Lub cim ampere multimeter txhais li cas?

Txheem

Lub cim multimeter amplifier txhais li cas?
Kev piav qhia ntawm lub cuab yeej
Kuj thiab voltage
Amplifier ntau yam
Cov ntawv luv
Yuav siv lub ammeter li cas?

Hauv tsab xov xwm no, peb yuav tham txog lub ntsiab lus ntawm lub cim ammeter ntawm lub multimeter thiab yuav ua li cas siv ammeter.

Lub cim multimeter amplifier txhais li cas?

Lub cim multimeter amplifier tseem ceeb heev yog tias koj xav siv lub multimeter kom raug. Multimeter yog ib qho khoom siv tseem ceeb uas tuaj yeem pab koj hauv ntau lub sijhawm. Nws tuaj yeem siv los ntsuas qhov zoo ntawm cov xov hlau, kuaj cov roj teeb, thiab nrhiav seb cov khoom twg ua rau koj lub voj voog ua haujlwm tsis zoo. Txawm li cas los xij, yog tias koj tsis nkag siab tag nrho cov cim ntawm lub multimeter, nws yuav tsis pab koj ntau.

Lub hom phiaj tseem ceeb ntawm lub cim amplifier yog qhia tus nqi tam sim no ntws los ntawm Circuit Court. Qhov no tuaj yeem ntsuas tau los ntawm kev sib txuas cov multimeter coj hauv cov koob nrog lub voj voog thiab ntsuas qhov hluav taws xob poob hla lawv (Ohm txoj cai). Chav tsev rau qhov ntsuas no yog volts ib ampere (V / A). (1)

Lub cim amplifier yog hais txog lub ampere (A) unit, uas ntsuas cov hluav taws xob tam sim no ntws los ntawm ib lub voj voog. Qhov kev ntsuas no tseem tuaj yeem qhia tau hauv milliamps mA, kiloamps kA lossis megaamps MA nyob ntawm seb tus nqi loj npaum li cas.

Kev piav qhia ntawm lub cuab yeej

Lub ampere yog SI units ntawm kev ntsuas. Nws ntsuas tus nqi ntawm cov hluav taws xob tam sim no ntws los ntawm ib qho taw tes hauv ib thib ob. Ib qho ampere sib npaug rau 6.241 x 1018 electrons dhau los ntawm qee qhov taw tes hauv ib thib ob. Hauv lwm lo lus, 1 amp = 6,240,000,000,000,000,000 electrons ib ob.

Kuj thiab voltage

Resistance yog hais txog qhov kev tawm tsam rau qhov ntws ntawm tam sim no hauv ib qho hluav taws xob hluav taws xob. Kev tsis kam yog ntsuas hauv ohms thiab muaj kev sib raug zoo ntawm qhov voltage, tam sim no thiab tsis kam: V = IR. Qhov no txhais tau hais tias koj tuaj yeem xam qhov tam sim no hauv amps yog tias koj paub qhov voltage thiab tsis kam. Piv txwv li, yog hais tias muaj 3 volts nrog ib tug tsis kam ntawm 6 ohms, ces tam sim no yog 0.5 amperes (3 faib los ntawm 6).

Amplifier ntau yam

m = 10^-3
u = micro or 10^-6
n = nano 10^-9
p = pico 10^-12
k = kilogram thiab nws txhais tau tias "x 1000". Yog li, yog tias koj pom lub cim kA, nws txhais tau tias x tus nqi yog 1000

Muaj lwm txoj hauv kev los qhia txog hluav taws xob tam sim no. Cov chav nyob feem ntau siv ntawm qhov ntsuas ntsuas yog ampere, ampere (A), thiab milliamp (mA).

Formula: Kuv = Q/t qhov twg:
I = hluav taws xob tam sim no hauv amps (A)
Q = tus nqi hauv coulombs (C)
t = lub sijhawm ncua sijhawm hauv vib nas this (s)

Cov npe hauv qab no qhia tau hais tias muaj ntau qhov kev siv ntau thiab submultiples ntawm ampere:

1 MOM = 1,000 Ohm = 1 kOhm
1 mkOm = 1/1,000 Ohm = 0.001 Ohm = 1 mOm
1 nOhm = 1/1,000,000 0 XNUMX Ohm = XNUMX

Cov ntawv luv

Qee cov qauv luv luv hais txog cov hluav taws xob uas koj tuaj yeem ntsib. Lawv yog:

mA - milliamp (1/1000 amp)
μA - microampere (1/1000000 ampere)
nA – nanoampere (1/1000000000 ampere)

Yuav siv lub ammeter li cas?

Ammeters ntsuas tus nqi tam sim no lossis ntws ntawm hluav taws xob hauv amps. Ammeters yog tsim los txuas rau hauv series nrog rau cov Circuit Court uas lawv saib xyuas. Lub ammeter muab qhov tseeb tshaj plaws nyeem ntawv thaum lub voj voog khiav ntawm tag nrho cov load thaum nyeem ntawv.

Ammeters yog siv nyob rau hauv ntau yam kev siv hluav taws xob thiab hluav taws xob, feem ntau yog ib feem ntawm cov cuab yeej nyuaj xws li multimeters. Txhawm rau txiav txim siab seb qhov ammeter loj npaum li cas, koj yuav tsum paub qhov siab tshaj plaws tam sim no. Qhov ntau dua tus naj npawb ntawm amps, qhov dav thiab tuab ntawm cov hlau yuav tsum tau siv rau hauv ammeter. Qhov no yog vim qhov siab tam sim no tsim ib qho chaw sib nqus uas tuaj yeem cuam tshuam nrog kev nyeem cov xov hlau me me.

Multimeters muab ntau lub zog hauv ib lub cuab yeej, suav nrog voltmeters thiab ohmmeters, thiab ammeters; qhov no ua rau lawv muaj txiaj ntsig zoo heev rau ntau yam kev siv. Lawv feem ntau siv los ntawm electricians, electronics engineers thiab lwm yam tradesmen.

Ua tib zoo saib qee qhov ntawm peb cov lus hauv qab no.