Multimeter tsis ua hauj lwm thiab yog vim li cas
Lub multimeter yog siv nyob rau hauv ntau zaus thiab siv ntau zaus, thiab cov nram qab no faults thiab ua rau feem ntau tshwm sim:
1. Tsis muaj qhov qhia txog DC tam sim no iav. Lub taub hau ' meter ' yuav luv luv lossis qhib, qhov kev tiv thaiv txuas nrog hauv cov 'meter' lub taub hau yog puas lossis desoldered; cov kauj ruam hloov tsis zoo;
2. Tsis muaj qhov qhia txog DC voltage. Kev sib cuag ntawm qhov hloov pauv hauv qhov hluav taws xob yog unsoldered, qhov kev tiv thaiv ntxiv ntawm qhov tsawg kawg nkaus yog txiav los yog puas; qhov hloov pauv hloov tsis zoo, thiab lwm yam;
3. AC voltage iav tsis ua hauj lwm. Qhov taw qhia tus nqi yog me me los yog kev nyeem ntawv yog ib nrab me me, thiab lwm yam, qhia tias cov khoom siv rectifier hauv lub rooj yog puas lossis tawg;
4. Tsis muaj qhov taw qhia thaum ntsuas qhov tsis kam. Cov hlau lead ntawm qhov sib txuas ntawm qhov hloov pauv hloov tau raug txiav, lub roj teeb tsis ua haujlwm, qhov xoom taw tes hloov pauv potentiometer puas, thiab lwm yam, thiab qee qhov ntau yog thaiv, uas yog vim qhov kev sib cuag ntawm qhov hloov pauv hloov tsis zoo. , los yog series kuj yog disconnected, thiab lwm yam.
Qee lub sij hawm lub magnetoelectric saib lub taub hau puas lawm vim tsis saib xyuas thaum siv, xws li misalignment ntawm hairspring, mechanical imbalance, coil disconnection, thiab lwm yam., qhov taw qhia yog txawv txav, ob txhais tes yog wobbly, thiab qhov yuam kev loj heev.
