Qhov tseeb, nruj me ntsis hais lus, qhov "plug" no yog hu ua hloov hluav taws xob hloov hluav taws xob, thiab nws lub hom phiaj yog hloov pauv tam sim no los ntawm daim phiaj hluav taws xob mus rau tam sim no ncaj qha thiab xa mus rau cov khoom siv hluav taws xob. Lub hwj chim adapter ntawm lub laptop loj dua, thiab nws yooj yim dua rau sov tes thaum lub caij ntuj no ~
Vim li cas ho hloov AC rau DC? cia peb pib los ntawm qhov pib
daim duab hluav taws xob daim duab
Hluav taws xob yog ib qho phenomenon. Cov nqi hluav taws xob zoo li qub lossis txav tau tuaj yeem tsim muaj ntau yam tshwm sim hauv lub cev, xws li xob laim pom nyob rau hauv thunderstorms thiab crackling sparks thaum koj tshem koj lub tsho hauv lub caij ntuj no. Tom qab ntawd, cov kws tshawb fawb tau tshawb pom cov kev cai lij choj los ntawm ntau yam kev cuam tshuam hluav taws xob, yog li lawv tau tsim cov roj teeb, lub tshuab hluav taws xob, thiab lub tshuab hluav taws xob.
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DC ua ntej, lossis AC ua ntej?
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220 volts / 50 Hz alternating tam sim no yog cov qauv siv hluav taws xob hauv peb lub teb chaws, ntau tus neeg xav tias txhua yam khoom siv hauv tsev siv hloov tam sim no. Raws li DC lub zog, kuv tsis tuaj yeem xav txog lwm yam tshwj tsis yog "DC inverter cua txias" uas yuav raug hu ua hauv kev tshaj tawm.
Qhov tseeb, tam sim no siv dav dav, thiab koj yuav tsum tau pom nws thiab siv nws. piv txwv:
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txhais
Direct tam sim no yog tam sim no uas nws cov kev taw qhia tsis hloov nrog lub sijhawm.
Alternating tam sim no hais txog qhov tam sim no uas hloov pauv raws sij hawm hauv qhov loj thiab kev coj.
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Los ntawm kev soj ntsuam ntawm oscilloscope, ib qho yog ncaj thiab lwm qhov yog nkhaus ...
Xijpeem, nws yog tag nrho cov hluav taws xob, yog li tsis muaj qhov sib txawv?
Tsis muaj ~ Tsis muaj ~
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Cia peb tig mus rau keeb kwm thiab qhia qee qhov lus xaiv!
Xyoo 1884, nrog rau tsab ntawv qhia los ntawm nws tus tswv haujlwm qub, ib tug tub hluas hu ua Tesla sai sai nce lub nkoj khi rau American Gold Rush. Nws tab tom mus nrhiav nws tus mlom—Thomas Edison, vam tias nws tuaj yeem pab nws ua tiav qhov kev tsim kho tshiab ntawm kev hloov pauv tam sim no.
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Thomas edison
Tsab ntawv nyeem:
"Nyob zoo Edison: Kuv paub ob tug txiv neej zoo, ib tug yog koj thiab lwm tus yog tus tub hluas no."
Lub sijhawm ntawd, Edison tau muag nws lub zog DC rau lub ntiaj teb, thiab nws tsis zoo siab txog AC lub zog txhua. Tab sis nrog tsab ntawv no, Tesla nkag mus rau Edison pab pawg raws li nws xav tau.
Edison tau cog lus tias yuav them nws qhov sib npaug ntawm ib lab nyiaj hauv cov nyiaj niaj hnub no yog tias nws daws tau "DC lub tshuab hluav taws xob thiab lub cev muaj zog."
Tab sis thaum Tesla kho Edison lub tshuab thiab nug "Yuav ua li cas txog lub lab tau cog lus?"
Edison tau luag thiab hais tias, "Tesla, koj tsis nkag siab peb cov neeg Asmeskas kev lom zem."
Tus mlom hauv nws lub siab ploj mus, thiab Tesla, uas raug thuam, sab laug npau taws thiab dhau los ua ib lub tuam txhab ywj pheej. Txij thaum ntawd los, nws tau mob siab rau nws tus kheej rau nws qhov system AC.
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Tesla thiab AC Motor
Thaum lub sijhawm ntawd, Edison's DC system xav tau lub chaw nres tsheb fais fab rau txhua qhov square mile, thiab qhov kev sib kis tau raug txwv vim qhov kev poob ntau dhau ntawm cov txheej txheem sib kis. Tesla's AC system siv cov xov hlau nyias nyias, qhov hluav taws xob ntau dua, kev sib kis tsawg dua thiab kev sib kis ntev. Obviously, AC yog qhov zoo dua.
Lub underdog Edison ua dab tsi?
Yuav kom "dub" hloov tam sim no, Edison muaj lub hlwb loj. Txhiab tsoomfwv cov tub ceev xwm kom hloov lub txim tuag los ntawm kev dai rau hluav taws xob.
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Alternating Current Electrocution Chair
Lawv txawm ntiav cov menyuam yaus los tua cov miv thiab dev uas muaj kev hloov pauv tam sim no, txhawm rau tshaj tawm tias qhov hloov pauv tam sim no "yog qhov txaus ntshai heev".
Hmoov zoo, Tesla tau ntseeg ruaj khov hauv kev ntseeg tias "yog tias koj tsaus ntuj lossis tsis yog, qhov hloov pauv tam sim no nyob ntawd", thiab dhau los ntawm txoj haujlwm teeb pom kev zoo ntawm Columbia Expo, nws tau qhia txog kev ntseeg siab thiab kev nyab xeeb ntawm kev hloov tam sim no, thiab thaum kawg yeej "kev sib ntaus sib tua. ntawm hluav taws xob tam sim no" thiab xa rov qab nws innocence.
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Aerial saib ntawm Columbia Ntiaj Teb Kev Ncaj Ncees
Txij thaum ntawd los, alternating tam sim no tau lees paub, hloov tam sim no ncaj qha, thiab tau dhau los ua lub ntsiab ntawm cov khoom siv hluav taws xob.
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AC lossis DC, leej twg zoo dua?
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Raws li cov kab hluav taws xob txuas ntxiv nce ntxiv, lub zog xa hluav taws xob thiab kev sib kis tau txuas ntxiv mus ntxiv, thiab cov hluav taws xob ncaj qha tau txais txiaj ntsig los ntawm engineers dua. Vim hais tias ncaj qha tam sim no tsis xav tau kev kho thiab lim dej, tsis muaj theem sib txawv, thiab nws kuj tseem ruaj khov. Yuav ua li cas direct tam sim no nce?
Txhawm rau muab nws yooj yim, kev ua haujlwm nce qib yog ua los ntawm AC, thiab AC-DC tuaj yeem hloov dua siab tshiab. Tsis tas li ntawd, los ntawm qhov kev xav ntawm kev lag luam, txawm hais tias DC converter chaw nres tsheb yog kim dua li AC transmission substation, DC kab tsuas yog xav tau ob kab zoo thiab tsis zoo, thiab peb-theem AC kab xav tau peb kab.
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piv txwv
Tam sim no, qhov project kis tau tus mob siab tshaj plaws nyob rau hauv lub ntiaj teb no yog DC project - ± 1100 kV Zhundong-South Anhui project. Tag nrho qhov ntev ntawm txoj haujlwm kab yog 3,324 mais, uas ntev dua li txoj kab ncaj nraim ntawm Harbin mus rau Haikou.
Hauv kev xa hluav taws xob, feem ntau ntau tshaj 30 mais ntawm underwater cables thiab asynchronous kev sib txuas ntawm ob lub AC systems kuj siv ncaj qha tam sim no.
Hloov tam sim no thiab ncaj qha tam sim no muaj lawv tus kheej yam ntxwv. Qee tus neeg ua piv txwv tias kev hloov pauv tam sim no zoo li txoj kev tsheb ciav hlau ceev, thiab tam sim no zoo li lub dav hlau. Ib tug tuaj yeem nres ib nrab, thiab lwm qhov tuaj yeem ya mus rau taw tes. Ib qho twg yuav siv yog nyob ntawm kev txheeb xyuas cov teeb meem tshwj xeeb.
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Vim li cas cov khoom siv hauv tsev siv hluav taws xob ncaj qha?
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Rov qab mus rau thaj chaw ntawm cov khoom siv hauv tsev, cov khoom siv IT (xws li cov xov tooj ntawm tes, khoos phis tawj) thiab cov khoom siv hauv tsev feem ntau siv DC fais fab hauv tsev. Vim tias phau ntawv sau thiab xov tooj ntawm tes yuav tsum yog lub teeb, lub rectifier muab tso rau sab nraud, thaum lub computer desktop, tub yees, cua txias, thiab lwm yam. muab lub rectifier rau hauv cov khoom siv hluav taws xob.
Vim li cas? Rov qab mus rau qhov tseem ceeb, cov tam sim no ncaj qha ntws los ntawm qhov zoo mus rau qhov tsis zoo, thaum hloov pauv tam sim no hloov pauv. Cov khoom siv hluav taws xob ua haujlwm los ntawm kev txheeb xyuas qhov muaj peev xwm siab thiab qis.
Piv txwv li, lub khoos phis tawj muaj peev xwm ntawm 1 thiab tsis muaj peev xwm ntawm 0, thiab qhov hloov pauv tam sim no nws tus kheej yuav muaj lub peev xwm xoom hla, yog li cov khoom siv hluav taws xob tsis tuaj yeem txiav txim siab qhov tseeb.
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Hluav taws xob yog ib qho kev hloov pauv mus tas li thiab nyuaj, thiab tsab xov xwm no pom tseeb tsis tuaj yeem piav qhia txhua qhov xwm txheej. Txawm li cas los xij, yog tias koj tus hluas nkauj nug "Koj puas nqa lub ntsaws rau koj lub xov tooj?" koj tuaj yeem ua siab ntev tshem tawm cov kab lus no thiab kho nws: "Zoo, qhov no hu ua lub hwj chim adapter."
