Multimeter hloov thiab hloov qhov chaw txoj kev
Hais txog kev hloov kho thiab qhov hloov pauv txoj hauv kev ntawm multimeter, kev hloov kho txhua hnub thiab kev saib xyuas ntawm multimeter, nrog rau kev hloov kho ntawm DC tam sim no, DC qhov hluav taws xob, qhov AC voltage thiab qhov tsis kam ntawm multimeter.
Multimeter Repair thiab Parts Replacement
1. DC tam sim no ib feem
Lub txav coil yuav tsum raug ntsia kom raug, thiab yuav tsum tsis txhob muaj cov tshuaj ferromagnetic hauv qhov sib txawv txav. Yog hais tias lub shunt resistor raug hlawv, nws yuav tsum tau hloov raws li tus nqi cim nyob rau hauv daim duab Circuit Court.
Yog hais tias qhov rhiab heev ntawm lub taub hau ntawm lub 'meter' siab, nws tuaj yeem demagnetized, cov plaub hau tuaj yeem hloov tau, lossis cov kauj nres tuaj yeem rov ua dua.
Ntxuav cov hloov pauv hloov pauv cov neeg sib cuag, desoldering lossis rov ua dua ntawm virtual soldering.
2. DC voltage ib feem
Kev hloov kho ntawm DC voltage Circuit Court tsuas tuaj yeem ua tiav tom qab kev hloov kho tam sim no. Thaum lub sij hawm hloov kho, nws yog nqa tawm ib kauj ruam los ntawm kauj ruam los ntawm kev txwv me me mus rau qhov loj ntawm qhov txwv. Qhov kev tiv thaiv feem ntau cuam tshuam nrog DC tam sim no tsis tuaj yeem hloov kho ntxiv lawm.
3. AC voltage ib feem
Kev hloov kho ntawm AC voltage feem ntau yog nyob rau hauv cov khoom siv rectifier, xws li kev puas tsuaj, kev puas tsuaj, thiab kev thim rov qab ntawm cov khoom rectifier. Thaum hloov, xaiv ib lub raj nrog ze rau cov yam ntxwv qub. Ib yam li ntawd, txhua yam ntsig txog DC tam sim no thiab DC voltage tsis tuaj yeem rov pib dua.
4. Resistor ib feem
Hloov lub roj teeb yog tias nws qis. Ntxuav cov ntsiab lus tiv tauj yog tias lawv xeb. Nws yog ib qho tsim nyog yuav tsum maj mam xuab zeb nrog cov ntawv xuab zeb zoo thiab ntxiv Vaseline thinly.
Lub electromagnetic clip yuav tsum muaj txaus elasticity. Thaum kho, pib ntawm R * 1 iav mus rau qhov siab tshaj plaws iav. Ib qho kev tiv thaiv uas cuam tshuam rau lub voj voog tam sim no thiab voltage tsis raug tso cai
