Yuav ua li cas siv ib tug multimeter los ntsuas qhov voltage ntawm AC contactor A1 thiab A2 nyob rau hauv lub hwj chim-on lub xeev
Siv lub multimeter nrog AC voltage ntawm 500 volts los txuas ncaj qha rau A1 thiab A2
Xaiv lub 750V iav ntawm multimeter AC voltage, saib ntawm txoj hauj lwm ntawm lub jack, muab cov xim dub thiab xim dub coj mus rau hauv com. liab test lead rau hauv V jack, muab cov xim liab thiab dub coj mus kuaj ntawm ob qho kawg ntawm A1A2, thiab ntsuas tus nqi hluav taws xob
Tig lub multimeter mus rau lub iav siab tshaj plaws thiab qis dua nws raws li cov zaub! Yog tias hom pointer yuav tsum tau ua, tus pointer yuav tsum nyob rau hauv nruab nrab txoj hauj lwm, xws li lub tshuab hluav taws xob digital saib, lub hom phiaj yog los txo qhov kev ntsuas qhov yuam kev, thiab kuj txo cov iav kom zoo!
Siv multimeter los ntsuas cov ntaub ntawv AC voltage, 250v cov ntaub ntawv (thaum kwv yees qhov hluav taws xob yog 220v) lossis 500v cov ntaub ntawv (thaum kwv yees qhov hluav taws xob yog 380v). Txuas ob qhov kev xeem coj mus rau A1A2 kom pom kev nyeem ntawv.
Nws yog qhov yooj yim heev uas koj tuaj yeem tham txog qhov teeb meem yam tsis tau xav, ua ntej siv Ac high-level ntsuas kom pom tias qhov tshwm sim tus nqi tsis zoo lossis tsis ncaj ncees lawm, thiab tom qab ntawd siv Dc ntsuas qib siab.
Ncaj nraim siv lub tshuab ntsuas ntau los teeb tsa 600V qhov hluav taws xob ntau, thiab siv tus cwj mem los ntsuas nws. Tsis muaj qhov zoo thiab qhov tsis zoo hauv AC fais fab mov, thiab tus cwj mem ntsuas ntsuas A1 thiab A2. Nws yog tseeb ntawm ib nrais muag seb puas muaj hwj chim los tsis muaj.
Ua ntej txiav txim siab qhov paub qhov voltage ntawm lub davhlau ya nyob twg yuav tsum tau kuaj. Feem ntau ntawm lub Hoobkas hluav taws xob tsawg dua lossis sib npaug ntawm 380V AC, thiab kev siv pej xeem yog 220V AC. Teem lub multimeter rau AC 500V thiab ntsuas nws ncaj qha!
Dab tsi yog qhov laj thawj ntawm kev siv lub tshuab ntsuas ntau los ntsuas qhov ohm ntau ntawm cov khoom siv hauv tsev, qee qhov txuas thiab qee qhov tsis yog?
Siv ib lub multimeter los ntsuas qhov tsis kam ntawm ob qho kawg ntawm cov hluav taws xob ntsaws hauv koj lub tsev yog qhov sib txawv.
Yog tias koj ntsuas lub hwj los yog lub hwj hluav taws xob, lossis lub rooj teeb uas siv lub teeb ci tseem ceeb, thaum lub qhov hluav taws xob qhib, qhov kev tawm tsam ntawm ob qho kawg ntawm lub ntsuas ntsaws yuav tsum yog li 100 ohms. Thaum ntsuas ob qhov kawg ntawm cov plugs ntawm TVs, tub yees, tshuab ntxhua khaub ncaws, thiab lwm yam., qhov kev tiv thaiv qhov tseem ceeb yog qhov sib txawv, vim hais tias cov plugs ntawm txhua lub tshuab hluav taws xob sib txawv ntawm lawv cov hluav taws xob hauv hluav taws xob, thiab cov khoom siv hluav taws xob sib txawv.
Tom qab tus kheej tau ntsib lub tshuab ntxhua khaub ncaws thaum lub tshuab hloov pauv, qhov kev tiv thaiv ntsuas ntawm ob qhov kawg ntawm lub ntsaws yog li 200 ohms rau lub cev muaj zog hauv lub tshuab ntxhua khaub ncaws.
Qee cov khoom siv hauv tsev xws li LCD TVs thiab cov tub yees muaj cov nqi tiv thaiv ze rau qhov tsis muaj hnub kawg hauv kev siv ib txwm.
Raws li cov saum toj no, siv ib tug multimeter los ntsuas lub on-off ntawm hluav taws xob plug los txiav txim seb cov khoom siv hluav taws xob zoo los yog phem tsis haum rau tag nrho cov khoom siv hluav taws xob, thiab multimeter tsis yog ib tug panacea. Tsuas yog tsim nyog rau qee yam khoom siv hluav taws xob, xws li hluav taws xob hluav taws xob, hluav taws xob, hluav taws xob, hluav taws xob, hluav taws xob soldering irons, lub cev muaj zog coils, incandescent teeb, thiab lwm yam.
Ua ntej ntsuas cov khoom siv hauv tsev, koj yuav tsum nkag siab txog daim duab kos duab ntawm cov khoom siv, tshwj xeeb tshaj yog cov khoom siv hluav taws xob. Qee tus taw tes yuav hloov pauv thaum siv lub tshuab hluav taws xob ntau rau kev hloov pauv cov kauj ruam-down rectification, thiab qee qhov siv cov hloov hluav taws xob los yog lwm lub voj voog, thiab tus taw tes yuav tsis tas hloov. Tsis tas li ntawd, lub Circuit Court breaker multimeter yuav tsis muaj qhov taw qhia. Yog li ntawd, ua ntej ntsuas, sib piv cov duab kos lossis qhib cov khoom siv hluav taws xob los xyuas cov qauv hauv Circuit Court, kom tsis txhob muaj kev txiav txim siab.
Txoj kev siv hluav taws xob ntawm ntau yam khoom siv hauv tsev sib txawv, thiab lub zog kuj sib txawv, yog li qhov ntsuas qhov ntsuas kuj sib txawv. Yog tias nws yog lub zog hloov hluav taws xob, nws muaj kev tiv thaiv diode pib sab hauv, yog li qhov ntsuas tsis tuaj yeem ntsuas.
UC3846 tswj nti ua haujlwm txoj cai tswj daim duab Inverter vuam tshuab txoj cai thiab daim ntawv thov
