Yuav Ua Li Cas Ntsuam Xyuas Cov Mob ntawm Relay nrog Digital Multimeter?
Los ntawm kev faib cov kauj ua ob ntu thiab siv cov thaiv thaiv, qhov kev tiv thaiv ntawm lub kauj tuaj yeem ntsuas tau yooj yim, feem ntau yog li ntawm kaum rau txhiab ohms. Nyob ntawm seb nws yog AC lossis DC, yuav muaj qhov sib txawv ntawm lub zog. Yog hais tias nws yog ib tug luv luv Circuit Court los yog luv luv Circuit Court, nws yog ib qho tseem ceeb burning lub kauj. Tom qab ntawd qhov kev sib txuas ib txwm qhib yog ntsuas nrog kev tiv thaiv thaiv, thiab nws yog qhov pib tsis kawg. Qhov kev sib txuas ib txwm raug kaw yog luv luv thaum ntsuas nrog qhov thaiv tiv thaiv. Yog hais tias qhov kev sib cuag muaj ib qho kev tiv thaiv, nws tseem tuaj yeem txiav txim siab tias lub relay tawg.
1. Ntsuas tus nqi DC tsis kam ntawm relay coil
Txoj kev ntsuas tus nqi DC tsis kam ntawm tus relay digitally zoo ib yam li tus pointer multimeter. Raws li qhov nominal DC tsis kam tus nqi ntawm relay, tso lub multimeter nyob rau hauv qhov tsim nyog kuj ntau yam thiab txuas ob qho tib si sojntsuam mus rau cov hlau lead tus pin ntawm relay kauj rau kev ntsuas, raws li qhia hauv daim duab. Sib piv cov qhab nia xeem nrog cov nqi nominal. Yog hais tias qhov yuam kev nyob rau hauv ± 10%, nws yog suav tias yog ib txwm; Yog tias tus nqi tiv thaiv qis dua, muaj qhov cuam tshuam hauv zos luv luv hauv lub kauj; Yog tias tus nqi tsis kam yog xoom, nws qhia tau tias lub kauj yog luv luv; Yog hais tias lub multimeter qhia lub cim overflow "1", nws qhia tau hais tias lub kauj yog qhib Circuit Court.
2. Ntsuas qhov nqus tam sim no
Txoj kev ntsuas qhov rub tawm tam sim no yog tib yam li tus pointer multimeter. Muab cov digital multimeter nyob rau hauv DC tam sim no 200mA ntau yam, txuas nws hauv series nrog relay coil, 5.1k Ω potentiometer, thiab 200 Ω resistor, thiab txuas lawv mus rau ob qhov kawg ntawm 20V DC.
Ua ntej ntsuas, ua ntej kho lub potentiometer rau qhov siab tshaj plaws tus nqi, tom qab ntawd tig rau ntawm DC fais fab hloov thiab maj mam kho lub potentiometer kom txo tau tus nqi kuj. Thaum lub relay tsuas yog tsim ib tug rub nyob rau hauv qhov kev txiav txim, tam sim no tus nqi tso tawm nyob rau hauv lub multimeter yog rub nyob rau hauv tam sim no ntawm relay.
3. Ntsuas qhov tso tawm tam sim no
Tom qab ntsuas qhov rub tawm tam sim no hauv cov kauj ruam dhau los, lub voj voog tseem tsis hloov pauv thiab txuas ntxiv ntsuas qhov tso tawm tam sim no. Thaum ntsuas, maj mam kho lub potentiometer kom nce tus nqi tiv thaiv thaum lub relay nyob rau hauv lub xeev kaw. Thaum lub relay thawj zaug tso tawm, tus nqi tam sim no tso tawm ntawm lub multimeter yog qhov tso tawm tam sim no ntawm relay.
4. Ntsuas qhov tiv thaiv tus nqi ntawm qhov chaw tiv tauj
Siv 200 Ω tsis kam ntau ntawm ib lub multimeter, ntsuas qhov kev tiv thaiv tus nqi ntawm ob qhov chaw kaw, feem ntau tso tawm ua ob peb ohms, raws li qhia hauv daim duab 4.97. Yog hais tias lub cim overflow "1" tshwm nyob rau ntawm lub vijtsam, nws qhia tau hais tias ob qhov kev sib tiv tauj raug txiav tawm.
Yog tias siv lub buzzer rau kev tshawb pom, lub multimeter yuav tsum tsis tsuas yog tso saib tus nqi tiv thaiv ntawm cov neeg raug kaw, tab sis kuj tawm suab buzzing tib lub sijhawm. Yog hais tias lub multimeter qhia cov cim overflow "1" thiab lub buzzer tsis suab, nws qhia tau hais tias tsis muaj kev sib txuas ntawm ob tus neeg raug kuaj.
