Yuav kuaj li cas yog tias tus tester tau tawg thiab cov xaim yog sim?
Lub sab hauv ntawm ib lub tshuab hluav taws xob feem ntau yog tsim cov kev tiv taus siab tiv taus, cov hlab ntsha neon, thiab springs. Qhov tsis kam ntawm qhov kev tiv thaiv siab yog feem ntau hauv cov raj hauv cov dej ntws tam sim no thiab tiv thaiv cov neeg nuv ntses loj thiab tib neeg lub cev thaum sim. The possibility of damage to the resistor is very small, but if there is poor contact between the resistor and the neon tube or spring, and the fault is unknown, using this electric pen to measure whether the charged body has AC high voltage, the neon tube will not light up (or the brightness is weak), which may cause misjudgment and result in electric shock to the user. Tsis tas li ntawd, yog tias dej ua rau nkag rau sab hauv tus cwj mem thiab sab hauv yog noo ntawm cov ac220v ntsuas ntsuas hluav taws xob ntxiv. Yog li ntawd, ua ntej siv cov cwj mem cwj mem, qhov zoo ntawm cov cwj mem xaim mem yuav tsum tau kuaj xyuas kom paub meej tias tsis muaj kev ua txhaum ua ntej siv.
Thaum siv cov digital mottimeter tsis siv cov ntsuas ntsuas ntsuas rau cov xov tooj nruab nrab thiab nyob twj ywm, cov xov dej tau tuaj yeem hloov kho rau AC 2 {}} 0v voltage. Qhov kev sojntsuam dub yuav tsum muaj kev sib cuag nrog hauv av lossis phab ntsa, thiab cov kev sojntsuam liab yuav tsum muaj kev sib cuag nrog ob cov xaim feem ntau. Yog tias cov kev sojntsuam liab yog nyob rau hauv kev sib cuag nrog lub xaim nruab nrab, tus qauv hluav taws xob tso rau ntawm cov multimeter yog qhov tsawg heev, ze rau 0 volts. Yog tias qhov kev sojntsuam liab yog nyob rau hauv kev sib cuag nrog cov hlau nyob, tus qauv hluav taws xob tso rau ntawm cov multimeter yog feem ntau ib sab tens ntawm volts. Siv cov qauv no los ntsuas AC qhov hluav taws xob siab yog muaj kev nyab xeeb dua li siv tus cwj mem ntsuas, vim tias tam sim no ntws los ntawm tib neeg lub cev.
① Txaus ntshai heev!
Txawm li cas los xij, kev phom sij tsis tshwm sim thaum ntsuas cov hlau nyob nrog kev ntsuas cwj mem. Cov dej tsis kam siv hauv kev ntsuas cov cwj mem yog cov khoom siv hluavtaws ruaj khov, tseem tau muab faib ua ob pawg: kuj tau muab faib ua cov khoom siv hluav taws xob thiab cov khoom siv hluavtaws hauv hluav taws xob. Hom kev tiv thaiv no tau ua los ntawm kev sib xyaw ua ke thiab nias peb cov tshuaj: cov khoom siv cov khoom siv granular, cov khoom siv tsis yog muab cov tub lim, thiab cov nplaum. Cov khoom siv ua tau zoo sib xws muaj cov pa roj carbon dub thiab graphite; Tsis yog hmoov cov khoom noj muaj xws li Mica hmoov, quartz hmoov, iav hmoov, titanium dioxide hmoov (titanium dioxide hmoov), thiab lwm yam; Qee cov nplaum nplaum siv cov nplaum nplaum, thaum lwm tus siv cov nplaum nplaum hauv Inorganic. Ob pawg ntawm cov organic khoom cov tub ntxhais tsim nyog thiab inorganic cov tub ntxhais tsis kam tau hais ua ntej tau txawv ntawm hom nplaum. Hom kev tiv thaiv no muaj cov muaj zog tshaj tawm, muaj kev ntseeg siab, thiab tsis yooj yim. Yog tias nws raug puas tsuaj, nws tseem yuav qhia lub xeev ncig qhib lub xeev, uas txhais tau tias Neon Tube tsis puas lawm tab sis tsis muaj teeb liab
Kev phom sij ntawm hluav taws xob kev poob siab tshwm sim thaum muaj hluav taws xob ntawm cov xaim hlau nyob, tab sis cov resistor ntawm kev ntsuas tus cwj mem yog tsis muaj hluav taws xob. Nws yog ib qho yooj yim rau cov neeg kom kov tau cov hlau nyob thiab tau txais hluav taws xob!
Yog tias qhov tsis kam ntawm kev ntsuas tus cwj mem (feem ntau yog cov khoom siv tawm tsam nrog tus nqi tiv taus ntawm ob peb metres) tau tawg ua ob qho xwm txheej:
Ib qho yog disconection (uas yog ib txwm muaj). Tom qab lub resistor yog disconnected, ntsuas ntsuas hluav taws xob tau txiav tawm, thiab neon teeb
Qhov thib ob yog qhov tsis tshua muaj Circuit Court (uas yog tsis tshua muaj), uas neon tub raj ntawm kev ntsuas tus cwj mem tawg tag nrho (cov khoom ua haujlwm ib txwm muaj ntawm Neon Npuas yog 70V). Nyob rau lub sijhawm no, tus tub ntxaum ua si ntawm lub luag haujlwm nyab xeeb thiab yuav tsis ua kom raug mob rau tib neeg.
[Nco tseg] Qhov voltage ntawm kev sim ntsuas hluav taws xob yog feem ntau 220V
