Yuav Ua Li Cas Ntsuas Ib Relay nrog Multimeter (Step by Step Guide)
Txheem
Relays yog ib qho ntawm cov khoom siv hluav taws xob tseem ceeb tshaj plaws hauv tsheb, lub tshuab hluav taws xob hauv tsev thiab lwm yam kev siv uas yuav tsum tau hloov ceev ceev ntawm lub zog hluav taws xob circuits. Txawm li cas los xij, zoo li cov khoom siv hluav taws xob, cov khoom siv hluav taws xob yuav raug hnav thiab tsim kua muag thiab tuaj yeem ua tsis tau txhua lub sijhawm. Yog li, nws yog ib qho tseem ceeb heev uas yuav tau sim koj cov relays tsis tu ncua kom ntseeg tau tias lawv ua tau zoo tshaj plaws.
Ib qho ntawm ntau txoj hauv kev sim relay yog digital multimeter. Cia kuv taug kev koj los ntawm cov kauj ruam kom pib sim lub relay nrog lub multimeter.
Hais txog relay
Lub relay yog ib qho khoom siv hluav taws xob tswj nrog lub kaw lus tswj (input circuit) thiab tswj qhov system (tso tawm hluav taws xob), uas feem ntau pom nyob rau hauv cov tswj circuits. Nws ua hauj lwm raws li ib tug Circuit Court regulator, kev ruaj ntseg Circuit Court thiab converter. Lub relay nta cov lus teb ceev ceev, kev ua haujlwm ruaj khov, kev pab lub neej ntev thiab me me. (1)
Relays feem ntau yog siv los tswj lub siab tam sim no los ntawm qhov hluav taws xob qis tam sim no. Lawv nyob hauv yuav luag txhua lub tsheb. Relays ua haujlwm raws li cov keyboards, tso cai rau lub voj voog qis amperage los qhib lossis tawm lub siab amperage Circuit Court. Tsis tas li ntawd, lub relay tseem tuaj yeem tswj tau ntau lub tshuab tib lub sijhawm, xws li tig lub teeb taws thaum lub wipers qhib, lossis txuas lub kav hlau txais xov thaum lub xov tooj cua qhib.
Yam koj xav tau thaum kuaj lub Relay
Kev ntsuam xyuas koj lub tsheb relay yog ib txoj kev yooj yim uas tsis tas yuav siv cov khoom siv ua tiav. Txhawm rau pib kuaj lub relay, koj yuav xav tau cov khoom hauv qab no:
Cov cuab yeej:
- High impedance kuaj lub teeb
- Ib qho ohmmeter, feem ntau hu ua digital multimeter (DMM).
- Automotive Service Manual (yeem tab sis pom zoo heev)
Qhov chaw spare:
- Hloov Relay kom raug
- jumper kab
Relay Test Cov kauj ruam
Kauj ruam 1: Nrhiav tus Relay
Nyob ntawm seb nws tswj tau dab tsi, koj tuaj yeem pom cov relay nyob rau hauv lub dash lossis hauv lub cav bay. Tshawb xyuas tshooj hluav taws xob ntawm koj phau ntawv qhia kev pabcuam thiab daim duab thaiv yog tias koj tsis paub meej txog qhov kev tso kawm.
Kauj ruam 2: Xyuas thiab ntxuav cov connectors
Thaum koj pom tus relay, tshem nws. Tom qab ntawd ntxuav thiab tshuaj xyuas cov connectors thaum lub relay no tawm. Hloov lub ntsiab relay nrog qhov tsim nyog hloov yog qhov ceev tshaj plaws thiab yooj yim tshaj plaws los ntsuas nws.
Kauj ruam 3: Tau ib tug multimeter
Teem koj lub multimeter rau kev ntsuas ntsuas hom. Tom qab ntawd ntsuas qhov tsis kam los ntawm kev kov cov coil hu. Cov txheej txheem coil muaj qhov ua haujlwm ntawm 40 ohms txog 120 ohms. Ib tug phem solenoid coil winding qhia tau hais tias lub relay tawm ntawm ntau yam los yog qhib thiab nws yog lub sij hawm los hloov nws. Tom qab ntawd khaws lub multimeter nyob rau hauv tsis kam los yog continuity hom. Tom qab ntawd, txuas cov kev sib cuag mus rau cov coj. Nws yuav tsum qhia qhib lossis OL yog tias nws yog ib qho qhib relay.
Kauj ruam 4: Qhib lub electromagnet kauj
Nrog lub roj teeb 9-12V ntawm cov neeg sib cuag, siv lub zog rau lub kauj hlau nplaum no. Thaum lub coil energizes thiab kaw tus tes hloov, lub relay yuav tsum ua ib tug audible click. Ntawm 4-pin relay, polarity tsis tseem ceeb, tab sis ntawm diode relays nws yog qhov tseem ceeb.
Kauj Ruam 5: Txuas lub teeb sim
Txuas lub roj teeb zoo rau ib qho ntawm cov khoom siv hluav taws xob thaum lub coil tseem ua haujlwm. Tom qab ntawd txuas lub teeb ntsuas nruab nrab ntawm av thiab hloov lub davhlau ya nyob twg. Lub teeb tswj yuav tsum haus hluav taws xob thiab ci. Tom qab ntawd tshem tawm qhov zoo jumper ntawm lub roj teeb. Lub teeb tswj yuav tsum tawm tom qab ob peb feeb.
Kauj Ruam 6: Txheeb xyuas qhov Voltage Relay
Ntawm qhov hloov pauv, txheeb xyuas qhov hluav taws xob relay. Cov ntsiab lus sib cuag tsis zoo tuaj yeem ua rau tsis muaj hluav taws xob. Tshem lub teeb ntsuas thiab hloov lub multimeter rau DC voltage. Tom qab ntawd txuas cov xov hlau mus rau qhov ntsuas lub teeb txuas lossis hloov kev sib cuag. Kev nyeem ntawv yuav tsum phim lub roj teeb voltage.
Kauj Ruam 7: Txheeb xyuas qhov hloov
Txheeb xyuas qhov tsis zoo hauv qhov hloov. Qhov zoo jumper yuav tsum raug txiav thiab lub solenoid coil yuav tsum tau ua kom muaj zog. Tom qab ntawd ntsuas qhov tsis kam hla cov kev sib cuag nrog lub multimeter teem rau ohms. Feem ntau, qhib relay yuav tsum ntsuas ze rau xoom tsis kam thaum qhib, thaum ib txwm kaw relay yuav tsum ntsuas qhib lossis OL thaum qhib.
Relay Test Pro Cov Lus Qhia
Thaum ua haujlwm nrog relays, nws raug nquahu kom nco ntsoov cov hauv qab no:
Tsis txhob sib tov thiab sib tov
Thaum koj muaj qhov tsis zoo relay uas yuav tsum tau hloov, nws tsis yog ib lub tswv yim zoo rau kev sib xyaw thiab sib tw relays los ntawm lwm cov khoom siv tsheb lossis cov thoob khib nyiab random hauv koj lub chaw nres tsheb. Qhov no tuaj yeem ua rau luv luv lossis lub zog hluav taws xob uas yuav ua rau koj lub tsheb hluav taws xob puas. (2)
Ua tib zoo saib xyuas
Nws yog ib qho tseem ceeb heev uas yuav tsum ceev faj tsis txhob tso lub relay. Yog hais tias lub relay lub sab hauv lub Cheebtsam raug puas lawm, cov hlau yuav hlawv los yog yaj. Tsis tas li ntawd tsis txhob cuam tshuam nrog kev ua haujlwm ntawm relay.
Khaws cia kom deb ntawm cov pa roj combustible
Tsis txhob ua haujlwm relays lossis ib yam dab tsi uas yuav tsum tau muaj hluav taws xob hauv thaj chaw uas muaj cov pa hluav taws xob tawg lossis hluav taws xob xws li roj av lossis lwm yam roj.
Nyeem phau ntawv kho
Tshawb xyuas koj lub tsheb phau ntawv qhia kev pabcuam (tsis yog koj tus tswv phau ntawv) txhawm rau txheeb xyuas thiab nkag siab txog kev xaim thiab kev xa xov, txawm tias koj twb yog tus kws kho tsheb uas muaj kev paub dhau los.
Npaj koj cov cuab yeej
Npaj tag nrho cov cuab yeej tsim nyog ua ntej thiab muab txhua yam hauv nws qhov chaw. Qhov no yuav txuag koj lub sijhawm muaj txiaj ntsig thiab tso cai rau koj tsom mus rau txoj haujlwm tam sim no yam tsis tau nrhiav cov cuab yeej thaum lub sijhawm ua haujlwm.
Cov lus nug nquag nug
Nws raug nqi npaum li cas los hloov lub relay?
Ib tug relay tuaj yeem raug nqi nyob qhov twg los ntawm $ 5 mus rau ntau pua las, nyob ntawm seb nws tswj tau dab tsi. Tom ntej no yog ohmmeters, uas raug nqi tsawg dua $ 20 thiab tuaj nyob rau hauv ntau yam duab thiab ntau thiab tsawg. Qhov thib ob, cov teeb pom kev siab impedance yog me ntsis kim dua, qhov nruab nrab $ 20 txog $ 40. Thaum kawg, jumpers yog pheej yig, txij li $ 2 txog $ 50 nyob ntawm qhov ntev ntawm cov xaim.
Yuav ua li cas yog tias kuv tsis quav ntsej txog qhov teeb meem tshwm sim?
Tsis quav ntsej txog qhov ua tsis tiav lossis txhim kho ib qho qub relay uas haum tuaj yeem ua rau muaj teeb meem loj. Yog hais tias lub relay tsis ua haujlwm lossis raug teeb tsa tsis raug, nws tuaj yeem hlawv cov xov hlau thiab tuaj yeem pib hluav taws.
Kuv tsis muaj ohmmeter lossis kuaj lub teeb. Kuv puas tuaj yeem tshawb xyuas lub relay?
Tsis muaj. Koj tsuas muaj ob txoj kev xaiv yog tias koj paub tseeb tias koj lub relay yog qhov teeb meem, thiab ob qho tib si yuav tsum tau siv lub ohmmeter, kuaj lub teeb, thiab lwm yam. Ua ntej, ceev faj thiab hloov lub ntsiab relay nrog cov cuab yeej tsim nyog. Qhov thib ob, yog tias koj tsis muaj cov cuab yeej los ntsuas nws, koj tuaj yeem ntiav ib tus kws kho tsheb los xyuas thiab kho cov relay rau koj.
Koj tuaj yeem tshawb xyuas lwm cov kev ntsuas ntsuas ntsuas hauv qab no;
- Yuav ua li cas kuaj lub capacitor nrog multimeter
- Yuav ua li cas siv ib tug multimeter los xyuas qhov voltage ntawm nyob ntawm tej
- Yuav ua li cas ntsuas av nrog ib tug multimeter
tswv yim pom zoo
(1) tswj qhov system - https://www.britannica.com/technology/control-system
(2) khib nyiab - https://www.learner.org/series/essential-lens-analyzing-photographs-across-the-curriculum/garbage-the-science-and-problem-of-what-we-throw-away /
