Nws yuav zoo li tias kev nthuav tawm qhov kev cia siab ntawm qhov hluav taws xob ntawm zaus yog qhov yooj yim. Ib tug tsuas yog yuav tsum tau ua ntawv thov nrog rau qhov tsim nyog thov rau omniscient search engines thiab … xyuas kom meej tias tsuas yog tsis muaj lus teb rau lo lus nug no. Yuav ua li cas? Wb sib tham txog qhov teeb meem nyuaj no ua ke.
Voltage lossis qhov sib txawv?
Nws yuav tsum tau muab sau tseg tias qhov hluav taws xob thiab qhov sib txawv muaj peev xwm yog ib qho thiab tib yam. Qhov tseeb, qhov no yog lub zog uas muaj peev xwm ua kom cov nqi hluav taws xob txav mus rau hauv cov kwj deg. Tsis muaj teeb meem qhov kev txav no mus qhov twg.
Muaj peev xwm sib txawv tsuas yog lwm qhov kev qhia rau qhov hluav taws xob. Nws yog qhov tseeb dua thiab tej zaum nkag siab ntau dua, tab sis nws tsis hloov lub ntsiab lus ntawm qhov teeb meem. Yog li, lo lus nug tseem ceeb yog qhov twg qhov voltage los ntawm thiab nws nyob ntawm dab tsi.
Raws li 220 Volt hauv tsev network muaj kev txhawj xeeb, cov lus teb yooj yim. Ntawm lub tshuab hluav taws xob hluav taws xob, cov dej ntws tawm tig lub rotor ntawm lub tshuab hluav taws xob. Lub zog rotational yog hloov mus rau hauv lub zog hluav taws xob. Lub tshuab hluav taws xob nuclear ua ntej hloov dej rau hauv chav. Nws tig lub turbine. Nyob rau hauv ib tug roj av fais fab nroj tsuag, lub rotor yog tig los ntawm lub zog ntawm burning roj av. Tseem muajLwm qhov chaw, tab sis lub ntsiab lus tseem ceeb ib yam: lub zog hloov mus rau qhov hluav taws xob.
Nws yog lub sijhawm los nug cov lus nug txog kev vam khom ntawm qhov hluav taws xob ntawm zaus. Tab sis peb tseem tsis tau paub tias qhov zaus tuaj qhov twg.
Qhov twg yog qhov twg
tib lub tshuab hluav taws xob. Qhov zaus ntawm nws txoj kev sib hloov hloov mus rau hauv cov cuab yeej hluav taws xob ntawm tib lub npe. Tig lub tshuab hluav taws xob sai dua - qhov zaus yuav siab dua. Thiab vice versa.
Tus Tsov tus tw tsis tuaj yeem "wag" tus dev. Vim tib yam, zaus tsis tuaj yeem hloov voltage. Yog li ntawd, cov lus qhia "voltage piv rau tam sim no zaus" tsis muaj kev nkag siab?
txhawm rau nrhiav cov lus teb, koj yuav tsum tsim cov lus nug kom raug. Muaj lus hais txog tus neeg ruam thiab 10 tus pundits. Nws nug cov lus nug tsis raug thiab lawv teb tsis tau.
Yog tias koj hu qhov kev ntxhov siab lwm lub ntsiab lus, txhua yam yuav poob rau hauv qhov chaw. Nws yog siv rau circuits uas muaj ntau yam sib txawv. "Voltage poob". Ob qho kev qhia feem ntau suav hais tias yog qhov sib txawv, uas yuav luag ib txwm tsis yog. Vim tias qhov poob qis tuaj yeem nyob ntawm qhov zaus.
Vim li cas qhov hluav taws xob poob?
Yog, tsuas yog vim nws pab tsis tau tab sis poob. Yog li. Yog hais tias ntawm ib tug ncej ntawm lub peev xwm yog 220 volts, thiab nyob rau lwm yam - xoom, ces qhov poob no tsuas tshwm sim nyob rau hauv lub Circuit Court. Ohm txoj cai hais tias yog tias muaj ib qho kev tawm tsam hauv lub network, ces tag nrho cov voltage ntawm nws yuav poob. Yog tias ob lossis ntau dua - txhuaqhov poob yuav yog proportional rau nws tus nqi, thiab lawv cov sum yog sib npaug rau qhov pib muaj peev xwm sib txawv.
Yog li cas? Qhov twg yog qhov qhia txog kev vam khom ntawm qhov voltage ntawm qhov zaus ntawm qhov tam sim no? Txog tam sim no, txhua yam nyob ntawm tus nqi ntawm qhov tsis kam. Tam sim no, yog tias koj tuaj yeem nrhiav tau tus resistor uas hloov nws cov kev txwv thaum lub zaus hloov! Ces qhov hluav taws xob poob hla nws yuav hloov tau.
Muaj cov resistors
Lawv tseem hu ua reactive, sib piv rau lawv cov neeg ua haujlwm nquag. Lawv ua li cas los ntawm kev hloov lawv qhov loj? Rau qhov zaus! Muaj 2 hom reactances:
- inductive;
- capacitive.
Txhua qhov kev pom muaj cuam tshuam nrog nws daim teb. Inductive - nrog sib nqus, capacitive - nrog hluav taws xob. Hauv kev xyaum, lawv tau sawv cev feem ntau los ntawm solenoids.
Lawv tau qhia hauv daim duab saum toj no. Thiab capacitors (hauv qab).
Lawv tuaj yeem suav tias yog cov tshuaj tiv thaiv, vim tias cov tshuaj tiv thaiv rau kev hloov pauv ntau zaus yog qhov sib txawv. Inductive reactance nce nrog zaus. Capacitive, ntawm qhov tsis sib xws, ntog.
Tam sim no, muab cov yam ntxwv ntawm reactance, raws li Ohm txoj cai, nws tuaj yeem sib cav tias qhov kev cia siab ntawm qhov hluav taws xob ntawm qhov zaus ntawm qhov hloov pauv tam sim no muaj. Nws tuaj yeem suav nrog rau hauv tus account qhov tseem ceeb ntawm reactances hauv Circuit Court. Tsuas yog kom pom tseeb, peb yuav tsum nco ntsoov tias peb tab tom tham txog qhov ntsuas hluav taws xob hla ntawm lub voj voog.
Thiab tseem muaj
Cov lus nug hauv lub npe ntawm kab lus hloov mus rauexclamatory. Yandex tau rov kho dua. Nws tseem tsuas yog muab cov qauv rau kev vam khom ntawm qhov voltage ntawm zaus rau ntau hom reactances.
Capacitive: XC=1/(w C). Ntawm no yog lub angular zaus, C yog lub capacitance ntawm lub capacitor.
Inductive: XL=w L, qhov twg w yog tib yam li hauv cov qauv dhau los, L yog inductance.
Raws li koj tuaj yeem pom, qhov zaus cuam tshuam rau tus nqi ntawm qhov tsis kam, hloov nws, yog li ntawd, hloov qhov voltage poob. Yog hais tias lub network muaj active resistance R, capacitive XC thiab inductive XL, ces cov sum ntawm cov voltage tee ntawm txhua lub caij yuav sib npaug zos rau qhov sib txawv ntawm qhov chaw: U=Ur + Uxc + Uxl.
