Qhov hloov ntawm digital multimeter tau tawg thiab tsis muaj qhov hloov pauv. Yuav ua li cas short-circuit nws?
6- tus pin hloov feem ntau yog siv hauv digital multimeters nrog kev ua haujlwm tsis siv neeg kaw. Cov qauv muaj xws li DT9205A, DT9208A, 890D, 890C+ thiab lwm yam qauv. Thaum lub hwj chim raug muab tua, lub hwj huam mov tsub lub capacitor; Thaum lub hwj chim qhib, lub capacitor tawm mus rau hauv av. Thaum lub flip txwv tau mus txog, yuav kaw;
Hom Circuit Court no muaj kev xav tau siab rau cov hluav taws xob hloov hluav taws xob. Hauv kev siv ib txwm muaj, yog tias nws siv tsis tu ncua, lub capacitor yuav raug muab tua thiab rov ua dua txhua 15 feeb los yog li ntawd, uas yuav ua rau poob ntawm kev hloov pauv sai, yog li qhov hloov pauv feem ntau yuav tsis ua haujlwm. Rau cov teeb meem nrog kev siv, feem ntau koj tsuas yog yuav tsum tau hloov qhov hloov. Yog tias tsis muaj qhov hloov pauv, koj tuaj yeem luv luv-circuit tus pins ntawm qhov hloov lossis tshem tawm qhov tsis siv neeg kaw ntawm multimeter.
Txoj kev tshwj xeeb yog: tsuas yog luv luv rau sab saum toj 4 pins ntawm qhov hloov.
Digital multimeter tsis ua haujlwm: Tsuas yog nias lub khawm hloov nrog koj txhais tes thiab cov zaub yuav nres. Leej twg tau ntsib qhov tshwm sim no? Yuav ua li cas? Lub multimeter tsis tso tawm, tab sis lub luv luv-circuit hloov qhia nws. Tias yog nws rau tam sim no!
Thaum lub digital multimeter's buzzer theem yog luv luv, vim li cas nws thiaj li tso saib 2 es tsis yog 0?
Kev sib cuag ntawm cov hlau lead jack tsis zoo, los yog qhov zoo ntawm cov hlau lead hlau tsis zoo. Ncaj qha luv luv rau qhov kuaj liab thiab dub qhov nrog tooj liab kom pom tias nws ncav cuag 0. Nws kuj yuav yog tias cov neeg sib cuag ntawm qhov hloov pauv hloov disk yog qias neeg. Ntxuav cov contacts ntawm lub turntable. , yog tias nws tseem tsis tau ua haujlwm tom qab ntxuav, nws yog qhov teeb meem hauv Circuit Court nrog lub ntsuas. Nws muaj qhov kho tau potentiometer uas tuaj yeem rov pib dua 0 txoj haujlwm.
Vim li cas lub multimeter tso saib 0 tom qab lub millivolt ntau yog luv luv?
Yog tias tsis yog luv luv, qhov hluav taws xob me me yuav tshwm sim vim yog induction lossis to tam sim no hauv lub ntsuas, uas yuav tshwm sim hauv mV ntau. Nyob rau hauv ib tug kuj loj ntau yam, vim hais tias cov voltage faib resistor thiab tus nqi voltage kuj me me, lawv yuav tsis tshwm sim.
