Yuav ua li cas ntsuas qhov zoo ntawm solid-state relay nrog digital multimeter
Thaum peb txheeb xyuas qhov zoo ntawm cov khoom hauv lub xeev relay, 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 xyuas zoo li qub, peb tuaj yeem txuas qhov hloov kho DC qhov hluav taws xob los ntawm 3V txog 32V rau nws lub davhlau ya nyob twg tswj. Nyob rau lub sijhawm no, peb yuav tsum saib seb lub LED puas tuaj yeem tawm lub teeb ib txwm. Nyob rau lub sijhawm no, peb yuav tsum tau xyuam xim rau qhov tso zis davhlau ya nyob twg tsis txuas nrog lub thauj khoom lossis lub zog hluav taws xob.
Cov kauj ruam thib ob yog ua haujlwm raws li hauv qab no: lub sijhawm no, peb tuaj yeem siv tus pointer multimeter RX1K txhawm rau txheeb xyuas cov zis tsis kam. Yog hais tias lub input tswj voltage UI tsawg dua UI<2.7V, the resistance indicated by the multimeter should be infinite, in other words, the output 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 turned on.
Thaum kawg, qhov thib peb kauj ruam: tom qab thawj ob qhov kev sim yog qhov qub, peb tuaj yeem txuas cov khoom thauj thiab lub zog. Thaum lub input voltage yog 0V, lub load yuav tsis ua hauj lwm. Thaum lub input davhlau ya nyob twg voltage nce mus txog 5V, lub load tuaj yeem ua haujlwm. Lub sij hawm no, nws qhia tau hais tias cov khoom hauv lub xeev relay nyob rau hauv zoo, txwv tsis pub lub xeev relay yog faulty thiab yuav tsum tau kho.
Yuav ntsuas qhov zoo ntawm lub xeev relay li cas
Ntawm lub plhaub ntawm AC lub xeev relay, lub INPUT terminals feem ntau yog cim nrog cov lus "ntxiv rau ","-" thiab "input", thaum cov zis terminals tsis zoo lossis tsis zoo, tab sis qee cov khoom siv tau cim nrog cov lus "LOAD ". Rau DC cov khoom hauv lub xeev relays, INput thiab OUTput terminals feem ntau yog cim nrog "ntxiv" thiab "-", thiab qee cov khoom siv kuj tau cim nrog cov lus "hauv" thiab "tawm" los qhia qhov txawv.
Thaum cov multimeter digital siv los ntsuas qhov sib txawv ntawm qhov nkag thiab lub davhlau ya nyob twg, cov ntaub ntawv diode tuaj yeem siv los ntsuas plaub tus pins nyob rau pem hauv ntej thiab rov qab cov lus qhia raws li qhov voltage ntawm ob tus pins tuaj yeem ntsuas kom haum. Txoj cai lij choj ntawm kev xa mus rau pem hauv ntej thiab rov qab txiav tawm, uas yog, "1.3 ~ 1.6V" yog tso tawm nyob rau hauv kev ntsuas rau pem hauv ntej, thiab lub cim overflow "1" tshwm nyob rau hauv qhov kev xeem rov qab. Raws li qhov no, nws tuaj yeem txiav txim siab tias ob tus pins no yog cov khoom siv nkag, thiab hauv kev ntsuas rau pem hauv ntej, qhov ntsuas ntawm "1.3 ~ 1.6V" tau tshwm sim, thiab cov stylus liab txuas nrog rau qhov zoo electrode, thaum lub stylus dub yog. txuas nrog qhov tsis zoo electrode. Rau DC solid-state relay, tom qab nrhiav tau lub input davhlau ya nyob twg, lub anode thiab cathode 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 qhov tso zis kawg, thiab qhov zoo electrode ntawm lub raj tiv thaiv yog txuas nrog cov electrode tsis zoo ntawm cov khoom-state diode, thiab qhov tsis zoo electrode ntawm lub raj tiv thaiv yog. txuas nrog qhov zoo electrode ntawm solid-state relay. Ua tib zoo saib qhov tseeb qhov txawv thaum kuaj.
