Multimeter's on-off gear's standard and operating process.
Txoj hauj lwm qhib-tawm yog hom kev ntsuas uas yuav luag txhua qhov multimeters muaj, thiab yog siv los ntsuas seb cov kab nyob rau lossis tawm (luv luv luv). Feem ntau, lub buzzer thiab LED teeb yog siv. Lub buzzer suab los yog lub teeb LED tig rau, qhia tias lub voj voog txuas nrog. Raws li pom nyob rau hauv daim duab, kos npe rau hauv lub thawv liab yog lub on-off iav ntawm lub multimeter.
On-off gear txoj cai
Thaum lub multimeter tig mus rau qhov chaw qhib-tawm, lub voj voog sab hauv uas txuas nrog yog: cov hlau lead kuaj dub txuas nrog tus ncej tsis zoo ntawm lub roj teeb sab hauv, tus ncej zoo ntawm lub roj teeb txuas nrog lub resistor me me. , thiab lwm qhov kawg ntawm cov resistor txuas nrog cov hlau kuaj liab. Internal chirping circuit tau txais lub teeb liab los ntawm tus resistor. Yog hais tias ob qhov kev xeem coj yog luv luv los yog qhov kev tiv thaiv ntawm lawv me me, ces qhov voltage ntawm tus trigger resistor nyob rau hauv lub 'meter' yog siab, yog li ua rau lub beep. Yog hais tias qhov kev tiv thaiv ntawm ob qhov kev xeem coj yog loj, ces qhov sib faib voltage ntawm lub sab hauv trigger resistor txuas nrog nyob rau hauv series yog heev me me, thiab lub beep yuav tsis tau triggered.
On-off file standard
Lub ntsiab txhais yog tias 80 ohms thiab hauv qab no yog conduction, txwv tsis pub nws yog tsis-conduction. Uas yog hais, txuas cov liab thiab dub xeem coj ntawm lub multimeter mus rau ob sab ntawm ib kab. Yog tias qhov kev tiv thaiv ntawm kab no qis dua 80 ohms, lub multimeter yuav ua suab nrov thiab xav tias cov kab no ua haujlwm.
