Txoj cai ntawm Far Infrared Thermometer Performance Index ntawm Far Infrared Thermometer
1.5 volts: Qhov no yog ntsuas lub zog ntawm 1.5 volt roj teeb, thiab cov zaub yog qhov voltage
Diode buzzer: Nws tuaj yeem ntsuas qhov unidirectional conduction ntawm lub diode, thiab tus naj npawb tso tawm yog qhov voltage poob ntawm lub diode, hauv millivolts. Lub buzzer yog siv los ntsuam xyuas lub on-off, uas yog heev tswv yim.
Ω: cov ntaub ntawv tiv thaiv, nco ntsoov tua lub zog thaum ntsuas qhov tsis kam.
HFE: Ntsuas qhov ntsuas tsis tau ntawm lub triode, qhia qhov loj ntawm lub triode. Tsis muaj cov hlau lead rau ntsuas lub triode, thiab muaj lub qhov (socket) triode.
Cov hlau nyob: Koj tuaj yeem ntsuas cov hlau nyob, pinch qhov ntsuas dub lossis hauv av, ib qho nrog HV cim yog cov hlau nyob.
V-: DC voltage cov ntaub ntawv, txuas nrog nyob rau hauv parallel mus rau kab sim, DC voltage muaj qhov zoo thiab tsis zoo.
V ~: AC voltage ntau, tib yam li saum toj no, tsuas yog tus nqi zoo.
A ~: Nyob rau hauv AC tam sim no ntau yam, koj yuav tsum tau txuas lub multimeter mus rau lub voj voog nyob rau hauv kev sim. Nco ntsoov kwv yees qhov tam sim no. Yog tias koj tsis tuaj yeem kwv yees nws, siv ntau yam.
A--: DC tam sim no iav, tib yam li saum toj no.
F: Capacitance iav, nco ntsoov tso tawm thaum ntsuas capacitance.
Multimeter siv cov qauv
1. Txhawm rau ntsuas, ua ntej saib lub iav txoj hauj lwm. Yog koj tsis saib, koj ntsuas tsis tau.
Ua kom nws tus cwj pwm saib seb lub iav puas yog txhua zaus koj ntsuas
2. Ntsuas tsis hloov lub iav, thiab hloov mus rau nruab nrab tom qab ntsuas
Tsis txhob hloov lub zog ntawm lub siab thaum ntsuas, tshwj xeeb tshaj yog thaum ntsuas qhov hluav taws xob siab thiab muaj zog tam sim no, nws yooj yim rau hlawv tawm lub multimeter.
3. Lub dial yuav tsum yog theem thiab cov kev nyeem ntawv yuav tsum ua kom haum
Lub pointer multimeter yuav tsum tau muab tso rau kab rov tav, thiab nws yuav tsum tau tig ntsej muag thaum nyeem ntawv.
4. Qhov ntsuas qhov ntsuas yuav tsum tsim nyog, thiab qhov sib txawv ntawm rab koob yog ntau tshaj ib nrab
Kwv yees qhov kwv yees ua ntej kev sim, thiab tom qab ntawd xaiv qhov tsim nyog. Yog tias nws tsis tuaj yeem kwv yees, ntsuas nrog ntau qhov loj ua ntej.
5. Ntsuas R yam tsis tau them nqi, ntsuas C thiab tso tawm ua ntej
Nco ntsoov tua lub zog thaum ntsuas qhov tsis kam, thiab nco ntsoov tso tawm thaum ntsuas lub peev xwm.
6. Txhawm rau ntsuas R, hloov mus rau xoom ua ntej, tom qab ntawd hloov mus rau xoom
Nco ntsoov xoom tus pointer multimeter thaum ntsuas qhov tsis kam
7. Cov xim dub thiab qhov tsis zoo yuav tsum tau sau tseg kom meej, thiab cov xim dub hauv lub rooj yuav tsum txuas nrog "ntxiv"
Liab yog qhov zoo thiab dub yog qhov tsis zoo, qhov zoo thiab qhov tsis zoo ntawm tus cwj mem xeem yuav tsum tau paub qhov txawv, tab sis cov xim dub coj mus kuaj yog txuas nrog tus ncej zoo ntawm lub roj teeb sab hauv.
8. Qhov kev xeem kuv yuav tsum tau txuas nrog hauv cov koob, thiab qhov kev xeem U yuav tsum tau txuas nrog tib lub sijhawm
Thaum ntsuas tam sim no, lub multimeter txuas nrog rau hauv cov kab hauv qab kev sim, thiab thaum ntsuas qhov ntsuas hluav taws xob, nws txuas nrog rau qhov sib npaug rau kab hauv kev sim.
9. Lub polarity tsis thim rov qab, ib txhais tes ua tus cwj pwm
Tsis txhob thim rov qab qhov polarity ntawm qhov kev xeem liab thiab dub coj thaum ntsuas qhov hluav taws xob thiab tam sim no, thiab txhim kho tus cwj pwm ntawm kev ua haujlwm ib leeg.
