Tsib nqe lus nug txog Multimeters teb
1. Yuav txiav txim siab li cas (nrhiav) AC voltage range (ACV) ntawm multimeter yog qhov zoo?
Teb: Cov khoom siv hauv tsev muaj xws li AC adapters, cov khoom siv hauv tsev (ob-theem 220V, nws yog qhov zoo tshaj plaws tsis ntsuas peb-theem 380V, vim tias qhov hluav taws xob no muaj kev phom sij ntau dua, thiab nws muaj kev phom sij rau lub ntsuas ntsuas (tsawg kawg yog ib qho multimeter saum CAT III. 600V) thiab cov neeg siv muaj cov kev xav tau siab dua), rau qhov kev nyab xeeb, nws raug nquahu kom ntsuas qhov hluav taws xob me me ua ntej, xws li AC adapter, thiab tom qab ntawd ntsuas qhov hluav taws xob ntawm lub qhov hluav taws xob hauv tsev. Rau cov txheej txheem kev nyab xeeb tshwj xeeb, thov xa mus rau phau ntawv qhia khoom.
2. Yuav ua li cas txiav txim seb cov ntaub ntawv tiv thaiv (OHM Ω) yog qhov zoo lossis qhov phem?
Teb: Nco ntsoov, thov tsis txhob siv cov iav tiv thaiv los ntsuas qhov voltage. Thaum ntsuas hauv online, cov cuab yeej siv yuav tsum raug kaw, thiab cov kab nrog capacitors lossis roj teeb yuav tsum tau muab tso tawm tag nrho ua ntej ntsuas. Qhov no yooj yim dua los txheeb xyuas, feem ntau koom nrog kev saib xyuas hluav taws xob, muaj qee qhov kev tiv thaiv ntawm tes, tsuas yog ntsuas tus nqi tiv thaiv ncaj qha.
3. Yuav ua li cas txiav txim seb DC tam sim no cov ntaub ntawv (DCA) zoo los tsis?
Teb: Yog tias muaj qhov paub tam sim no, nkag ncaj qha rau hauv qhov tam sim no. Yog tsis yog, tsis muaj teeb meem. Tsuas yog input qhov voltage nyob rau hauv lub tam sim no ntau yam. tus nqi, thov nco ntsoov cov hauv qab no:
A. Thov tsis txhob muab cov khoom siv hluav taws xob ntau dhau, thiaj li tsis ua rau lub ntsuas hluav taws xob puas vim yog qhov tam sim no ntau dhau. Cov khoom siv uas tuaj yeem nkag tau yog cov roj teeb zoo tib yam, xws li No.5 thiab No.7;
B. Thaum ntsuas qhov tam sim no ntawm qhov input voltage, vim qhov tsis kam (load) ntawm qhov ntsuas sab hauv ntawm qhov ntsuas me me, yog tias cov tswv yim ntev dhau lawm, qhov chaw yuav raug puas tsuaj, yog li sim tsis pub dhau 5 vib nas this rau ib qho ib qho kev tawm tswv yim;
C. Txhua qhov siab thiab qis, thiab qhov chaw nyob ib sab, feem ntau muaj kev sib raug zoo ntawm 10 zaug.
4. Yuav ua li cas txiav txim seb cov ntaub ntawv capacitor (CAP) puas zoo lossis phem?
Teb: Feem ntau, nws yog nrhiav lub capacitor nrog tus nqi paub thiab ntxig nws ncaj qha rau kev ntsuas. Tus nqi tso tawm ntawm txhua qhov yuav tsum yog nyob rau hauv ib qho 10-fold piv; Nws yog qhov zoo tshaj plaws los siv cov hlau capacitor zoo rau kev tshawb nrhiav, uas muaj peev xwm ruaj khov thiab siab precision. Nws tsis pom zoo kom siv electrolytic capacitors rau kev tshuaj xyuas, vim tias qhov ruaj khov thiab qhov tseeb ntawm electrolytic capacitors tsis zoo.
5. Lub hauv paus ntsiab lus ua haujlwm ntawm digital multimeter yog dab tsi?
Teb: Lub hauv paus Circuit Court ntawm digital multimeter yog ib lub meter circuit. Lub luag haujlwm tseem ceeb uas nws ua tiav yog kom muaj nuj nqis ntawm DC input voltage (analog kom muaj nuj nqis) thiab tso tawm; lwm txoj haujlwm feem ntau yuav tsum tau txuas ntxiv rau sab nraud. PS: Tam sim no lub nti ntawm lub multimeter yog ntau thiab ntau kev sib xyaw, thiab lub peripheral Circuit Court yog tsawg thiab tsawg, uas muaj qhov zoo thiab qhov tsis zoo. Qhov zoo: kev sib koom ua ke siab, yooj yim sab nraud Circuit Court, thiab tsawg dua qhov tsis zoo los ntawm cov teeb meem zoo; Qhov tsis zoo: thaum lub nti tawg, tus nqi hloov pauv yog siab thiab teeb meem, thiab qee zaum cov nyiaj los hloov lub nti tuaj yeem yuav lwm yam cuab yeej, yog li Feem ntau, yog tias nws tawg, nws yuav tsum tau muab pov tseg.
