Kuv yuav ua li cas yog tias 12V relay tsis koom tab sis lub kauj muaj zog?

Koj tau lees tias koj 12V relay lub kauj tau txais lub zog. Tab sis lub Circuit Court nws yuav tsum hloov nyob twj ywm tuag. Qhov no yog ib qho teeb meem uas tuaj yeem nres koj qhov project txias. Koj tuaj yeem hnov ​​​​cov teeb liab tswj sim ua haujlwm, tab sis tsis muaj dab tsi tshwm sim ntawm qhov tso zis.

Kuv yuav ua li cas yog tias 12V relay tsis koom tab sis lub kauj muaj zog? Qhov xwm txheej no faib ua ob txoj hauv kev. Kev nkag siab txog txoj hauv kev uas koj nyob hauv yog qhov tseem ceeb rau kev kuaj mob sai thiab raug. Peb yuav qhia koj txog kev txheeb xyuas txoj hauv kev thiab daws qhov teeb meem.

Thawj txoj hauv kev yog Scenario A: Tsis muaj suab nyem los ntawm kev xa xov. Koj lub multimeter qhia tau hais tias qhov hluav taws xob ntawm lub kauj, tab sis lub hauv paus mechanism nyob twj ywm kiag li.

Txoj kev thib ob yog Scenario B: Koj hnov ​​​​ib nyem, tab sis tsis muaj hwj chim mus txog qhov tso zis tawm. Lub relay suab zoo li nws ua haujlwm, tab sis lub cuab yeej nws tswj tsis tau qhib.

Tsis muaj nias feem ntau txhais tau hais tias lub zog tsis zoo ncav cuag lub kauj lossis ua tiav kauj tsis ua tiav. Ib nias uas tsis muaj cov ntsiab lus tso tawm ncaj qha rau kev hloov pauv tsis tau nyob hauv lub relay.

Cov lus qhia no yuav kuaj xyuas ob qho xwm txheej. Koj yuav kawm:

Yuav ua li cas kom muaj kev nyab xeeb sim ib relay hauv -circuit thiab ntawm lub rooj ntev zaum

Qhia qhov txawv ntawm qhov tsis tshua muaj hluav taws xob thiab lub kauj tsis ua haujlwm

Yuav ua li cas kom paub meej tias kev sib cuag nrog tsis ua hauj lwm

Yog vim li cas relays tsis mechanically

Daim ntawv qhia meej meej los qhia koj qhov kev daws teeb meem txij thaum pib mus rau qhov kawg

Safety First & Toolkit

CEEB TOOM: Ua ntej kev kuaj xyuas hluav taws xob, koj yuav tsum ua qhov tseem ceeb ntawm kev nyab xeeb thiab kev tiv thaiv cov cuab yeej. Tsis quav ntsej cov txheej txheem kev nyab xeeb tuaj yeem ua rau raug mob lossis puas tsuaj rau cov khoom rhiab heev.

Ua raws li cov kauj ruam kev nyab xeeb no ua ntej kev sim. Cov no tsis yog cov lus qhia-lawv yog qhov yuav tsum tau ua kom muaj kev nyab xeeb.

Tshem tawm lub hwj chim loj. Hauv kev ua haujlwm hauv tsheb, qhov no txhais tau tias tshem tawm lub tsheb roj teeb lub davhlau ya nyob twg tsis zoo.

Hnav tsom iav kev nyab xeeb ib txwm. Cov nplaim hluav taws tsis xav txog lossis qhov tawg tuaj yeem tshwm sim.

Saib rau luv luv Circuit Court. Tsis txhob cia multimeter probes los yog jumper xov hlau kov cov hlau tsis xav tau qhov chaw lossis cov terminals.

Ua tib zoo tuav relays tom qab ua haujlwm. Ib qho hluav taws xob relay coil, tshwj xeeb tshaj yog ib qho yuam kev, tuaj yeem kub heev.

Koj xav tau cov cuab yeej tsim nyog rau cov kev xeem no. Kev kwv yees yuav tsis daws qhov no - ntsuas qhov tseeb yuav. Sau koj cov cuab yeej tseem ceeb ua ntej.

Digital Multimeter (DMM). Qhov no yog yuav tsum tau. Koj yuav xav tau nws rau qhov ntsuas voltage, tsis kam, thiab ntsuas txuas ntxiv.

Cov kab kos duab. Rau koj daim ntawv thov tshwj xeeb, txawm hais tias tsheb lossis kev cai Circuit Court, qhov tseeb schematics yog qhov tseem ceeb.

Jumper Hlau. Cov hlua khi nrog cov kab nuv ntses yog qhov tseem ceeb rau kev sim lub rooj zaum.

Basic Hand Tools. Koj yuav xav tau screwdrivers, socket sets, los yog pliers kom nkag tau thiab tshem tawm cov relay.

A12V Fais Fab Qhov Chaw. Rau kev ntsuas lub rooj zaum, siv lub npe hu ua - zoo 12V lub tsheb roj teeb lossis DC fais fab mov.

Txoj Kev 1: Tsis Muaj Suab Nyem

Tshooj lus no suav nrog thawj qhov xwm txheej loj: qhov hluav taws xob xa mus rau lub relay tswj Circuit Court, tab sis lub relay ua tsis muaj suab. Lub kauj yog energized, tab sis lub sab hauv hloov tsis txav. Qhov no taw tes rau peb qhov laj thawj tseem ceeb.

Peb yuav tshawb xyuas txhua qhov ua tau zoo. Peb pib nrog qhov feem ntau tshwm sim thiab txav mus rau qhov teeb meem hnyav dua. Txhua qhov kev sim ua rau qhov kawg, tsim kom muaj qhov kev kuaj pom tseeb.

Tsis txaus Pick{0}}Up Voltage

Ua ntej, nkag siab qhov sib txawv ntawm tus relay lub nominal voltage thiab xaiv -up voltage. Nominal voltage-12V ntawm no- yog qhov zoo tshaj plaws kev khiav hauj lwm voltage. Pick-up voltage yog qhov tsawg kawg nkaus uas xav tau los tsim kom muaj cov hlau nplaum txaus los rub lub cev thiab kaw cov kev sib cuag.

Raws li txoj cai, xaiv- nce voltage rau 12V relays feem ntau yog 70% txog 80% ntawm qhov ntsuas nominal. Qhov no txhais tau tias tsawg kawg yog 8.4V rau 9.6V yog xav tau rau kev koom tes txhim khu kev qha. Kev nyeem ntawv 12V ntawm kev sib txuas ntawm cov xaim hluav taws xob tuaj yeem ua yuam kev vim qhov poob qis.

Thaum lub relay coil txuas, nws loads tswj Circuit Court. Kev tiv thaiv siab nyob txhua qhov chaw hauv lub voj voog ntawd-los ntawm cov xaim corroded, xoob kev sib txuas, los yog cov neeg tsav tsheb tsis ua haujlwm- poob qhov hluav taws xob poob qis hauv kev thauj khoom. Tej zaum koj yuav pom 12V nrog relay tshem tawm, tab sis tsuas yog 7V thaum ntsaws rau hauv. Qhov ntawd tsis txaus los qhib nws.

Nov yog qhov kev ntsuam xyuas meej:

Cia lub relay txuas rau hauv nws lub qhov (socket).

Teem koj digital multimeter rau DC Volts

Nrhiav ob lub coil terminals ntawm lub relay. Nyob rau hauv tus qauv tsheb relays, cov no yog terminals 85 thiab 86

Ua tib zoo tso qhov kev sojntsuam liab rau ntawm lub davhlau ya nyob twg 86 (coil positive) thiab dub sojntsuam ntawm lub davhlau ya nyob twg 85 (coil av). Tej zaum koj yuav xav tau rov qab- sojntsuam kom nkag mus rau lub davhlau ya nyob twg thaum lub relay ntsaws

Ua kom lub zog tswj Circuit Court uas yuav tsum ua kom lub zog relay

Saib qhov kev nyeem ntawv voltage ntawm koj lub multimeter

Yog tias ntsuas voltage qis dua li 8.5V, koj pom koj qhov teeb meem. Qhov teeb meem tsis yog tus relay nws tus kheej, tab sis tswj Circuit Court pub rau nws. Tam sim no koj yuav tsum taug qab txoj hlua khi, tshawb xyuas qhov corrosion, thiab tshuaj xyuas lub zog los yog hloov cov khoom siv tswj lub relay.

Qhib lossis siab -Resistance Coil

Yog hais tias koj lub coil davhlau ya nyob twg voltage yog zoo (dhau 9.6V) tab sis lub relay tseem tsis nias, qhov teeb meem yuav nyob rau hauv lub relay lub kauj nws tus kheej. Lub kauj yog ntev heev, nyias hlau qhwv ib ncig ntawm ib tug hlau core. Yog hais tias cov hlau no tawg nyob qhov twg, nws tsim ib qho qhib Circuit Court.

Qhib Circuit Court txhais tau tias hluav taws xob ntws tsis tau. Tsis muaj magnetic teb tuaj yeem tsim. Tsis muaj magnetic teb txhais tau tias tsis muaj nias thiab tsis muaj kev hloov pauv. Peb tuaj yeem sim rau qhov kev so sab hauv no siv lub multimeter's resistance function.

Ua raws li cov kauj ruam no rau kev sim coil resistance:

Tshem tawm lub relay ntawm nws lub qhov (socket) los yog lub rooj tsav xwm Circuit Court

Teem koj cov multimeter rau qhov tsis kam (Ohms, Ω). Lub 200 lossis 2k Ohm ntau yam feem ntau ua haujlwm

Kov multimeter probes ua ke kom paub tseeb tias lawv nyeem ze zero Ohms

Muab multimeter sojntsuam hla lub relay lub coil terminals, 85 thiab 86. Polarity tsis muaj teeb meem rau qhov kev xeem no

Nyeem cov nqi tiv thaiv ntawm multimeter zaub

Noj qab nyob zoo 12V relay coils feem ntau muaj 50 txog 150 Ohms tsis kam. Tus nqi tseeb nyob ntawm tus qauv relay tshwj xeeb tab sis yuav ruaj khov nyob rau hauv qhov ntau.

Yog tias koj lub multimeter nyeem OL (Tshaj Limit), tsis kawg, lossis hloov pauv tus lej siab, nws lees paub tias cov hlau coil tawg sab hauv. Lub relay muaj qhov qhib coil thiab xav tau kev hloov pauv.

Yog hais tias lub multimeter nyeem zero ohms, qhov no qhia tau hais tias sab hauv coil luv Circuit Court. Thaum tsis tshua muaj, qhov no tseem tiv thaiv kev tsim cov hlau nplaum tsim nyog thiab yuav tsum tau hloov pauv.

Kev qaug dab peg heev

Yog tias coil voltage txaus thiab coil tsis kam yog qhov tseeb, tab sis tseem tsis tau nyem, peb sab laug nrog qhov tsawg kawg nkaus tab sis qhov tseeb tsis ua haujlwm: kev qaug dab peg hnyav.

Qhov no txhais tau hais tias tus relay qhov txav sab hauv -tshwj xeeb yog lub armature- yog lub cev jammed los yog khov. Tsis muaj qhov sib nqus quab yuam los ntawm lub kauj tuaj yeem txav tau lawv. Qhov no txawv ntawm cov neeg raug kaw, vim tias qhov kev txav tseem ceeb yog immobilized.

Qhov no tuaj yeem tshwm sim los ntawm cov khib nyiab sab hauv, yas vaj tse deformation los ntawm huab cua kub, lossis hnyav sab hauv corrosion fusing qhov chaw ua ke.

Ib qho yooj yim, tab sis tsis yog ib txwm ua tiav, kev sim tuaj yeem ua tau:

Tuav lub relay ntawm koj txhais tes

Muab nws ob peb lub kais dej rau koj lub xib teg lossis ntoo saum npoo

Sim ua kom lub zog ntawm relay dua ntawm lub rooj ntev zaum nrog koj lub zog 12V

Qee lub sij hawm lub cev poob siab tuaj yeem tshem tawm cov khib nyiab me me los yog tawg me me corrosion bonds, cia cov relay nyem dua. Txawm li cas los xij, txawm tias qhov no ua haujlwm, tsis txhob tso siab rau cov relay rau kev pabcuam txhim khu kev qha. Nws internal mechanism yog cuam tshuam.

Yog tias qhov ntsuas hluav taws xob thiab kev tiv thaiv dhau mus, kev qaug dab peg tsuas yog qhov kev kuaj mob xwb. Lub relay yog sab hauv puas thiab yuav tsum tau hloov.

Txoj Kev 2: Relay Clicks

Tam sim no peb tsiv mus rau txoj kev kuaj mob loj thib ob: koj tau hnov ​​​​txog relay nyem thaum lub zog siv rau lub kauj, tab sis tsis muaj hluav taws xob ncav cuag lub voj voog. Cov nias paub meej tias lub kauj yog qhov zoo, qhov hluav taws xob txaus, thiab lub armature yog lub cev txav mus los.

Lub suab "nias" yog lub armature tawm tsam cov tub ntxhais thaum nws txav cov kev sib cuag. Yog li ntawd, qhov teeb meem tsis yog nyob rau sab tswj (coil) ntawm relay - nws tag nrho ntawm sab load (hloov). Cov kev sib cuag tsis dhau hluav taws xob txawm tias lawv ua rau lub cev sib cuag.

Ntau hom kev ua tsis tau zoo tuaj yeem ua rau muaj cov tsos mob tshwj xeeb no. Peb tau teeb tsa lawv nyob rau hauv ib lub rooj los qhia meej txog qhov ua rau sib txawv.

Qhov Kev Xeem Txuas Txuas Ntxiv

Txhawm rau ua pov thawj kev sib cuag tau ua tsis tiav, peb yuav ua qhov kev sim txuas ntxiv. Qhov kev ntsuam xyuas no ncaj qha ntsuas kev tiv thaiv thoob plaws kev sib cuag thaum lub relay yog manually qhib rau ntawm lub rooj zaum xeem. Qhov no cais cov relay los ntawm lwm yam teeb meem uas tshwm sim hauv lub tsheb lossis hauv Circuit Court.

Qhov no yog qhov tseem ceeb tshaj plaws kev sim rau ib tug relay clicks tab sis tsis muaj hwj chim, relay coil energized tsis muaj teeb meem txuas ntxiv.

Tshem lub relay ntawm nws lub qhov (socket). Teem koj lub multimeter rau kev teeb tsa txuas ntxiv (nws yuav beep rau qhov tsis kam qis) lossis qis tshaj Ohms nplai

Ua ntej, sim qhov ib txwm kaw. Rau tus qauv 5-pin SPDT relay, tso multimeter probes ntawm lub davhlau ya nyob twg 30 (common input) thiab davhlau ya nyob twg 87a (ib txwm kaw cov zis). Tsis muaj lub zog rau kauj, koj yuav tsum pom ze-zero Ohms thiab hnov ​​​​ib lub suab nrov. Qhov no qhia tau tias txoj kev kaw ib txwm tsis zoo lawm

Tam sim no npaj koj lub rooj zaum xeem. Txuas koj 12V lub zog hluav taws xob (roj teeb lossis lub zog hluav taws xob) rau coil terminals, 85 (hauv av) thiab 86 (zoo). Tsis txhob ua qhov kev sib txuas zaum kawg

Muab multimeter probes hla lub davhlau ya nyob twg 30 (feem ntau) thiab lub davhlau ya nyob twg 87 (ib txwm qhib cov zis). Lub 'meter' yuav tsum nyeem OL, vim tias qhov hloov pauv tau qhib

Thaum tuav probes nyob rau hauv qhov chaw, txuas lub zog rau lub kauj. Koj yuav hnov ​​lub relay nyem

Saib qhov kev nyeem ntawv multimeter ntawm lub sijhawm tiag tiag lub relay clicks

Ib qho zoo, ua haujlwm relay tam sim ntawd yuav tshwm sim nyob ze -zero Ohms tsis kam (feem ntau tsawg dua 1 Ohm), thiab qhov txuas ntxiv beeper yuav suab. Qhov no qhia tau hais tias kev sib cuag tau kaw thiab ua kom huv si, kev sib txuas.

Yog hais tias koj relay clicks tab sis lub multimeter txuas ntxiv nyeem OL, siab heev tiv thaiv, los yog wildly fluctuating tus xov tooj, koj twb paub tseeb hais tias nyob rau hauv kev sib cuag tau ua tsis tau tejyam. Txoj kev hluav taws xob tau tawg txawm tias kev ua haujlwm txhua yam. Lub relay yog faulty thiab yuav tsum tau hloov.

Qhov Kev Sib Sib Nrauj Ua Tsis Tau

Kev nkag siab tias yog vim li cas tus relay ua tsis tau tejyam muab siab dua - qib kev txawj ntse. Nws tuaj yeem pab txiav txim siab yog tias tus relay tsuas hnav tawm lossis yog qhov teeb meem sab nraud Circuit Court ua rau tuag ntxov ntxov. Qhov kev paub no tiv thaiv tsuas yog hloov ib feem uas yuav ua tsis tau dua.

Tam sim no peb mam li tshawb txog lub hauv paus physics thiab cov ntaub ntawv tshawb fawb tom qab kev cuam tshuam tsis zoo. Peb txav dhau qhov kev txheeb xyuas yooj yim kom nkag siab tob txog cov hauv paus hauv paus.

Thaum tshav kub kub-Induced Deformation

Lub coil hlau nyob rau hauv ib tug relay cua nyob ib ncig ntawm ib tug yas spool hu ua ib tug bobbin. Lub rooj sib txoos armature zaum sab hauv los yog nyob ib sab ntawm no bobbin. Yog hais tias lub relay ntsib kub heev, cov yas bobbin no tuaj yeem warp lossis deform.

Cov cua kub no tuaj yeem los ntawm cov chaw sab nraud, xws li nyob ze rau ntawm lub cav manifold, lossis sab hauv. Ib qho dhau -voltage, qhov twg lub kauj tau txais ntau tshaj 12V, yuam nws kom dissipate lub zog tshaj li cua sov.

Thaum lub bobbin deforms, nws muaj peev xwm txwv lub armature txoj kev. Clearance nyob rau hauv ib tug relay ntsuas nyob rau hauv feem ntawm millimeters. Txawm tias me ntsis deformation tuaj yeem cuam tshuam lub armature, ua rau muaj kev qaug dab peg thiab "tsis muaj nyem" cov tsos mob.

Tsis txaus Magnetic Force

Qhov no yog qhov hloov maj mam ua rau "tsis muaj nyem" lossis qaug zog heev, tsis muaj kev ntseeg siab. Electromagnet lub zog nyob ntawm cov kauj tig thiab cov dej ntws los ntawm nws. Yog hais tias ob peb coil windings luv luv -circuit rau ib leeg, lub coil tag nrho tsis kam txo.

Raws li Ohm Txoj Cai, qhov kev tiv thaiv qis dua ua rau muaj kev kos tam sim no ntau dua. Txawm li cas los xij, qhov luv luv Circuit Court no kuj txo cov kev ua haujlwm zoo uas ua rau cov hlau nplaum sib nqus. Qhov tshwm sim yog qhov tsis muaj zog tag nrho cov magnetic teb, txawm tias tam sim no ntws ntau dua.

Xav txog magnetic teb raws li cov leeg. Ib feem luv luv Circuit Court yog zoo li kev raug mob ua rau cov leeg tsis muaj zog, txawm tias nws yuav nyuaj dua. Qhov chaw tsis muaj zog no yuav tsis txaus los kov yeej lub caij nplooj ntoo hlav rov qab thiab rub lub armature hla, ua rau tsis muaj kev nqis tes ua. Qhov kev ua txhaum no yuav raug kuaj pom thaum lub sij hawm ntsuas coil, qhia kev nyeem qis dua li 50-150 Ohm ntau yam.

Cov kab mob thiab cov khib nyiab

Relays, tshwj xeeb tshaj yog tsis yog - hom kaw lossis kaw tsis zoo, yog qhov yooj yim rau kev paug ib puag ncig. Nyob rau tib lub sijhawm, cov khoom me me ntawm cov plua plav, av, hlau shavings los ntawm cov khoom siv nyob ze, los yog cov khoom me me ntawm cov khoom siv hluav taws xob hauv lub cev tuaj yeem nkag mus rau hauv lub tshuab.

Ib qho, zoo- tso cov khoom tuaj yeem cuam tshuam kev txav ntawm armature, ua rau qaug dab peg. Xwb, tsis yog - cov khoom siv hluav taws xob tuaj yeem tsaws ncaj qha rau ntawm qhov chaw sib cuag. Nyob rau hauv cov ntaub ntawv no, lub relay yuav nyem, tab sis cov khib nyiab tiv thaiv kev sib cuag los ntawm kev sib txuas conductive, ua rau qhib Circuit Court ntawm cov zis sab.

Hlau Fatigue

Txhua yam khoom siv kho tshuab muaj lub neej ntev. Tsiv cov khoom nyob rau hauv ib tug relay, tshwj xeeb tshaj yog cov nyias hlau armature caj npab thiab rov qab lub caij nplooj ntoos hlav, fim kev nyuaj siab txhua lub sij hawm lub relay cycles. Lub relay cov ntaub ntawv qhia txog lub neej txhua yam, feem ntau hauv ntau lab lub voj voog.

Nyob rau tib lub sijhawm, qhov kev rov kho dua thiab txav mus ua rau hlau qaug zog. Microscopic cracks tsim thiab maj mam kis nrog txhua lub voj voog. Thaum kawg, cov khoom puas tsuaj. Yog hais tias lub armature caj npab snaps, nws yuav tsis nias hu ua ke. Yog hais tias lub caij nplooj ntoos hlav rov qab tawg, lub relay yuav daig qhib relay nyob rau hauv txoj hauj lwm energized. Qhov no yog qhov kawg ua rau "tawg tiv tauj caj npab" tsis ua haujlwm.

Visual Diagnostic Flowchart

Txhawm rau muab tag nrho cov txheej txheem kuaj mob no, peb tau tsim ib qho yooj yim, ntawv nyeem -raws li daim ntawv qhia. Siv qhov no raws li kev siv ceev los coj koj los ntawm kev daws teeb meem los ntawm kev soj ntsuam thawj zaug mus txog qhov kawg.

Pib: Puas yog lub kauj yuav tsum muaj zog?

Yes ->Koj puas hnov ​​ib tug nias los ntawm relay?

No ->Koj nyob ntawm Diagnostic Path 1.

Ntsuas qhov hluav taws xob ncaj qha ntawm relay terminals 85 thiab 86 thaum lub voj voog ua haujlwm. Puas yog qhov voltage ntau dua 8.5V?

No ->Qhov teeb meem yog nyob rau hauv kev tswj Circuit Court thaiv los yog lub hwj chim qhov chaw. Kho cov khoom siv hluav taws xob.

Yes ->Fais fab mov yog txaus. Nkag mus rau qhov kev xeem tom ntej.

Disconnect tus relay. Ntsuas kev tiv thaiv thoob plaws terminals 85 thiab 86. Puas yog ntawm 50-150Ω?

No (reads OL, infinite, or near 0) -> The coil is internally open or shorted. The relay has failed. ->Hloov Relay.

Yes -> The coil is electrically good. The failure is severe mechanical seizure inside the relay. ->Hloov Relay.

Yes ->Koj nyob ntawm Diagnostic Path 2.

Lub coil thiab armature ua haujlwm. Qhov teeb meem yog nrog hloov kev sib cuag.

Disconnect tus relay thiab teeb lub rooj zaum xeem nrog 12V qhov chaw.

Thaum lub zog coil ntawm lub rooj ntev zaum, ntsuas kev tiv thaiv ntawm terminals 30 thiab 87. Nws puas nyob ze 0Ω?

No (reads OL or high resistance) -> Internal contacts are oxidized, burnt, or broken. The relay has failed. ->Hloov Relay.

Yes ->Lub relay ua haujlwm kom raug ntawm lub rooj ntev zaum. Qhov teeb meem no yuav tshwm sim nyob rau hauv load circuit wiring, xoob terminal kev twb kev txuas nyob rau hauv lub qhov (socket), los yog cov khoom uas yog powered.

Qhov Kev Txiav Txim Kawg

Tom qab ua raws li cov kauj ruam kuaj mob no, koj yuav muaj lus teb meej txog koj qhov kev noj qab haus huv relay. Qhov no coj peb mus rau qhov kawg, cov lus nug tseem ceeb: tam sim no yog dab tsi? Koj yuav tsum sim kho qhov faulty relay los yog hloov nws yooj yim?

Rau feem coob ntawm cov niaj hnub, ntim yas 12V relays siv nyob rau hauv tsheb thiab electronics daim ntaub ntawv, cov lus teb yog tseeb.

Hauv ntau dua 99% ntawm cov neeg mob, qhov raug, nyab xeeb tshaj plaws, thiab tus nqi ntau tshaj - kev daws teeb meem zoo yog los hloov cov kev hloov pauv tsis raug.

Kev kho cov khoom siv no tsis tuaj yeem ua tau rau ntau qhov laj thawj. Lawv nyob nraum kaw units, ultrasonically welded los yog potted nyob rau hauv epoxy, tsis tsim los qhib yam tsis ua puas lub tsev. Internal Cheebtsam xws li cov ntsiab lus tiv tauj thiab cov springs yog microscopic thiab calibrated ilv.

Txawm hais tias koj tau tswj kom qhib rooj plaub yam tsis muaj kev puas tsuaj, ntxuav cov oxidized hu los yog rov-aligning bent armature yog ze li tsis tuaj yeem ua kom ntseeg tau. Tsis tas li ntawd, re- sealing lub relay los tiv thaiv los ntawm ya raws yav tom ntej thiab plua plav nkag tsis tau.

Xav txog qhov tshiab, siab -zoo relay raug nqi tsawg heev, lub sijhawm, kev siv zog, thiab kev pheej hmoo ntawm kev sim kho tsis tau tsuas yog tsis tsim nyog. Qhov tsuas yog qhov tshwj xeeb yuav loj heev, kim, qub -style industrial contactors tsim los pab tau, tab sis cov no yog ntiaj teb deb ntawm ntau 12V lub voos xwmfab relays.

Los ntawm kev ua raws li cov kauj ruam no, koj tau hloov los ntawm kev tsis meej pem mus rau qhov kev kuaj pom tseeb. Tam sim no koj paub tsis yog tias lub relay ua tsis tiav, tab sis raws nraim yog vim li cas nws ua tsis tau. Koj tuaj yeem ntseeg siab nruab ib qho tshiab, paub txog qhov teeb meem tiag tiag. Qhov kev ntsuam xyuas multimeter relay no thiab kev ntsuam xyuas tsis ua haujlwm relay ua kom koj nkag siab ob qho tib si cov tsos mob thiab cov hauv paus ntsiab lus ntawm cov teeb meem relay.

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