Vim li cas pheej yig 12V relays nquag hlawv? Hidden Circuit hem

Koj qhov kev cai LED teeb bar flickers thiab tuag ntawm txoj kev tsaus ntuj. Koj lub tsheb lub twj tso kua mis roj, uas koj nyuam qhuav hloov, nres ua haujlwm random, tawm hauv koj txoj kev tso tseg. Cov kev ntxhov siab thiab kev ua tsis tiav no feem ntau taug qab mus rau ib qho ntawm qhov tsawg tshaj plaws, feem ntau tsis quav ntsej qhov chaw hauv ib qho 12V hluav taws xob system: lub relay.

Nws yog ib qho yooj yim hloov uas siv hluav taws xob thiab hlau nplaum. Nws tau tsim kom muaj kev nyab xeeb ua haujlwm siab - cov khoom thauj tam sim no. Tab sis thaum koj xaiv qhov pheej yig, tsis muaj - lub npe version kom txuag tau ob peb las, koj tsis yog yuav ib feem uas yuav tsis kav ntev. Koj tab tom txhim kho lub sijhawm foob pob.

Tus nqi qis ntawm cov relays zais tus nqi loj hauv kev ntseeg siab, kev nyab xeeb, thiab kev pheej hmoo ntawm kev ua tsis tiav loj. Hauv qhov kev dhia dej tob no, peb yuav tshuaj xyuas raws nraim vim li cas pheej yig 12V relays nquag hlawv. Peb yuav dhau mus dhau qhov kev kwv yees yooj yim kom pom qhov tshwj xeeb engineering thiab cov teeb meem khoom siv ntawm lawv lub hauv paus.

Anatomy ntawm ib tug Failure

Thaum xub thawj pom, tag nrho cov "ice cube" relays tshwm tib yam. Lawv muaj cov duab zoo sib xws, tus pin layout, thiab cov ntaub ntawv yas. Qhov kev pom zoo sib xws no ua rau koj. Nyob rau hauv, qhov sib txawv ntawm ib tug zoo relay los ntawm ib tug zoo chaw tsim tshuaj paus thiab ib tug pheej yig fake yog loj. Cov kev sib txawv no tsis yog hais txog qhov zoo nkaus li. Lawv ncaj qha ua rau ntxov tsis ua hauj lwm thiab burnout. Peb tsis tu ncua pom peb qhov chaw tseem ceeb uas cov neeg tsim khoom pheej yig relays txiav cov fab. Txhua tus ua rau kev ua tsis tiav sai thiab feem ntau txaus ntshai.

Cov khoom siv tsis zoo

Lub plawv ntawm ib qho relay yog nws cov khoom siv hluav taws xob. Lawv txoj haujlwm yog qhib thiab kaw qhov siab - tam sim no Circuit Court. Lawv yuav tsum tiv taus cov hluav taws xob khaus arc uas tsim thaum txhua qhov kev hloov pauv. Qhov arc no yog ib qho me me, siab -plasma bolt kub. Nws vaporizes tus nqi microscopic ntawm cov khoom tiv tauj txhua zaus nws tua hluav taws.

Rau kev xav tau siv, tshwj xeeb tshaj yog nyob rau hauv tsheb lossis chaw tsim khoom, kev lag luam tus qauv rau kev sib cuag cov khoom yog cov nyiaj alloy. Silver Tin Oxide (AgSnO2) yog qhov kev xaiv saum toj kawg nkaus rau kev hloov siab -tam sim no DC loads xws li motors, twj, thiab teeb.

Yog vim li cas rau qhov no yog AgSnO2 qhov kev ua tau zoo dua. Nws muaj kev tiv thaiv zoo rau arc yaig. Qhov no txhais tau tias nws poob cov khoom me me nrog txhua qhov arc. Nws kuj tiv taus cov khoom xa mus thiab vuam zoo. Qhov no tiv thaiv cov neeg sib cuag los ntawm kev sib txuas mus tas li. Qhov no ua kom lub neej ntev, txhim khu kev qha kev pab cuam tshaj kaum tawm txhiab lub voj voog.

Ntawm no yog qhov teeb meem thawj zaug thiab tseem ceeb tshaj plaws ntawm pheej yig relays. Txhawm rau txiav cov nqi, cov tuam txhab hloov pauv qhov siab - ua haujlwm zoo nrog cov ntaub ntawv tsis zoo. Feem ntau, lawv siv ib qho tseem ceeb ntawm cov hlau yooj yim los yog qis -qib tooj liab nrog ib txheej nyias ntawm cov nyiaj.

Qhov no ua rau lub cev tsis muaj zog. Cov txheej nyiaj nyias nyias muab kev ua haujlwm zoo rau lub sijhawm luv luv. Txawm li cas los xij, qhov kub siab ntawm cov hluav taws xob arc sai sai hlawv cov txheej no. Qhov no nthuav tawm lub hauv paus hlau hauv qab.

Thaum cov hlau los yog tooj liab qhia tau hais tias, qhov tsis ua haujlwm nrawm nrawm heev. Cov ntaub ntawv no muaj qhov tsis zoo arc tsis kam. Lawv hnav sai sai, tsim cov pits thiab pob ntawm qhov chaw sib cuag. Qhov no ua rau muaj kev tiv thaiv kev tiv thaiv, uas ua rau muaj cua sov ntau dua, hauv lub voj voog vicious. Thaum kawg, qhov kub thiab txias ntawm cov khoom tawg ua rau cov neeg sib cuag tau yaj thiab lo ua ke. Qhov no yog hu ua relay contact welding. Hom kev ua tsis tiav no tuaj yeem ua rau muaj kev puas tsuaj loj.

Pua coil rwb thaiv tsev

Qhov thib ob tseem ceeb tshaj plaws yog electromagnetic coil. Qhov no yog ib tug spool ntawm zoo heev tooj liab hlau. Thaum powered nrog 12V, nws tsim ib qho chaw sib nqus. Daim teb no rub lub armature, uas txav cov kev sib cuag hloov. Thaum lub relay yog "rau," lub kauj no txuas txuas ntxiv thiab ua kom sov.

Lub nyias tooj liab hlau ntawm lub kauj yog coated nrog ib tug enamel rwb thaiv tsev. Qhov no tiv thaiv cov windings ntawm shorting rau ib leeg. Qhov zoo thiab qhov ntsuas kub ntawm cov enamel no yog qhov tseem ceeb rau lub neej ntawm relay, tshwj xeeb tshaj yog nyob rau hauv siab - qhov chaw kub xws li lub tsheb lub cav bay.

Cov tsheb zoo thiab kev lag luam relays siv hlau nplaum hlau nrog siab - kub rwb thaiv tsev. Qhov no feem ntau yog ntsuas raws li Chav Kawm F (155℃/ 311℃F) lossis Chav H (180℃/ 356℃F). Qhov no ua kom cov rwb thaiv tsev nyob ruaj khov thiab siv tau txawm tias thaum lub relay ua haujlwm hauv qhov hnyav hauv qhov chaw kub.

Qhov no yog lwm qhov chaw uas pheej yig relays ua rau muaj kev cuam tshuam txaus ntshai. Lawv feem ntau siv qis- qib hlau nplaum hlau nrog qhov ntsuas kub qis dua. Qee lub sij hawm nws qis npaum li chav A (105℃/ 221℃F). Cov enamel no tsuas tuaj yeem ua tsis tau qhov kev ua haujlwm kub uas muaj nyob hauv daim ntawv thov tsheb.

Cov txheej txheem ua tsis tiav yog kev tuag qeeb. Sij hawm dhau mus, kev sib xyaw ua ke ntawm cov coil nws tus kheej cov cua sov thiab cov cua sov ntawm lub cav bay ua rau qhov qis - qib rwb thaiv tsev ua nkig thiab tawg. Cov kab nrib pleb me me. Cov no tso cai rau cov windings nyob ib sab ntawm lub kauj ua hluav taws xob sib cuag.

Qhov no tsim qhov peb hu ua inter-tig luv. Qee qhov luv luv windings yuav tsis ua rau tsis ua haujlwm tam sim. Tab sis lawv zoo txo ​​cov coil tag nrho cov tsis kam. Raws li Ohm txoj cai lij choj (Kuv=V/R), qhov kev tawm tsam qis dua ua rau muaj kev kos tam sim no ntau dua. Qhov kev nce tam sim no ua rau muaj cua sov ntau dua. Qhov no ntxiv ua rau cov rwb thaiv tsev nyob ib puag ncig, ua rau luv luv. Qhov no thermal runaway txuas ntxiv mus txog rau thaum lub coil overheats heev uas nws melts tag nrho. Nws hlawv tawm thiab ua rau lub relay nres ua haujlwm. Qhov no yog thawj qhov ua rau ntawm relay overheating tsos mob qhov twg cov ntaub ntawv yas ua kub rau kov.

Mechanical thiab Assembly Weakness

Lub relay tsis yog ib qho hluav taws xob xwb. Nws kuj yog mechanical. Tus nqi ntawm quab yuam, los yog kev sib cuag, uas tuav cov neeg sib cuag ua ke thaum lub relay raug kaw yog ib qho tseem ceeb tsim qauv. Lub siab no yog los ntawm ib qho me me hauv lub caij nplooj ntoos hlav mechanism.

Yog tias qhov siab qis dhau lawm, nws tsim cov hluav taws xob tsis zoo ntawm cov neeg sib cuag. Qhov no ua rau muaj kev tiv thaiv siab. Qhov kev tiv thaiv no, txawm li cas los xij me me, ua haujlwm zoo li lub tshuab cua sov me me nyob rau ntawm qhov chaw tsis muaj zog tshaj plaws ntawm cov relay. Lub zog poob raws li cua sov tuaj yeem suav nrog cov qauv P=I²R (Power=Tam sim no Squared times Resistance). Txawm tias ob peb milliohms ntawm kev tiv thaiv ntxiv tuaj yeem tsim kom muaj qhov kub ntawm qhov tseem ceeb thaum cuam tshuam nrog cov tam sim no siab (piv txwv li, 20-30 amps). Qhov ntsuas kub hauv cheeb tsam no nce oxidation thiab yaig ntawm cov neeg sib cuag. Qhov no ua rau kev ua tsis tiav thaum ntxov.

Ntawm qhov tod tes, yog tias qhov kev sib tiv tauj siab dhau lawm, nws ua rau muaj kev cuam tshuam ntau dhau ntawm lub armature thiab lwm qhov chaw txav. Qhov no ua rau cov neeg kho tshuab hnav thaum ntxov thiab qhov kawg tsis ua haujlwm ntawm actuator mechanism.

Ua ib qho kev sib txuas nrog kev sib txuas thiab raug kev sib cuag yuav tsum muaj kev ua haujlwm zoo thiab cov ntaub ntawv zoo rau lub caij nplooj ntoos hlav thiab lub cev muaj zog. Qhov no yog thaj chaw uas pheej yig relays, nrog rau lawv tsom mus rau ntim tshaj qhov zoo, raug kev txom nyem heev.

Peb pom tias pheej yig relays qhia kev tsis sib haum xeeb hauv kev tsim khoom. Lub tshuab caij nplooj ntoos hlav feem ntau yog ua los ntawm cov khoom tsis zoo - cov hlau tsis zoo uas poob nws lub zog thiab nro lub sij hawm, tshwj xeeb tshaj yog thaum raug tshav kub. Cov txheej txheem sib dhos tsis muaj qhov calibration thiab kev tswj xyuas kom zoo kom ntseeg tau tias txhua qhov relay muaj qhov raug siab.

Qhov kev tsis sib haum xeeb no piav qhia vim li cas ib qho pheej yig relay tuaj yeem ua tsis tiav hauv ib lub lis piam, thaum lwm tus los ntawm tib pawg yuav kav ntev li ob peb lub hlis. Nws kuj yog vim li cas tus relay yuav sim "zoo" nrog ib tug multimeter tab sis tsis nyob rau hauv ib tug tiag tiag - ntiaj teb load. Lub siab tiv thaiv tsuas yog ua kom puas qhov cua sov thaum tseem ceeb tam sim no ntws los ntawm nws. Cov xwm txheej no tsis yog rov ua dua los ntawm kev sim txuas ntxiv yooj yim.

Los ntawm Annoyance mus rau Hazard

Ib tug tsis ua hauj lwm relay yog ntau tshaj li ib tug inconvenience. Cov kev ua tsis tiav peb tau tham txog -pitting hu, overheating coils, thiab welded keyboards- tuaj yeem nce los ntawm qhov tsis ua haujlwm yooj yim mus rau kev hem thawj rau koj lub tsheb thiab koj txoj kev nyab xeeb. Kev nkag siab txog qhov tiag - cov tsos mob thiab kev phom sij hauv ntiaj teb yog qhov tseem ceeb rau kev lees paub qhov kev pheej hmoo ua ntej nws dhau los ua kev puas tsuaj.

Paub cov cim ceeb toom

Ib tug relay tsis tshua ua tsis ntsiag to. Ua ntej ua tiav qhov kev kub ntxhov, nws feem ntau yuav qhia cov cim ceeb toom tias tus kws tshaj lij lossis tus nyiam nyiam tuaj yeem ntes tau. Paub txog cov tsos mob ntawm relay overheating tuaj yeem tiv thaiv qhov xwm txheej loj dua.

Lub suab nrov "nias," "sib tham," lossis "buzzing" suab los ntawm lub thawv relay. Qhov no tuaj yeem qhia tau tias lub coil tsis muaj zog tawm tsam los tuav cov neeg raug kaw lossis cov neeg sib cuag uas tau nrawm nrawm thiab ua rau muaj kev sib txuas tsis zoo.

Cov yas casing ntawm lub relay yog kub rau qhov kov. Lub relay yuav sov thaum lub sijhawm ua haujlwm. Tab sis yog tias nws kub dhau los ua kom yooj yim kov, nws yog qhov pom tseeb ntawm kev tiv thaiv sab hauv los yog luv luv.

Discoloration, warping, los yog melting ntawm relay lub yas vaj tse. Qhov no yog ib qho kev qhia siab heev ntawm overheating hnyav thiab qhia tias yuav ua tsis tiav.

Intermittent kev khiav hauj lwm ntawm cov tswj Circuit Court. Yog tias koj lub twj tso kua roj roj, lub teeb, lossis kiv cua tig rau thiab tawm tsis tu ncua, nws feem ntau yog ib qho kev qhia tias cov neeg sib txuas lus tau hnyav heev thiab ua tsis tau zoo sib xws.

Cov ntxhiab tsw txawv ntawm cov yas los yog cov kwj deg, ozone -zoo li tsw ntxhiab ze ntawm lub fuse lossis relay lub thawv. Qhov no yog qhov tsis hnov ​​tsw ntawm coil lub enamel rwb thaiv tsev kub los yog cov yas casing pib yaj.

Welded Contact Danger

Tej zaum qhov txaus ntshai tshaj plaws tsis ua hauj lwm hom rau ib tug pheej yig relay yog hu rau vuam. Raws li peb tau npog, cov cua kub hnyav los ntawm arcing hla cov ntaub ntawv tsis zoo tuaj yeem ua rau lawv cov lus yaj thiab fuse ua ke. Thaum qhov no tshwm sim, lub relay yuav daig nyob rau hauv "ON" txoj hauj lwm.

Qhov hloov pauv tsis tuaj yeem qhib tau lawm.

Qhov cuam tshuam loj heev. Xav txog cov roj twj tso kua mis relay uas welds kaw. Txawm tias tom qab koj tig lub qhov hluav taws xob tawm thiab tshem tawm nws, lub twj tso kua mis roj tseem khiav, ua kom lub zog ntawm cov roj. Nws yuav khiav mus txog thaum lub roj teeb tag nrho. Los yog, nyob rau hauv qhov xwm txheej tsis zoo, kom txog rau thaum lub twj tso kua mis lub cev muaj zog nws tus kheej overheats los ntawm kev ua haujlwm tas mus li, tsim kom muaj kev phom sij tseem ceeb.

Xav txog lub siab - lub hwj chim pab txias kiv cua relay uas welds kaw. Cov kiv cua yuav khiav tas li, ntws lub roj teeb. Qhov txaus ntshai tshaj, yog tias lub tshuab kiv cua tsis ntsuas rau 100% kev ua haujlwm tas mus li, nws tuaj yeem ua kom sov, tuav, thiab nws cov xaim tuaj yeem ntes hluav taws. Qhov no yog ib tug paub ua rau automotive relay hluav taws kub txaus ntshai. Tib yam kev phom sij yog siv rau siab -kev siv hluav taws xob (HID) lossis LED teeb tuav. Yog tias lawv tsis tuaj yeem muab tua, lawv cov ballasts lossis cov tsav tsheb tuaj yeem ua rau kub dhau, ua rau muaj kev pheej hmoo hluav taws.

Kev Tshawb Fawb Txog Hluav Taws Xob

Tsis ntev los no peb tau ua qhov kev soj ntsuam tsis ua tiav ntawm cov khoom siv los ntawm lub tsheb uas tau ntsib ib qho me me hauv qab - hood hluav taws. Lub hauv paus ntawm qhov hluav taws xob tau taug qab rov qab mus rau cov xaim rau lub tshuab hluav taws xob tom qab muag hluav taws xob. Tus neeg ua txhaum yog tus pheej yig, tsis muaj npe 12V relay uas tau siv los tswj nws.

Thaum sib cais lub relay, peb pom raws nraim qhov peb xav tau. Cov kev sib cuag, ua los ntawm thinly plated tooj liab, tau tag welded ua ke. Tus tswv tau tshaj tawm tias nws tau pom tus kiv cua khiav ob peb feeb tom qab kaw lub tsheb ob peb zaug tab sis xav txog me ntsis.

Hnub ntawm qhov xwm txheej, cov welded relay khaws cov kiv cua khiav tsis tu ncua tom qab tsav tsheb ntev. Cov kiv cua lub cev muaj zog, tsis yog tsim los rau hom kev ua haujlwm tsis yog - nres, thaum kawg overheated. Nws sab hauv rwb thaiv tsev ua tsis tiav, ua rau tuag luv luv hauv nws cov hluav taws xob thaiv hluav taws xob. Cov xov hlau, tsis muaj kev tiv thaiv los ntawm lub fuse loj loj rau qhov luv luv - Circuit Court, ua liab kub thiab ignited lawv cov yas loom thiab nyob ze oily residue, pib hluav taws. Cov ntaub ntawv no yog qhov muaj zog, tiag tiag -kev ua qauv qhia thoob ntiaj teb ntawm qhov ob peb las tau txais kev cawmdim ntawm kev xa xov cuav tuaj yeem ua rau muaj kev phom sij rau tsheb thauj mus los.

Pom qhov qis -Quality Relay

Nrog kev ua lag luam raug dej nyab nrog cov khoom cuav thiab qis - cov kev xaiv zoo, muaj peev xwm qhia tau qhov kev ntseeg tau los ntawm qhov txaus ntshai yog ib qho txuj ci tseem ceeb. Ib tus kws tshaj lij tshaj lij tsim kev xav rau qhov no. Tab sis muaj ob peb kauj ruam uas leej twg tuaj yeem ua los txheeb xyuas qhov cuav lossis qhov tsis zoo. Koj tsis tas yuav muaj chav kuaj. Koj tsuas yog xav paub seb yuav nrhiav dab tsi.

Kev tshuaj xyuas lub cev

Ua ntej txhim kho ib qho relay, tshwj xeeb tshaj yog ib qho los ntawm kev lag luam hauv online lossis tus neeg muag khoom tsis paub, ua qhov yooj yim tsib -kauj ruam tshuaj xyuas.

Tshawb xyuas qhov hnyav thiab xav. Nqa lub relay. Ib feem zoo los ntawm ib hom khoom xws li Bosch, TE Connectivity, los yog Omron xav tias ntom thiab ruaj khov. Qhov hnyav no yog los ntawm ib qho tooj liab coil, lub zog siv hluav taws xob, thiab, qhov tseem ceeb tshaj plaws, cov khoom siv nyiaj- cov khoom sib cuag. Ib tug pheej yig relay feem ntau pom tau tias sib dua, yuav luag hollow. Qhov no yog vim nws siv tooj liab tsawg dua nyob rau hauv lub kauj thiab muaj flimsy hlau los yog tooj liab hu es tsis txhob ntawm ib tug ntom nyiaj alloy.

Tshawb nrhiav cov cim. Cov tuam txhab lag luam zoo txaus siab rau lawv cov khoom lag luam. Lawv cov relays yuav muaj nkig, meej, thiab ruaj khov. Cov no feem ntau yog laser -etched los yog siv nrog siab - zoo pad printing. Nrhiav lub npe hom, tus lej, daim duab kos, thiab cov ntawv pov thawj raug cai xws li UL, CE, lossis VDE. Cov ntaub ntawv cuav feem ntau muaj qhov muag plooj, smudged, lossis cov ntawv me me uas tuaj yeem khawb tau yooj yim nrog tus ntiv tes. Typos nyob rau hauv cov ntawv nyeem yog ib tug tuag giveaway.

Tshawb xyuas lub Casing thiab Terminals. Cov yas vaj tsev nyob rau ntawm ib qho zoo relay feem ntau yog ua los ntawm qhov siab -kub thermoplastic zoo li PBT (Polybutylene terephthalate) los yog iav - puv Nylon. Cov ntaub ntawv no feem ntau muaj me ntsis matte, siab - ua tiav zoo. Pheej yig relays feem ntau siv ci, nkig ABS yas. Qhov no muaj qhov qis melting point thiab tuaj yeem pom qhov tsis zoo xws li flash lossis dab dej. Tom ntej no, saib cov terminals. Ntawm qhov zoo relay, lawv yuav ruaj khov, ua los ntawm tooj liab lossis tooj dag, thiab sib npaug plated nrog tin kom tiv thaiv corrosion. Ntawm qhov pheej yig relay, cov terminals yuav hnov ​​​​ntxhiab tsw thiab feem ntau ua los ntawm cov hlau nrog nyias nyias, tsis sib xws. Kev kuaj ceev nrog cov hlau nplaum me me tuaj yeem nthuav tawm. Yog tias cov terminals yog sib nqus, lawv yog hlau, tsis yog tooj liab lossis tooj dag.

Mloog rau "Nyem." Yog tias koj muaj 12V lub zog hluav taws xob, koj tuaj yeem sim cov relay tus actuation. Ib tug zoo relay ua ib tug ntse, ntseeg siab, thiab nws yog xim hlau "nias" thaum nws koom. Lub suab no qhia tau hais tias lub kauj muaj zog thiab lub qhov dej zoo - ua lub tshuab ua haujlwm nrog lub caij nplooj ntoos hlav zoo. Ib tug pheej yig relay tej zaum yuav tsis muaj zog, mushy, los yog nyob ntsiag to suab. Qhov no tuaj yeem hais qhia lub kauj tsis muaj zog lossis lub caij nplooj ntoos hlav tsim tsis zoo uas yuav tsis muaj kev sib cuag txaus.

Nqe Test. Qhov no yog qhov kev sim siab tshaj plaws ntawm txhua tus. Zoo engineering, khoom siv, thiab kev tsim khoom raug nqi nyiaj. Yog tias koj pom ib lub relay raug muag nrog lub npe loj rau tus nqi uas zoo li zoo dhau los ua qhov tseeb, nws yuav luag yog qhov cuav. Bosch los yog TE relay tiag tiag tsis tuaj yeem tsim thiab muag rau tib tus nqi raws li qhov tsis muaj npe, loj- tsim cov khoom cuav.

Quality vs. Counterfeit Glance

Txhawm rau sau cov ntsiab lus tseem ceeb ntawm kev soj ntsuam, peb siv cov lus no ua ib qho kev siv ceev thaum ntsuas qhov chaw.

Ua Kev Xaiv Zoo

Zam kev ua tsis tiav tsis yog tsuas yog pom cov fakes. Nws kuj tseem hais txog kev xaiv qhov raug, siab -zoo relay rau koj qhov kev siv tshwj xeeb. Ib qho zoo kawg nkaus relay tseem tuaj yeem ua tsis tau thaum ntxov yog tias nws tau siv hauv Circuit Court uas nws tsis tau tsim. Kev nkag siab txog cov khoom thauj koj hloov pauv yog thawj kauj ruam mus rau kev xaiv kev ntseeg siab.

Match Relay rau Load

Tsis yog txhua qhov hluav taws xob thauj khoom raug tsim sib npaug. Hom ntawm cov cuab yeej relay tswj tau muaj kev cuam tshuam loj heev ntawm kev ntxhov siab tso rau nws cov neeg sib cuag. Peb categorize loads rau hauv peb hom loj.

Resistive Loads: Cov no yog cov khoom yooj yim tshaj plaws rau lub relay los tuav. Piv txwv xws li cov qhov muag teev incandescent thiab cov khoom cua sov yooj yim. Tam sim no nce tam sim ntawd mus rau theem ruaj khov thiab poob rau xoom sai li sai tau thaum hloov tawm. Cov hluav taws xob arc yog kwv yees tau thiab kuj yooj yim los tswj.

Inductive Loads: Cov no yog cov kev puas tsuaj loj tshaj plaws rau cov neeg sib txuas lus. Piv txwv muaj xws li hluav taws xob motors (kiv cua, roj twj tso kua mis, lub qhov rais motors), solenoids, thiab ballasts nyob rau hauv cov laus fluorescent teeb. Thaum lub relay hloov lub inductive load tawm, lub collapsing magnetic teb nyob rau hauv lub cev muaj zog los yog solenoid tsim ib tug loj voltage spike nyob rau hauv opposite kev taw qhia. Qhov no hu ua rov qab -EMF. Qhov no ua rau muaj zog, ntev arc hla cov neeg sib cuag thaum lawv qhib, ua kom nrawm nrawm rau lawv qhov yaig. Qhov no yog thawj qhov ua rau ntawm relay tsis ua hauj lwm ua rau hauv automotive systems.

Capacitive / Teeb Loads: Cov khoom thauj no nthuav tawm qhov sib tw sib txawv. Piv txwv li niaj hnub LED teeb pom kev zoo arrays, HID headlight ballasts, thiab suab amplifier fais fab mov. Cov khoom siv no muaj cov capacitors loj ntawm lawv cov tswv yim. Cov no kos ib qho siab heev, luv luv surge ntawm tam sim no lawv nyob nraum switched rau. Qhov "inrush tam sim no" tuaj yeem yog 10 mus rau 20 npaug ntawm qhov ruaj khov- lub xeev khiav tam sim no. Nws tuaj yeem ua rau microscopic vuam ntawm cov neeg sib txuas lus, txawm tias tus relay ruaj khov- lub xeev ntsuas txaus txaus.

Thaum xaiv ib tug relay, koj yuav tsum xaiv ib tug ntaus nqi rau cov hom ntawm load. Nrhiav cov relays uas qhia meej meej rau "lub cev muaj zog" lossis muaj "tungsten" (teeb) ntsuas yog tias koj hloov siab - lub teeb pom kev zoo. Cov relays no yog tsim los nrog cov ntaub ntawv tiv tauj uas muaj zog dua (xws li AgSnO2) thiab lwm yam nta los tswj cov kev ntxhov siab ntawm kev cuam tshuam tam sim no thiab rov qab -EMF.

Ntsiab Specifications mus kuaj

Thaum koj paub koj hom kev thauj khoom, koj tuaj yeem tshawb xyuas cov lus qhia tshwj xeeb ntawm cov ntaub ntawv relay. Tsis txhob cia siab rau cov lej luam tawm ntawm rooj plaub ib leeg. Nco ntsoov sab laj cov ntaub ntawv raug cai los ntawm cov chaw tsim khoom kom pom cov duab tiav.

Hu rau Kev Ntsuas Tam Sim No: Qhov no yog tus lej tseem ceeb tshaj plaws, tab sis nws xav tau cov ntsiab lus. Rau ib tug resistive load, xyuas kom meej qhov kev ntsuam xyuas yog yooj yim tshaj koj Circuit Court qhov siab tshaj plaws tam sim no. Rau lub cev muaj zog inductive, ib txoj cai ntawm tus ntiv tes xoo yog xaiv ib lub relay nrog kev ntsuas tam sim no tsawg kawg ob npaug ntawm lub cev muaj zog tsis tu ncua - lub xeev khiav tam sim no. Qhov no ua kom nws muaj peev xwm tswj tau qhov pib inrush thiab kaw -rotor tej yam kev mob.

Cov ntaub ntawv tiv tauj: Qhov no yog ib qho tseem ceeb spec. Rau txhua qhov siab - daim ntawv thov tam sim no, lossis ib lub voj voog uas muaj lub cev muaj zog, twj tso kua mis, lossis siab - lub teeb hluav taws xob, tsis txhob txiav txim siab rau yam tsawg dua Silver Tin Oxide (AgSnO2). Daim ntawv qhia yuav sau qhov no. Yog hais tias cov khoom tsis tau teev los yog teev tsuas yog "silver alloy," yuav tsum ceev faj.

Coil Voltage: Qhov no yuav tsum phim koj lub cev qhov hluav taws xob. Rau feem ntau cov tsheb thiab cov kev nyiam ua haujlwm, qhov no yuav yog 12V DC. Siv lub relay nrog qhov tsis ncaj ncees lawm coil voltage yuav tsis ua kom nws los yog hlawv tawm lub kauj.

Kev Ua Haujlwm Kub Kub: Qhov no tsis yog - sib tham tau rau kev siv tsheb. Saib rau lub relay nrog ntau yam kev ua haujlwm, xws li -40℃txog 125 degree. Kev lag luam relay ntsuas tsuas yog 85℃yuav tsis muaj sia nyob ntev hauv lub cav kub kub.

Hom thiab Qhov Chaw: Thaum kawg, txoj hauv kev yooj yim tshaj plaws los xyuas kom zoo yog lo nrog cov tuam txhab muaj npe nrov thiab yuav los ntawm lawv cov neeg muag khoom tso cai. Kev yuav los ntawm cov chaw muag khoom hluav taws xob loj es tsis qhia npe thib peb - cov neeg muag khoom ntawm cov chaw muag khoom tau txo qis koj txoj kev pheej hmoo ntawm kev txais cov khoom cuav.

Tus nqi tseeb ntawm cov khoom siv

Peb tau taug kev tob rau hauv qhov txo qis 12V relay, coj nws sib nrug los ntawm txheej. Peb tau pom tias qhov relay tsis ua haujlwm ua rau pheej yig relays hlawv tawm tsis yog qhov tsis paub. Lawv yog cov txiaj ntsig ncaj qha ntawm kev txiav txim siab engineering cuam tshuam. Los ntawm cov ntaub ntawv sib cuag uas tsis tuaj yeem tiv taus hluav taws xob arcing rau coil rwb thaiv tsev uas tawg nrog cov cua sov thiab cov khoom sib dhos uas tsis muaj qhov tseeb, txhua lub kaum sab xis txiav yog qhov ua tsis tiav.

Qhov kev ua tsis tiav no tsis yog teeb meem ntawm kev ntseeg xwb. Nws yog ib qho kev nyab xeeb tiag tiag. Lub relay yog ib qho khoom siv tiv thaiv, tsim los tswj cov hluav taws xob siab kom koj cov keyboards ilv thiab tswj hluav taws xob tsis tas yuav tsum tau. Thaum cov cuab yeej tiv thaiv ntawd yog qhov tsis txaus ntseeg, nws nres ua kev tiv thaiv thiab ua rau muaj kev phom sij rau nws tus kheej. Nws muaj peev xwm ua rau muaj kev puas tsuaj hauv Circuit Court, cia koj tso tseg, lossis txawm pib hluav taws. Cov kev phom sij tsis raug cai yog qhov tiag thiab hnyav. Cov nyiaj ob peb tau txais kev cawmdim ntawm kev xa rov qab cuav yog kev lag luam ruam thaum ntsuas tiv thaiv tus nqi ntawm kev rov kho dua, kev puas tsuaj tsis zoo, thiab kev nyab xeeb ntawm koj qhov project lossis tsheb. Ib txwm ua qhov tseem ceeb tshaj plaws. Koj txoj haujlwm, koj lub tsheb, thiab koj txoj kev thaj yeeb nyab xeeb yog qhov tsim nyog rau kev nqis peev me me hauv ib feem uas tsim los ua nws txoj haujlwm nyab xeeb thiab ntseeg tau.

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