Multimeter nrhiav cov luv thiab qhib thiab to
Lub multimeter yog ib qho ntawm cov cuab yeej siv feem ntau rau cov kws kho hluav taws xob, cov neeg ua haujlwm tu, cov kws tsim hluav taws xob, thiab cov kws kho vajtse. Nws yuav tsum yog qhov tseem ceeb thaum kuaj cov hluav taws xob hluav taws xob thiab nrhiav qhov tsis raug. Ib qho me me multimeter muaj zog ua haujlwm. Nws tuaj yeem ntsuas qhov tsis kam, capacitance, diodes, transistors, DC voltage, AC voltage, tam sim no, thiab lwm yam. Nrhiav cov luv luv Circuit Court, qhib circuits, thiab to yog qhov yooj yim tshaj plaws ua haujlwm ntawm multimeter. Kawm siv lub multimeter yog ib qho yooj yim. Kev txhaum ua koj tus kheej.
Yuav Ua Li Cas Nrhiav Short Circuits Siv Multimeter
Kev ntsuas luv-circuit feem ntau yog siv hauv kev kho hluav taws xob thiab qhov chaw ua txhaum. Thaum ntsuas qhov yuam kev luv luv, nco ntsoov tshem tawm cov khoom siv hluav taws xob, thiab nco ntsoov tsis txhob ua haujlwm nrog lub hwj chim. Rau kev ntsuas luv luv, siv lub buzzer lossis ohm iav ntawm multimeter los ntsuas. Nws yog ntau intuitive siv lub buzzer los ntsuas. Thaum txoj kab luv luv, lub multimeter yuav ncaj qha "buzz". Thaum buzzing tshwm sim, yog tias koj xav paub qhov kev tawm tsam ntawm ob kab ntau dua, koj tuaj yeem siv 200Ω ntau los ntsuas. Siv lub buzzer los ntsuas, qee zaum qhov kev tawm tsam sab hauv ntawm ob lub teeb liab me me, nws yooj yim rau kev txiav txim siab, xws li relay / contactor coil, impedance ntawm ntau relay / contactor coils yog tsawg dua 75Ω, siv lub buzzer los ntsuas. ua Tus buzzer xav tias muaj luv luv, tab sis nws tsis yog.
Engineers feem ntau siv lub buzzer ntawm lub multimeter kom sai sai nrhiav qhov luv luv-circuit point ntawm kab los yog cov khoom, xws li ntsuas seb qhov kev tiv thaiv thiab capacitance yog luv luv, seb lub diode puas rov qab los, seb lub triode puas tawg. (lub hauv paus thiab emitter feem ntau yog luv luv thaum lub triode tawg), Txawm hais tias muaj luv luv Circuit Court ntawm lub zog ntawm cov khoom siv hluav taws xob sib xyaw thiab hauv av, seb puas muaj luv luv ntawm ob tus pins, thiab lwm yam.
