Yuav Ua Li Cas Ntsuas Voltage thiab Tam Sim No los ntawm Digital Multimeter
Yuav ua li cas ntsuas voltage ntau nrog digital multimeter
1. Kev ntsuas ntawm DC voltage, xws li roj teeb, Walkman fais fab mov, thiab lwm yam. Ua ntej ntxig cov hlau lead dub rau hauv "com" qhov, thiab cov xim liab coj mus rau hauv "V Ω". Xaiv lub pob qhov rooj rau ntau qhov loj dua li qhov kwv yees (ceeb toom: qhov tseem ceeb ntawm lub xov tooj yog qhov siab tshaj plaws, "V-" qhia txog DC voltage ntau, "V-" qhia txog AC voltage ntau, thiab "A" yog qhov tam sim no ntau), thiab tom qab ntawd tig qhov Txuas qhov kev sim ua rau lub hwj huam mov lossis ob qho kawg ntawm lub roj teeb; khaws kev sib cuag ruaj khov. Tus nqi tuaj yeem nyeem ncaj qha los ntawm lub vijtsam zaub, yog tias nws tshwm sim li "1.", nws txhais tau hais tias qhov ntsuas qhov ntsuas me me dhau lawm, tom qab ntawd nws yog qhov yuav tsum tau nce qhov ntsuas ntau ua ntej ntsuas cov khoom siv hluav taws xob. Yog tias "-" tshwm nyob rau sab laug ntawm tus nqi, nws txhais tau hais tias qhov polarity ntawm qhov kev xeem cov hlau lead yog qhov txawv ntawm qhov tseeb ntawm cov khoom siv fais fab. Lub sijhawm no, cov hlau kuaj liab txuas nrog rau tus ncej tsis zoo.
2. Kev ntsuas ntawm AC voltage. Kev ntsuas cov hlau lead yog tib yam li qhov ntsuas ntawm DC voltage, tab sis lub pob qhov rooj yuav tsum tig mus rau qhov xav tau ntawm AC iav "V ~". Tsis muaj qhov sib txawv ntawm qhov zoo thiab qhov tsis zoo AC voltage, thiab txoj kev ntsuas yog tib yam li ua ntej. Txawm hais tias ntsuas AC lossis DC voltage, ua tib zoo saib xyuas kev nyab xeeb ntawm tus kheej, thiab tsis txhob kov cov hlau ntawm cov hlau lead ntawm koj txhais tes.
Cov txheej txheem ntawm digital multimeter ntsuas tam sim no
1. Kev ntsuas ntawm DC tam sim no. Ua ntej ntxig cov hmoov txhuas dub rau hauv "COM" qhov. Yog tias ntsuas qhov tam sim no ntau dua 200mA, ntxig cov hlau kuaj liab rau hauv "10A" jack thiab tig lub pob qhov rooj rau DC "10A"; Yog tias ntsuas qhov tam sim no tsawg dua 200mA, ntxig cov hlau kuaj liab rau hauv "200mA" jack thiab tig lub pob qhov rooj mus rau qhov tsim nyog nyob rau hauv DC 200mA. Thaum kho, nws yog lub sij hawm los ntsuas. Faib lub multimeter rau hauv Circuit Court, ua kom ruaj khov, thiab koj tuaj yeem nyeem tau. Yog tias nws tshwm sim li "1.", ces nce qhov ntau; yog tias "-" tshwm nyob rau sab laug ntawm tus nqi, nws txhais tau hais tias tam sim no ntws los ntawm cov xim dub coj mus rau hauv multimeter.
Kev ntsuas ntawm alternating tam sim no. Txoj kev ntsuas yog tib yam li 1, tab sis cov iav yuav tsum tau teem rau AC iav. Tom qab qhov ntsuas tam sim no tiav lawm, tus cwj mem liab yuav tsum tau muab tso rau hauv lub qhov "VΩ". Yog tias koj tsis nco qab cov kauj ruam no thiab ntsuas qhov hluav taws xob ncaj qha, haha! Koj lub moos lossis lub zog hluav taws xob yuav "nce mus rau saum ntuj hauv cov pa taws" - muab pov tseg!
