Dab tsi yuav yog vim li cas thiaj li ua rau tawg tsis kam ntawm cov neeg kho tshuab tshuaj loj?
Yog tias cov kev tiv thaiv ntau ntau ntau ntawm cov neeg kho tshuab ushing, piv txwv li lub pointer multimeter, puas tau kuaj xyuas ib txwm, nws qhia tau tias lub taub hau ntsuas yuav tsum tsis cuam tshuam. Raws li kev xeem cov ntsiab cai ntawm kev sib tw ntawm ntau yam, nws yog feem ntau uas cov kev tiv thaiv tsis kam hlawv lossis cov nqi tiv thaiv tau hloov pauv. Qhov feem ntau yuav ua rau muaj kev puas tsuaj rau cov kev tiv thaiv ntau yam ntawm cov neeg kho tshuab kom siv ntau yam raws li kev tiv thaiv ntau npaum li qhov hluav taws xob ntau. Yog li, ua ntej txhua xeem, nws yog ib qho tseem ceeb kom tau siv los kuaj seb lub iav raug xaiv tau raug thiab tsim kev ntsuas zoo.
Cov iav tsis tawm ntawm tus pointer mulver motimeter yog tawg, tab sis lwm lub zog tuaj yeem siv, qhia tias lub taub hau ntsuas yog qhov zoo. Qhov no yog tshwm sim los ntawm kev siv tsis raug. Muaj ob qho laj thawj rau qhov no. Ib qho yog ntsuas ntau me me tiv thaiv hlau cov kab hlau ua kom tsis muaj hluav taws xob ntau heev, thiab tsis muaj peev xwm ua tau los ntawm DC tam sim no. 54 ω, thiab 540 ω, ntsig txog). Tab sis yog hais tias lub multimeter hais tsuas yog muaj teeb meem nrog iav tsis kam, ces tsis tas yuav muaj teeb meem tshwm sim hauv lub iav no.
① MF {{{{0} High} Tam sim no siv tau cov hom tshiab (DCA), nrog rau tag nrho ntawm {}.
② Nws muaj yim feem ntau siv zog rau kev ncaj qha voltage (dcv) thiab ib qho kev nthuav dav dc25 {0 v. 0 ~ 0.25V ~ 1v ~ 1V ~ 2.5V ~ 10V ~ 50V ~ 500V ~ 1000V ~ 2500V.
Muaj rau theem ntawm cov hluav taws xob tshiab (ACV), xws li {{~ 50v ~ 250v ~ 2500v ~ 2500.
Nws muaj tsib qhov tsis kam nce qib (ω). R × 1 ω r × 10 ω r × 10 ω r × 1K ω R € 10K ω Kuj tseem muaj nqi ntawm txoj kab yog nruab nrab ntawm {, lub buzzer yuav emit lub suab nrov). Vim yog qhov chaw txwv, kev ua haujlwm xws li Transistor DC Amplared Chaw Taws Teeb Kev Tswj Xa Khoom Txuas, thiab qib audio DB raug rho tawm.
Firstly, thaum ntsuas cov kev tiv thaiv ntau, cov kev sojntsuam dub yog ntxig rau hauv lub ntsuas → lub sij hawm tsis zoo ntawm lub 20.2 ω resistor, thiab 2430 ω resistor, tag nrho cov uas yog nyob rau hauv parallel nrog lub ntsuas dej. Nyob rau lub sijhawm no, qhov kev sojntsuam liab yog ntxig rau hauv kaum lub zog ntawm kev hloov kho, ib qho roj teeb kom tau, thiab cov roj ntsha uas tau sib txawv, thiab cov ncej zoo dua + ntawm lub taub hau. Thaum koj nkag siab txog lub voj kaw, nws yooj yim los tuav. Raws li kev paub ntawm tus kheej, koj tuaj yeem tshawb rau nws los ntawm kev ua raws li cov lus qhia.
