Kuv tuaj yeem qhia li cas (kuaj) tias multimeter's AC voltage teeb (ACV) zoo?
Cov khoom siv hauv tsev, AC adapter, cov khoom hluav taws xob hauv tsev (ob theem 220V hom, nws yog qhov zoo tshaj plaws tsis ntsuas peb-theem 380V hom, vim tias qhov hluav taws xob no muaj kev phom sij ntau dua rau cov ntsuas (tsawg kawg CAT III 600V lossis ntau dua multimeter) thiab siv cov neeg xav tau), vim li cas kev nyab xeeb, nws raug nquahu kom ntsuas thawj qhov ntsuas hluav taws xob me me, xws li AC adapter, thiab tom qab ntawd ntsuas qhov hluav taws xob ntawm lub qhov (socket) hauv tsev, kev ruaj ntseg tshwj xeeb! Thov xa mus rau phau ntawv qhia khoom kom paub meej txog txoj kev ua haujlwm.
Yuav txiav txim li cas cov iav tiv thaiv (OHM Ω) zoo lossis phem?
A: Nco ntsoov tias, thov tsis txhob siv cov ntaub ntawv tiv thaiv los ntsuas qhov hluav taws xob, ntsuas hauv online, cov khoom siv yuav tsum raug kaw, muaj cov capacitors lossis roj teeb hauv kab, nws yuav tsum tau muab tso tawm tag nrho, ua ntej koj tuaj yeem ntsuas. Qhov no yog qhov kev ntsuam xyuas zoo dua, feem ntau koom nrog kev saib xyuas hluav taws xob, muaj qee qhov kev tiv thaiv ntawm tes, kev ntsuas ncaj qha ntawm kev tiv thaiv tuaj yeem ua tau.
Yuav ua li cas txiav txim siab qhov zoo lossis qhov tsis zoo ntawm DC tam sim no iav (DCA)?
A: Yog tias muaj qhov paub tam sim no, ncaj qha rau hauv cov ntaub ntawv tam sim no, yog tias tsis yog, nws tsis muaj teeb meem, casually nyob rau hauv cov ntaub ntawv tam sim no input voltage tuaj yeem ua tau, yog tias tawm ntawm 1, mus rau qhov qis qis los hu rau lub iav, kom txog thaum tus nqi zoo tshwm, thov nco ntsoov cov ntsiab lus hauv qab no:
A, thov tsis txhob nkag siab dhau qhov voltage, kom tsis txhob tam sim no loj dhau, thiab kev puas tsuaj rau lub ntsuas, feem ntau siv tuaj yeem yog cov khoom siv ntawm cov roj teeb zoo tib yam, xws li No. 5, No. 7 thiab lwm yam;
B, nyob rau hauv lub input voltage kom pom qhov ntsuas ntawm nws tam sim no, vim hais tias qhov ntsuas tsis kam (load) yog me me, cov tswv yim ntev dhau lawm, yog tias muaj kev puas tsuaj rau lub hauv paus, yog li ib qho kev tawm tswv yim sim tsis pub dhau 5 vib nas this;
C, txhua qhov siab thiab qis, qhov nyob ib sab, feem ntau 10 npaug ntawm kev sib raug zoo.
Yuav ua li cas txiav txim siab cov ntaub ntawv capacitance (CAP) zoo lossis phem?
A: Feem ntau pom qhov paub tus nqi ntawm qhov capacitance, ncaj qha tso rau hauv qhov ntsuas, qhov ntsuas qhov ntsuas yuav tsum yog 10 npaug tshaj qhov kev sib raug zoo; kev tshawb nrhiav yog qhov zoo tshaj plaws los siv cov khoom siv hlau zoo capacitors, nws lub peev xwm ruaj khov, siab precision. Nws tsis pom zoo kom siv electrolytic capacitor los kuaj, vim tias electrolytic capacitor stability thiab qhov tseeb tsis zoo.
Lub hauv paus ntsiab lus ua haujlwm ntawm digital multimeter yog dab tsi?
A: Lub hauv paus Circuit Court ntawm digital multimeter yog header circuit, qhov yooj yim kev ua nws ua tiav yog kom quantize lub input DC voltage (analog) thiab tso zis; lwm yam kev ua haujlwm feem ntau yuav tsum tau ua kom lub zog sab nraud. ps: nti ntawm multimeter niaj hnub no muaj ntau dua thiab ntau dua ntawm kev sib koom ua ke, thiab tsawg dua thiab tsawg dua peripheral circuits, uas yog qhov zoo thiab qhov tsis zoo. Qhov zoo: kev sib koom ua ke siab, yooj yim sab nraud circuitry, tivthaiv teeb meem zoo tshwm sim los ntawm kev ua tsis tau zoo yuav tsawg dua; qhov tsis zoo: nti tsis zoo, tus nqi hloov pauv siab thiab teeb meem, qee zaum hloov cov nyiaj nti, tuaj yeem yuav ib lub 'meter', yog li qhov tsis zoo yuav tsum tau muab pov tseg.
