Ob Daim Ntawv Siv Tseem Ceeb ntawm Digital Multivers
Ob Daim Ntawv Siv Tseem Ceeb ntawm Digital Multivers
1. Nrhiav cov xov hluav taws xob tawg hauv cov khoom siv hluav taws xob
Cov qauv no yuav pab kuaj kom tawg hauv cov khoom siv hluav taws xob thiab cov ntsiab lus sib dhos (tawg cov ntsiab lus) hauv cov khoom siv hluav taws xob zoo li hluav taws xob pam khoo lossis cov ntawv siv hluav taws xob.
Kauj Ruam - by -}}} kauj ruam txheej txheem:
Txuas Lub Hwj Chim: Txuas ib qho kawg ntawm insulated, tawg xaim rau cov nyob (kub) ntawm 220V AC lub zog. Tso rau lwm qhov kawg 悬空 (tsis paub).
Teeb multimimetercimeter: Hloov cov digital sib puv rau 2V AC ntau.
Luam theej duab cov xaim: Pib los ntawm lub zog kawg, txav cov kev sojntsuam liab raws txoj kev rwb thaiv tsev. Cov zaub voltage yuav tsum hloov pauv ~ 0. 几伏 (Ob peb lub kaum ntawm Volt).
Txheeb xyuas cov so: Thaum cov voltage nco dheev kom ~ 0.0 几伏 (ob peb puas ntawm volt), so yog ncaj qha hauv qab ntawm kev sojntsuam.
NCO TSEG: Cov txheej txheem no 利用 (siv) lub multimeter qhov rhiab heev rau captitive txuas los ntawm lub rwb thaiv tsev.
2. Sib txawv nyob (kub) thiab nruab nrab
Siv cov multimeter ntawm 20v AC ntau, koj tuaj yeem txheeb xyuas cov xov tooj muaj nyob thiab nruab nrab yam tsis muaj kev sib cuag.
Txoj Kev 1 (kov cov xaim hluav taws xob):
Tuav lub pultatimeter cov kev sojntsuam dub (lossis tawm ntawm nws txiav tawm).
Ntsej muag cov kev sojntsuam liab lub insulated thiab maj mam kov lub rwb thaiv tsev ntawm txhua lub xaim.
Kev nyeem ntawv siab dua (~ 6.01v): qhia txog cov nyob (kub).
Kev txo qis (~ 0.4v): Qhia txog qhov nruab nrab ntawm cov hlau.
Txoj kev 2 (ntsuas qhov hluav taws xob qhov chaw):
Teeb lub sib txuam rau 20V ac.
Ntxig cov kev sojntsuam liab rau hauv txhua tus kheej (khaws cov kev sojntsuam dub txiav).
Lub qhov nrog lub zog voltage nyeem yog nyob (kub) xaim.
(Principle): The multimeter detects capacitive coupling or electromagnetic induction through the insulation, making this method safe and non-invasive.
Ceev faj: Ib txwm saib xyuas thaum ua haujlwm ze ntawm cov kev ncig. Ua kom cov mulcimeter yog ntsuas kom raug rau voltage ntsuas.
