Dab tsi ua haujlwm feem ntau yog nruab rau ntawm digital multimeters?
Muaj ntau cov qauv thiab hom digital multimeters, thiab cov khoom ntsuas thiab kev ua haujlwm ntawm cov qauv sib txawv thiab hom digital multimeters kuj txawv. Piv txwv li, qee qhov digital multimeters siv ib qho kev hloov pauv los xaiv cov khoom ntsuas thiab ntsuas qhov ntsuas, thaum lwm tus siv ob lub keyboards xaiv cov khoom ntsuas thiab ntsuas qhov sib txawv (cov khoom ntsuas ntsuas feem ntau yog khawm hom).
Feem ntau, cov cim rau txhua qhov kev ntsuas yog cim rau ntawm lub xov tooj: DCV (DC voltage) hom, ACV (AC voltage) hom, DCA (DC tam sim no) hom, ACA AC tam sim no hom, Ω lossis OHM lossis Oh hom, H Ω siab thaiv, L Ω av thaiv, LO Ω, LOW Ω lossis OHM LOV hom kev siv hluav taws xob tsawg, hom kev thaiv hluav taws xob, hom capacitor, zaus hom, hom kub, thiab lwm yam.
Digital multimeters feem ntau muaj cov haujlwm no:
Ua ntej, cov multimeter digital muaj kev ua haujlwm ntawm kev hloov pauv tsis siv neeg xoom, tab sis tsuas yog rau hom capacitor, qhov no tuaj yeem ua kom ntseeg tau tias cov zis ntawm multimeter kuj yog xoom thaum muaj xoom tawm tswv yim;
Qhov thib ob, nws tuaj yeem hloov pauv thiab tso saib polarity, uas yog, thaum lub polarity ntawm qhov ntsuas qhov ntsuas hluav taws xob lossis qhov tam sim no tsis sib haum nrog lub polarity ntawm kev sojntsuam, lub ntsuas tuaj yeem tso tawm cov cim tsis zoo, thaum lub pointer multimeter xav tau pauv qhov kev sojntsuam. Rau qhov tsis siv neeg hloov pauv digital multimeters, lawv tuaj yeem tso saib ntau dhau thaum overloaded (feem ntau pom "1" lossis "-1", cov cim tsis zoo nyob ntawm qhov polarity ntawm cov cuab yeej tawm tswv yim);
Thib peb, thaum lub roj teeb hluav taws xob tsawg dhau thiab ua rau lub zog tsis txaus, lub ntsuas hluav taws xob tuaj yeem ua kom sai los ntawm kev qhia cov cim tshwj xeeb (xws li "LOBATT", "-", thiab lwm yam). Tsis tas li ntawd, qee qhov digital multimeters tuaj yeem tso saib cov ntsuas ntsuas thiab cov cim (xws li "mA", "K Ω", thiab lwm yam).
Cov duab digital ntawm lub tshuab hluav taws xob digital tso cai rau kev nyeem ntawv nrawm dua thiab muaj tseeb dua ntawm kev ntsuas cov txiaj ntsig, yog li zam kev nyeem tib neeg kev ua yuam kev thiab txo qhov pom kev qaug zog rau cov neeg siv.
Qhov zoo ntawm digital multimeter kuj tau pom hauv nws qhov loj me thiab lub teeb yuag. Vim yog siv cov kev sib txuas loj loj thiab cov khoom siv hluav taws xob qis hauv lub ntsuas, qhov hnyav ntawm qhov ntsuas feem ntau tsis tshaj 300g. Nws qhov loj me me tso cai rau nws yuav luag ntim rau hauv hnab ris, uas ua rau muaj kev yooj yim zoo rau cov neeg ua haujlwm uas nquag tawm mus rau kev pabcuam tu.
