Cov txheej txheem rau nrhiav Cable Breakpoints nrog Digital Multimeter
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>kab hlau rhuav cov ntsiab lus.
Thaum muaj qhov txhaum ntawm cov hlau tawg hauv lub cable los yog hauv lub cable, qhov tseeb qhov chaw ntawm cov hlau tawg yog qhov nyuaj rau kev txiav txim siab vim qhov qhwv ntawm cov ntaub thaiv npog sab nraud. Ib qho 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 muab ncua rau lwm qhov kawg. 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 cov 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 meter). Thaum qhov kev sojntsuam liab txav mus rau qee qhov taw tes, qhov hluav taws xob tso tawm ntawm qhov screen dheev poob rau tsuas yog 0.0 volts (li ib feem kaum ntawm qhov qub voltage). Txog 15cm rau pem hauv ntej los ntawm txoj hauj lwm ntawd (qhov kev sib txuas ntawm qhov kawg) yog qhov tawg ntawm cov hlau (cable).
Thaum siv txoj kev no los xyuas cov xov 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.
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, 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.
Qhov siab tshaj plaws zaub tus nqi ntawm no multimeter yog ± 1999, uas tuaj yeem tso saib "0" thiab polarity. Thaum overloaded, nws qhia "1" lossis "-1", thiab thaum lub roj teeb voltage tsawg dhau, nws qhia lub cim "←". Lub buzzer yog siv rau kev kuaj xyuas luv luv.
