Muaj tseeb! AC meters yog cov cuab yeej siv los ntsuas ntau yam ntawm alternating tam sim no (AC) hauv cov tshuab hluav taws xob. Muaj ntau ntau hom AC meters tsim rau ntau lub hom phiaj.
Cov ntsuas hluav taws xob siv hluav taws xob siv cov kev sib cuam tshuam ntawm cov hlau nplaum uas tsim los ntawm cov khoom nqa tam sim no. Lawv muaj cov khoom ruaj khov thiab txav tau yooj yim tau teeb tsa hauv txoj hauv kev uas thaum AC tam sim no dhau los ntawm lawv, electromagnetic rog raug tsim, ua rau deflection ntawm tus taw tes ntawm qhov ntsuas ntsuas. Cov ntsuas no yog qhov tseeb heev thiab tuaj yeem ntsuas qhov voltage thiab tam sim no hauv AC circuits. Lawv feem ntau siv nyob rau hauv lub chaw soj nstuam thiab kev ntsuas qhov tseeb vim lawv qhov tseeb.
Tsiv hlau meters khiav hauj lwm ntawm lub hauv paus ntsiab lus ntawm kev sib cuam tshuam ntawm ib tug ruaj coil thiab ib tug movable daim hlau. Thaum AC tam sim no ntws los ntawm lub kauj, nws tsim ib qho chaw sib nqus uas nyiam los yog tawm tsam cov hlau, uas ua rau nws txav mus. Qhov kev txav mus los yog hloov mus rau lub pointer mechanism, qhia tus nqi ntawm qhov ntsuas ntsuas. Cov ntsuas no kuj pheej yig, rugged, thiab feem ntau siv los ntsuas qhov hloov pauv tam sim no hauv cov khoom siv hauv tsev, cov khoom siv me me, thiab kev siv dav dav.
Electrostatic meters ua haujlwm raws li lub hauv paus ntsiab lus ntawm lub zog electrostatic ntawm cov ntawv them nyiaj. Lawv muaj cov phaj ruaj khov thiab txav tau sib cais los ntawm qhov sib txawv me me. Thaum siv AC voltage, lub phaj txav tau ntsib lub zog vim qhov hloov hluav taws xob, ua rau nws txav mus. Qhov kev txav yog ces hloov mus rau hauv tus nqi nyeem tau ntawm qhov ntsuas. Cov ntsuas hluav taws xob hluav taws xob yog siv los ntsuas cov hluav taws xob siab thiab cov khoom siv hluav taws xob hauv cov ntawv thov AC high-frequency, xws li xov tooj cua zaus (RF) circuits thiab cov khoom siv tshwj xeeb.
AC meters ua lub luag haujlwm tseem ceeb hauv cov tshuab hluav taws xob, pab saib xyuas, tswj, thiab tswj cov dej ntws ntawm cov khoom siv tam sim no. Lawv tuaj nyob rau hauv ntau yam designs, xws li analog mus rau digital meters, muab txawv qhov tseeb, ntau yam, thiab nta haum rau tej daim ntawv thov.
Tsis tas li ntawd, kev txhim kho thev naus laus zis tau coj mus rau kev txhim kho digital AC meters nruab nrog microprocessors, muab kev txhim kho qhov tseeb, cov lus qhia digital, cov ntaub ntawv muaj peev xwm nkag tau, thiab ua tau zoo nrog cov kev tswj xyuas niaj hnub no. Cov ntsuas digital no muab ntau dua qhov tseeb thiab feem ntau muaj cov yam ntxwv ntxiv xws li kev ntsuas kev sib haum xeeb thiab kev ntsuas lub zog, ua rau lawv tsim nyog rau kev lag luam thiab kev lag luam.
Kev xaiv ntawm AC 'meter' nyob ntawm cov yam xws li qhov yuav tsum tau muaj, qhov ntau zaus, ib puag ncig, thiab qhov tshwj xeeb yuav tsum tau ntsuas. Tsis tu ncua calibration thiab txij nkawm yog qhov tseem ceeb los xyuas kom meej qhov tseeb thiab kev ntseeg siab ntawm AC meters hauv ntau lub tshuab hluav taws xob.