Yuav ua li cas siv multimeter los kuaj seb AC contactor coil yog qhov zoo lossis tsis zoo?
Koj tuaj yeem txiav txim siab seb tus contactor coil puas zoo lossis tsis yog los ntawm kev ntsuas tus nqi tiv thaiv nrog multimeter. Feem ntau, lub coil qauv ntawm tus contactor yog ob peb puas ohms. Yog tias cov ntaub so ntswg koj ntsuas me me (xws li ob peb ohms, thiab nws tsis rub tom qab lub hwj chim), nws txhais tau hais tias lub kauj yog luv luv. ; yog tias cov ntaub so ntswg loj heev (xws li infinite) ces lub kauj tawg.
Tsis tas li ntawd, xyuas cov kauj hluav taws xob ntawm lub contactor kom tiv thaiv lub kauj los ntawm kev tsis raug rub los ntawm cov ntsia hlau tsis ruaj, lossis lub contactor tsis rub tawm vim yog qhib Circuit Court ntawm cov hlau nkag mus rau hauv contactor coil.
Siv lub tshuab hluav taws xob digital los ntsuas lub kauj nrog lub ohm ntau hauv qab 2K kom pom tias lub kauj yog qhib circuited. Yog tias lub Circuit Court qhib, nws ua pov thawj tias lub kauj tawg.
Siv lub multimeter nrog ohm ntau 200 los ntsuas ib txwm kaw thiab ib txwm qhib (los ntsuas ib txwm qhib, tuav nws nrog koj txhais tes lossis ua kom muaj zog). Nws qhia tias kev sib cuag tsis zoo. Yog hais tias qhov kev sib txuas lus txuas nrog rau kev thauj khoom, qhov voltage yuav tsis ncav cuag qhov ntsuas hluav taws xob thaum ntsuas qhov voltage.
Siv lub multimeter los ntsuas qhov ib txwm qhib thiab kaw cov terminals kom pom tias lawv zoo li qub. Nws tsis yog yooj yim los ntsuas lub kauj nrog lub multimeter. Txoj hauv kev zoo tshaj plaws yog ncaj qha ntxiv qhov ntsuas hluav taws xob los ntsuas kev ua haujlwm.
Dab tsi yog qhov teeb meem nrog multimeter displaying U38 ntawm tej ntaub ntawv?
Cov multimeter digital qhia U38 hauv txhua lub zog. Tej zaum nws yuav yog tias kuv hu lub iav tsis raug thaum siv thiab hlawv tawm ib qho-chip A / D converter hauv digital multimeter.
Rau qhov zoo tib yam 3.1/2 digital multimeters, ib qho-chip A / D converter yog lub plawv ntawm digital multimeter. Vim yog tus nqi qis ntawm hom digital multimeter, ICL7106 nti feem ntau yog siv rau cov qauv ua haujlwm tso zis.
Thaum qhov no tshwm sim rau digital multimeter, nws tuaj yeem hais tau tias yuav tsum tau muab pov tseg, uas yog, yuav tsum tau kho, thiab kho tus nqi ntau dua li ntawm kev yuav ib qho tshiab digital multimeter. Yog li ntawd, thaum siv ntau yam multimeters, koj yuav tsum tau ceev faj txog cov iav thiab ntau yam ntawm lub multimeter, ua tib zoo saib xyuas, thiab xyuam xim rau cov dej-pov thawj ntawm lub 'meter'.
Txawm hais tias nws tau hlawv tawm, los yog cov khoom xauv npo tau raug nias. Tom qab qhib lub hwj chim, yog tias muaj ob lub khawm ntawm lub moos, nias txhua lub pob thiab xyuas dua.
