Yuav ua li cas siv ib tug multimeter los txiav txim seb lub xeev relay yog zoo los yog phem
Thaum peb txheeb xyuas seb cov khoom hauv lub xeev relay yog qhov zoo lossis qhov tsis zoo, nws feem ntau tsis tuaj yeem ntes nws nrog multimeter. Txoj kev tshawb nrhiav kom raug yuav tsum zoo li no.
Ua ntej tshaj plaws, tom qab kev tshuaj ntsuam xyuas tiav, peb tuaj yeem txuas lub 3V rau 32V adjustable DC voltage qhov chaw rau nws lub input tswj davhlau ya nyob twg. Lub sijhawm no, peb yuav tsum tau soj ntsuam seb qhov taw qhia lub teeb-emitting diode tuaj yeem ci li ib txwm. Nyob rau lub sijhawm no, peb yuav tsum tau them sai sai rau qhov tso zis davhlau ya nyob twg yam tsis tau txuas lub load. , thiab tsis txhob txuas rau lub hwj chim mov.
Cov kauj ruam thib ob yog ua haujlwm zoo li no: Lub sijhawm no, peb tuaj yeem siv tus pointer multimeter RX1K txhawm rau txheeb xyuas qhov tso tawm qhov hluav taws xob tsis kam. Yog hais tias lub input davhlau ya nyob twg tswj voltage UI<2.7V, the resistance value indicated by the multimeter should be infinite, in other words, the solid state relay The output terminal of the solid state relay should be non-conductive; we continue to increase the voltage. When the voltage increases to 3V, the resistance value of the multimeter is generally lower than 10 ohms, indicating that the output terminal of the solid state relay has been conducted.
Cov kauj ruam kawg yog kauj ruam thib peb: Tom qab cov kev sim hauv thawj ob kauj ruam yog qhov qub, peb tuaj yeem txuas cov khoom thauj thiab lub zog. Thaum lub input voltage yog 0V, lub load tsis ua hauj lwm; Thaum lub input voltage nce mus txog 5V, lub load yuav ua hauj lwm. Lub sijhawm no, nws txhais tau hais tias cov khoom hauv lub xeev relay tsis zoo, txwv tsis pub cov khoom hauv lub xeev relay faulty thiab yuav tsum tau kho.
Nyob rau ntawm lub tsev nyob ntawm AC lub xeev relay, lub input davhlau ya nyob twg yog feem ntau cim nrog "ntxiv", "-" thiab "INPUT", thaum lub sij hawm tso zis davhlau ya nyob twg tsis tau muab faib ua zoo thiab tsis zoo, tab sis qee cov khoom siv cim nrog lo lus " LOAD". Rau DC cov khoom hauv lub xeev relays, cov tswv yim thiab cov khoom tso tawm feem ntau yog cim nrog "ntxiv" thiab "-", thiab qee cov khoom siv kuj tau cim nrog cov lus "IN" (input) thiab "OUT" (tso tawm) los qhia qhov txawv.
Thaum siv lub tshuab hluav taws xob digital los txheeb xyuas cov tswv yim thiab cov tswv yim, koj tuaj yeem siv cov ntaub ntawv diode los ntsuas cov lus qhia rau pem hauv ntej thiab rov qab ntawm plaub tus pins feem, thiab tus nqi hluav taws xob ntawm ib khub ntawm pins yuav tsum ntsuas raws li txoj cai. rau pem hauv ntej conduction thiab thim rov qab txiav tawm, uas yog, nws qhia "1.3 ~ 1.6V" thaum ntsuas nyob rau hauv pem hauv ntej kev taw qhia, thiab qhia lub overflow cim "1" thaum kuaj nyob rau hauv lub rov qab kev taw qhia. Raws li qhov no, nws tuaj yeem txiav txim siab tias ob tus pins no yog cov khoom siv hluav taws xob, thiab thaum ntsuas qhov zoo, qhov ntsuas ntawm "1.3 ~ 1.6V" tau tshwm sim, cov hlau kuaj liab txuas nrog tus ncej zoo, thiab cov xim dub. kuaj txhuas txuas nrog rau tus ncej tsis zoo. Rau DC solid-state relays, tom qab nrhiav tau lub input davhlau ya nyob twg, qhov zoo thiab tsis zoo ncej ntawm cov zis davhlau ya nyob twg yog feem ntau opposite rau ib leeg horizontally. Nws yuav tsum tau taw qhia tias qee qhov DC solid-state relays muaj kev tiv thaiv diodes ntawm lawv cov khoom siv hluav taws xob, cov ncej zoo ntawm lub raj tiv thaiv txuas nrog cov ncej tsis zoo ntawm cov khoom siv hauv lub xeev diode, thiab cov ncej tsis zoo ntawm lub raj tiv thaiv txuas nrog. mus rau tus ncej zoo ntawm lub solid-state relay. Ua tib zoo saib qhov tseeb qhov txawv thaum kuaj.
