Txoj kev siv lub digital multimeter los txiav txim cov ntsiab lus ntawm cov xov hlau thiab cable
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 one meter for multiple purposes. Here is a method for using a digital multimeter to determine cable>hlau thiab cable tawg cov ntsiab lus.
Thaum muaj qhov tawg ntawm cov hlau tsis raug hauv ib lub cable lossis cable, qhov tseeb ntawm cov hlau tawg yog qhov nyuaj rau kev txiav txim siab vim qhov qhwv ntawm daim tawv nqaij sab nraud. Kev siv digital multimeter tuaj yeem daws qhov teeb meem no yooj yim. Txoj kev tshwj xeeb: Txuas ib kawg ntawm cov hlau tawg (cable) mus rau cov hlau nyob ntawm 220V lub zog hluav taws xob, thiab tshem tawm lwm qhov kawg hauv huab cua. Rub lub digital multimeter mus rau AC2V txoj haujlwm, pib los ntawm kev sib txuas ntawm cov xov hlau nyob kawg ntawm cov xaim (cable), tuav lub taub hau ntawm qhov kev sojntsuam dub nrog ib txhais tes, thiab maj mam txav lub xov tooj liab raws li cov rwb thaiv tsev ntawm cov hlau nrog rau lwm cov tes. . Lub sijhawm no, tus nqi hluav taws xob tso tawm ntawm qhov screen yog li 0.445V ( ntsuas los ntawm DT890D hom meter). Thaum lub xov tooj liab txav mus rau ib qho chaw, qhov hluav taws xob tso tawm ntawm lub vijtsam zaub dheev poob rau ob peb kaum ntawm volts (kwv yees li ib feem kaum ntawm qhov qub voltage), thiab txog 15cm rau pem hauv ntej (los ntawm qhov kawg ntawm kev sib txuas ntawm lub xov tooj nyob) los ntawm txoj hauj lwm ntawd yog qhov twg cov hlau (cable) breakpoint nyob.
Thaum siv txoj kev no los xyuas cov hlau thaiv, yog tias tsuas yog cov tub ntxhais hlau tawg thiab cov txheej thaiv thaiv tsis tawg, ces txoj kev no tsis muaj zog.
Txheej txheem cej luam ntawm Digital Multimeters
Ib tug digital multimeter yog ib qho me me digital multimeter nrog peb thiab ib nrab tus lej LCD zaub. Nws tuaj yeem ntsuas AC thiab DC voltage, nrog rau AC thiab DC tam sim no, tsis kam, capacitance, transistor beta tus nqi, diode conduction voltage, thiab luv luv Circuit Court. Kev ntsuas kev ua haujlwm thiab ntau yam hloov pauv los ntawm kev hloov pauv hloov pauv, nrog rau tag nrho 30 qib.
