Txoj kev rau cov chaw sib txuas hauv cov xov hlau thiab cables siv cov digital motimeter
In addition to measuring basic parameters such as voltage, current, resistance, capacitance, and transistors, digital multimeters can also be flexibly used to further expand their functions and achieve the goal of multi-purpose use. Here is a method for using a digital multimeter to determine cable>Hlau cable so cov ntsiab lus.
Thaum muaj cov hlau tawg ua txhaum hauv cable lossis sab hauv lub cable, qhov chaw tseeb ntawm cov hlau tawg yog qhov nyuaj los txiav txim vim kev qhwv ntawm cov tawv nqaij rwb thaiv tsev. Ib qho digital pulelimeter tau yooj yim daws cov teeb meem no. Txoj kev tshwj xeeb: Txuas ib qho kawg ntawm cov xaim hluav taws xob tawg (cable) rau cov kav hlau ntawm 220V lub zog loj, thiab ncua lwm qhov kawg. Rub cov digital multiateter rau AC2V txoj hauj lwm, pib los ntawm cov hlau ua ntej kawg ntawm ib txhais tes ua ntu zus (cable), thiab maj mam txav cov kev sojntsuam liab raws li cov hlau. Nyob rau lub sijhawm no, tus nqi voltage tso tawm ntawm lub vijtsam yog hais txog 0.445V (ntsuas los ntawm DT890D 'meter'). Thaum daim ntawv soj ntsuam liab tsiv mus rau ib qho taw tes, tus qauv hluav taws xob tso rau ntawm lub vijtsam dheev tee rau li 0.0 volts (txog ib feem kaum ntawm cov thawj voltage). Txog 15cm rau pem hauv ntej los ntawm txoj haujlwm ntawd (cov xaim hluav taws xob tas li xaus) yog qhov tawg ntawm cov hlau (cable).
Thaum siv cov qauv no los saib cov xov hlau thaiv, yog tias tsuas yog cov xaim xaim tawg thiab cov ntaub thaiv npog tsis tawg, tom qab ntawd hom no tsis muaj zog.
Ib tug txheej txheem cej luam ntawm cov digital motalimeter
Ib qho digital pulcim animeter yog cov digital me me ntawm cov digital uas muaj peb thiab ib nrab lej lej LCD. Nws tuaj yeem ntsuas AC thiab DC voltage, AC thiab DC tam sim no, kev nyab xeeb, Diode conduction voltage, thiab circuit Court coaccuit coccuit co. Kev ntsuas kev ua haujlwm thiab ntau yam tau hloov los ntawm kev sib hloov band hloov, nrog tag nrho ntawm 30 qib.
Qhov kawg ntawm cov zaub muaj txiaj ntsig ntawm qhov no multimeter yog ± 1999, uas tuaj yeem tso tawm "0" thiab polarity. Thaum overloaded, nws qhia tawm "1" lossis "-1", thiab thaum lub roj teeb hluav taws xob tsawg dhau, nws qhia tau tias "←" cim. Lub buzzer yog siv rau kev kuaj xyuas luv luv ntawm kev kuaj xyuas.
