Video: Yuav ua li cas koj xam qhov siab tshaj voltage ntawm RMS?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Peak tus nqi yuav yog xam los ntawm RMS cov txiaj ntsig los ntawm cov qauv saum toj no, uas txhais tau tias VP = V RMS × √2, piv txwv li lub hauv paus yog ib tug ntshiab sine yoj. Yog li cov ncov tus nqi ntawm lawv hluav taws xob nyob rau hauv teb chaws USA yog hais txog 120 × √2, orabout 170 volts. Cov ncov -rau- ncov voltage Qhov no yog ob npaug, yog hais txog 340 volts.
Kuj paub yog, koj ua li cas xam RMS voltage?
RMS Voltage Equation Ces tus RMS qhov hluav taws xob (V RMS ) ntawm ib tug sinusoidal waveform yog txiav txim los ntawm multiplying lub ncov tus nqi voltage los ntawm 0.7071, uas yog tib yam li ib tug faib bythe square cag ntawm ob (1/√2).
Qhov thib ob, qhov kev sib raug zoo ntawm RMS thiab qhov siab tshaj qhov hluav taws xob yog dab tsi? Cov ncov tus nqi yog siab tshaj hluav taws xob hais tias lub waveform yuav puas mus txog, zoo li lub ncov yog qhov chaw siab tshaj ntawm ib lub roob. Cov RMS ( Root-Mean-Square ) value is the effective value of the tag nrho waveform. Nws yog sib npaug rau theem ntawm DC teeb liab uas yuav muab tib lub zog nruab nrab asthe lub sij hawm teeb liab.
Tsis tas li lo lus nug yog, koj ua li cas xam qhov siab tshaj voltage?
Yog koj muab qhov nruab nrab hluav taws xob tus nqi, youcan xam lub ncov -rau- ncov voltage siv cov saum toj no qauv . Txhua yam koj yuav tsum ua kom tau txais tus nqi RMS yog tag nrho qhov nruab nrab hluav taws xob los ntawm π, uas yog 3.14159.
Vim li cas RMS siv?
Kev sim nrhiav tus nqi nruab nrab ntawm AC yuav ncaj qha rau koj cov lus teb xoom Li no, RMS tus nqi yog siv . Lawv pab nrhiav tus nqi zoo ntawm AC (voltageor tam sim no). Qhov no RMS yog lej lej ( siv nyob rau hauv ntau yam lej) siv los sib piv ob qho tib si alternating thiab ncaj tam sim no (los yog voltage).
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