Diode iav thiab diode ntsuas txoj kev ntawm digital multimeter
Lub diode iav yog cov iav uas nquag siv. Feem ntau, cov iav no pom ntawm cov ntsuas ntsuas. Lub logo yog lub cim diode, thiab tej zaum yuav muaj lub cim zoo ib yam li "cim" nyob ib puag ncig nws. Yog xav paub meej, thov mus saib cov sawv cev hauv daim duab saum toj no.
Tig lub multimeter mus rau lub iav no kom pom tias lub cim "cim" uas tau hais los saum toj no tau tshwm sim ntawm lub vijtsam zaub (saib daim duab saum toj no). Qhov tseeb, qhov no yog buzzer iav. Yog tias qhov kev sojntsuam liab thiab dub luv luv, koj yuav hnov lub suab buzzer. Cov iav no tuaj yeem siv los ntsuas qhov kev tawm ntawm cov xov hlau, tab sis hnub no peb tab tom tham txog lwm qhov. Nias lub khawm hloov ntawm lub ntsuas hluav taws xob kom pom lub cim diode tshwm rau ntawm qhov screen.
Vim hais tias lub stylus liab ntawm lub ntsuas hluav taws xob yog txuas nrog tus ncej zoo ntawm cov khoom siv hluav taws xob sab hauv thiab cov stylus dub txuas nrog cov ncej tsis zoo ntawm cov khoom siv hluav taws xob sab hauv, thaum ntsuas lub diode nrog cov ntsuas digital, muab cov stylus liab rau ntawm zoo ncej ntawm lub diode thiab txuas cov dub stylus mus rau qhov tsis zoo ncej ntawm lub diode. Raws li ib txwm muaj, qhov zoo conduction voltage poob ntawm lub diode no yuav tshwm sim ntawm lub vijtsam zaub, piv txwv li, lub zog ntawm lub xeev poob ntawm lub diode no yog 0.607V hauv qab no.
Rau lub diode ib txwm, qhov kev poob qis tuaj yeem ntsuas tau, tab sis yog tias lub diode thim rov qab (lub stylus liab txuas nrog lub cathode ntawm diode thiab dub stylus txuas nrog lub anode ntawm diode), tsis muaj qhov tshwm sim tuaj yeem ua tau. ntsuas, yog li qhov zoo ntawm diode kuj tuaj yeem txiav txim los ntawm txoj kev no. Yog xav paub ntxiv, thov mus saib qhov ntsuas ntsuas hauv daim duab hauv qab no.
Lub diode yog ntsuas los ntawm kev siv lub raj rectifier zoo tib yam ua piv txwv. Qhov tseeb, txoj kev no tuaj yeem siv rau lwm hom diodes. Piv txwv li, qhov hluav taws xob poob ntawm LED teeb (lub teeb-emitting diodes) kuj tuaj yeem ntsuas los ntawm kev siv cov iav no.
Yuav ua li cas ntsuas qhov zoo thiab qhov tsis zoo ntawm diode nrog multimeter
1. Kuv tsis tuaj yeem pom cov qauv tshwj xeeb ntawm koj lub multimeter kom meej;
2. Nyob rau hauv dav dav digital multimeter, qhov ntsuas voltage ntawm diode iav yog tsawg dua 2V, tab sis koj ntsuas P6KE36, uas yog bidirectional diode. Qhov voltage ntawm diode iav ntawm no diode thiab multimeter yuav tsum yog tsawg kawg yog 6V ua ntej ntsuas, tab sis lub diode iav ntawm general multimeter tsis tuaj yeem ncav cuag qhov hluav taws xob no.
3. Txhawm rau muab nws yooj yim, nws tsuas yog ua tau los ntsuas qhov diode yog tias qhov hluav taws xob ntawm ob qhov kev sojntsuam ntawm lub diode siab tshaj 6V, thiab koj lub multimeter tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua;
4. Txhawm rau ntsuas qhov diode nrog koj lub multimeter, koj yuav tsum siv lub tshuab hluav taws xob tswj hluav taws xob nrog lub zog ntau dua 10V, txuas lub resistor hauv series, thiab tom qab ntawd txuas rau hauv series nrog lub diode no los ntsuas seb nws puas zoo lossis phem;
5. Raws li rau lub series tsis kam thiab lub zog tsis kam, nws yuav tsum tau txiav txim siab raws li qhov ua haujlwm tam sim no ntawm koj lub diode. Kuv tsis tuaj yeem muab ib qho kev suav rau koj ntawm no.
6. Vim tias qhov hluav taws xob ntawm lub diode ntawm koj lub multimeter tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua, qhov kev ntsuas qhov zoo thiab qhov tsis zoo tsis tuaj yeem ua tau, tab sis nws tsis tuaj yeem ua pov thawj tias lub diode bidirectional tawg.
7. Txhawm rau muab nws yooj yim, hom diode no tsis tuaj yeem ntsuas ncaj qha nrog lub diode ntau ntawm multimeter.
