej sib npaug ntawm cov khoom hauv paus-mean-square (RMS) voltage thiab RMS tam sim no. Nyob rau hauv direct tam sim no (DC) circuits, cov khoom no yog sib npaug zos rau lub hwj chim tiag tiag (active zog) nyob rau hauv watts.
Pom zoo:
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