Yuav ua li cas ntsuas tam sim no nrog digital multimeter? Lub hauv paus ntsiab lus ntawm kev ntsuas tam sim no nrog digital multimeter
Kev ntsuas tam sim no nrog multimeter
Kev xaiv ntau yam: Multimeter's DC tam sim no ntau yam yog cim nrog "mA" thiab muaj peb yam: 1mA, 1mA, thiab 100mA. Kev xaiv ntau yam yuav tsum yog nyob ntawm qhov siab tam sim no hauv Circuit Court.
1. Kev xaiv ntau yam: Multimeter's DC tam sim no ntau yam yog cim nrog "mA" thiab muaj peb yam: 1mA, 1mA, thiab 100mA. Kev xaiv ntau yam yuav tsum yog nyob ntawm qhov loj tam sim no hauv Circuit Court. Yog tias qhov loj me tam sim no tsis paub, qhov siab tshaj plaws yuav tsum raug xaiv.
2. Kev ntsuas txoj kev: Lub multimeter yuav tsum tau txuas nrog rau hauv series nrog rau kev ntsuas Circuit Court. Tom qab disconnecting qhov sib thooj ntawm lub Circuit Court, txuas lub multimeter sojntsuam mus rau ob qho tag nrho ntawm lub breakpoint. Kev sojntsuam liab yuav tsum tau txuas nrog lub breakpoint txuas nrog rau tus ncej zoo ntawm lub hwj chim mov, thiab qhov kev sojntsuam dub yuav tsum tau txuas nrog lub breakpoint txuas nrog tus ncej tsis zoo ntawm lub hwj huam mov.
(1) Txuas lub voj voog ua kom lub teeb pom kev zoo li qub.
(2) Npaj lub multimeter raws li kev siv ua ntej yuav tsum tau hais ua ntej thiab tso tus xaiv hloov hauv mA ntau ntawm 100mA.
(3) Tshem tawm qhov nruab nrab kev sib cuag ntawm lub potentiometer thiab qhov tsis zoo ntawm LED los ua ib qho "breakpoint". Lub sijhawm no, lub teeb-emitting diode tawm mus.
(4) Txuas lub multimeter nyob rau hauv series ntawm breakpoint. Txuas lub xov tooj liab mus rau qhov tsis zoo ntawm lub davhlau ya nyob twg ntawm LED, thiab txuas cov kev sojntsuam dub mus rau nruab nrab kev sib cuag ntawm cov potentiometer. Lub sijhawm no, LED teeb dua. Tus nqi teev qhia los ntawm multimeter pointer yog tus nqi tam sim no dhau los ntawm lub teeb-emitting diode.
(5) Ua kom raug nyeem tus nqi tam sim no los ntawm lub teeb-emitting diode.
(6) Tig lub potentiometer kov thiab saib xyuas qhov kev hloov pauv ntawm lub ntsuas ntsuas ntsuas thiab qhov ci ntawm lub teeb-emitting diode. Nws tuaj yeem pom tau tias: Cov ntaub ntawv: Qhov siab tshaj plaws tam sim no dhau los ntawm lub teeb-emitting diode yog xx milliamps. Qhov tsawg kawg nkaus tam sim no yog xx milliamps.
Lub hauv paus ntsiab lus ntawm kev ntsuas tam sim no nrog multimeter
Lub hauv paus ntsiab lus ntawm multimeter yog siv lub rhiab magneto hluav taws xob DC ammeter (microampere meter) ua lub taub hau meter.
Thaum ib tug me me tam sim no hla lub 'meter', yuav muaj ib tug qhia tam sim no. Tab sis lub taub hau ' meter ' tsis tuaj yeem hla cov tam sim no siab, yog li nws yuav tsum tau shunt lossis txo qhov hluav taws xob los ntawm kev txuas qee cov resistors nyob rau hauv parallel lossis series ntawm lub taub hau 'meter', txhawm rau ntsuas qhov tam sim no, qhov hluav taws xob, thiab kev tiv thaiv hauv Circuit Court.
Cov txheej txheem ntsuas ntawm lub tshuab hluav taws xob digital yog hloov mus rau hauv DC voltage teeb liab los ntawm kev hloov pauv hluav taws xob, thiab tom qab ntawd qhov hluav taws xob analog teeb liab tau hloov mus rau hauv cov teeb liab digital los ntawm analog-to-digital (A / D) converter. Tom qab ntawd, nws raug suav los ntawm lub txee hluav taws xob, thiab thaum kawg qhov kev ntsuas tau tshwm sim ncaj qha rau ntawm qhov screen hauv daim ntawv digital.
