Multimeter kuj cim (Kev ceev thiab cov duab)

Multimeter yog ib yam khoom tsim nyog rau kev kuaj xyuas cov khoom siv hluav taws xob. Nws yog ib qho tseem ceeb kom paub lub cim Om thiaj li yuav siv nws kom raug. Cov neeg siv hluav taws xob paub nyeem ntau lub ntsuas thiab lawv cov cim, tab sis qhov nruab nrab Joe / Jane yuav xav tau qee qhov kev pab, uas yog vim li cas peb nyob ntawm no.

Muaj ob peb lub tswv yim thiab yam tseem ceeb rau kev nyeem ntawv tsis xws li ohms, capacitance, volts thiab milliamps, thiab leej twg tuaj yeem paub qhov ntsuas ntsuas.

Txhawm rau nyeem cov cim tiv thaiv ntawm multimeter, koj yuav tsum muaj kev nkag siab yooj yim ntawm voltage, tsis kam thiab txuas ntxiv ntawm kev nyeem ntawv; lub tswv yim hais txog diode thiab capacitance xeem, phau ntawv thiab pib ntau yam, thiab connectors thiab nyees khawm.

Multimeter cim koj yuav tsum paub

Ntawm no peb yuav tham txog voltage, tsis kam thiab txuas ntxiv.

• Voltage pab ntsuas qhov hluav taws xob ncaj qha (DC) voltage thiab alternating tam sim no (AC) voltage. Lub wavy kab saum toj V qhia AC voltage. Cov kab dotted thiab khoom V qhia txog DC voltage. mV nrog ib kab dotted thiab ib kab wavy txhais tau tias millivolts AC lossis DC.
• Tam sim no tuaj yeem yog AC lossis DC thiab ntsuas hauv amperes. Cov kab wavy sawv cev rau AC. Ib tug nrog ib tug dotted kab thiab ib tug khoom kab qhia DC.(1)
• Ib qho multimeter kuj tseem siv los ntsuas qhov qhib Circuit Court hauv hluav taws xob hluav taws xob. Muaj ob qhov kev ntsuas tsis kam. Nyob rau hauv ib qho, lub Circuit Court tseem qhib thiab lub meter qhia infinite kuj. Lwm tus nyeem kaw, uas lub Circuit Court nyeem xoom thiab kaw. Qee qhov xwm txheej, lub ntsuas hluav taws xob yuav nrov tom qab kuaj pom kev txuas ntxiv.(2)

Diode thiab capacitance xeem

Lub diode test function qhia peb seb lub diode puas ua haujlwm lossis tsis ua haujlwm. Lub diode yog ib qho khoom siv hluav taws xob uas pab hloov AC rau DC. Kev ntsuas capacitance suav nrog cov capacitors, uas yog cov khoom siv them nqi, thiab ib lub meter uas ntsuas tus nqi. Txhua multimeter muaj ob lub xov hlau thiab plaub hom txuas uas koj tuaj yeem txuas cov xov hlau. Plaub connectors muaj xws li COM connector, A connector, mAwm Jack, thiab mAmkA txuas.

Manual thiab auto range

Ob hom multimeters tuaj yeem siv tau. Ib qho yog analog multimeter thiab lwm qhov yog digital multimeter. Lub analog multimeter suav nrog ntau qhov chaw teeb tsa thiab muaj tus taw qhia sab hauv. Nws tsis tuaj yeem siv los ntsuas qhov ntsuas rhiab vim tias tus pointer yuav tsis sib txawv ntawm ntau yam. Tus pointer yuav deflect mus rau nws qhov siab tshaj plaws ntawm qhov luv luv thiab qhov ntsuas yuav tsis tshaj qhov ntau.

Lub DMM muaj ntau qhov chaw uas tuaj yeem xaiv tau los ntawm kev hu. Lub ' meter ' cia li xaiv qhov ntau raws li nws tsis muaj ntau qhov chaw. Tsis siv neeg multimeters ua tau zoo dua li phau ntawv ntau yam multimeters.

tswv yim pom zoo

(1) Ohm's Law - https://electronics.koncon.nl/ohmslaw/

(2) Cov ntaub ntawv Multimeter - https://www.electrical4u.com/voltage-or-electric-potential-difference/