Tsuas yog tus neeg xyuas pib kuj tuaj yeem ntsuas nrog lub multimeter
Tus neeg xyuas pib / Insulator
Tus neeg xyuas pib: ib yam khoom siv hluav taws xob zoo
Insulators: cov khoom siv hluav taws xob tsis zoo (ceeb toom, tsis yog cov khoom uas tsis muaj hluav taws xob)
Cov khoom siv hauv peb lub neej yog: tooj liab, hlau, txhuas, kub, nyiaj, graphite, thiab lwm yam.
Cov insulators feem ntau hauv peb lub neej yog: yas, roj hmab, iav, ceramics, dej ntshiab, huab cua, ntau yam roj ntxhia ntuj, thiab lwm yam.
Ntawm no peb yuav tsum xyuam xim tshwj xeeb yog tias cov insulator yog cov khoom siv tsis zoo, tsis yog cov khoom siv hluav taws xob. Hais lus nruj me ntsis, tsis muaj cov khoom siv hluav taws xob kiag li. Plastics, piv txwv li, tuaj yeem punctured ntawm qhov kub thiab txias thiab yog li ua hluav taws xob. Yog li ntawd, cov insulators tau muab faib ua tsib qib raws li lawv qhov kub thiab txias: Y, A, E, B, F, H thiab C.
Ib yam li ntawd, cov insulators yuav raug punctured ntawm ntau dua voltages thiab yog li ua hluav taws xob. Yog li ntawd, lub insulator
Txawm hais tias tus neeg xyuas pib txheeb ze rau qee qhov voltage, qhov voltage hu ua insulator's rated voltage.
Raws li yog vim li cas, txawm tias cov hlau kub kub thiab qhov hluav taws xob tsis muaj ntau yam ua. Tom qab ntawd vim li cas nws tseem yuav tsum tau kos lub ntsuas hluav taws xob? Qhov no yog vim hais tias cov hlau sab nraud ntawm daim tawv nqaij insulating muaj ib tug voltage kam rau ua ntau yam. Peb tuaj yeem nkag siab yooj yim tias thaum cov dej siab tshaj qhov ntau ntawm cov kav dej, ces cov yeeb nkab yuav raug puas tsuaj, cov dej sab hauv yuav txau. Ib yam li ntawd, thaum qhov hluav taws xob ntawm cov xaim hluav taws xob ntau dua li qhov ntau ntawm cov tawv nqaij rwb thaiv tsev, cov hluav taws xob rwb thaiv tsev yuav raug rhuav tshem, tam sim no yuav khiav tawm, feem ntau hu ua "kua dej".
Lub multimeter yeej siv Ohm txoj cai los ntsuas qhov tsis kam. Peb txhua tus paub tias thaum ntsuas qhov tsis kam, lub multimeter yog siv los ntawm 1.5V thiab 9V roj teeb. Thaum ob lub cwjmem txuas nrog lub resistor, qhov tam sim no nyob rau hauv lub 'meter' pib los ntawm lub zoo davhlau ya nyob twg ntawm lub roj teeb, ces hla dhau lub meter taub hau, lub resistor, thiab ces rov qab mus rau qhov tsis zoo davhlau ya nyob twg ntawm lub roj teeb. Raws li qhov loj me tam sim no ntawm lub taub hau 'meter', koj tuaj yeem txiav txim qhov loj me me, vim tias qhov voltage yog qhov tseeb, qhov loj me tam sim no nyob ntawm qhov loj me me.
Rau kev ntsuas qhov tsis kam ntawm tus neeg xyuas pib, qhov no zoo kawg nkaus; Tab sis rau kev ntsuas lub insulator, nws yuav tsis ua hauj lwm, vim hais tias seb lub insulator conducts los yog tsis nyob ntawm qhov voltage thiab kub. Piv txwv li, ib tug insulator ntawm 9V tsis yog conductive, yog li thaum ntsuas nrog ib tug multimeter, lub 'meter' ib txwm tsis muaj tam sim no los ntawm lub taub hau, yog li cov zaub kuj yog infinite. Tab sis yog tias koj txuas ntxiv siv qhov hluav taws xob ntau dua, nws yuav ua rau kev puas tsuaj. Yog li thaum ntsuas seb lub insulator yog conductive los yog tsis, ib tug voltage yog teev.
