Kev sib raug zoo ntawm cov rwb thaiv tsev muaj zog thiab rwb thaiv tsev tsis kam

Rwb thaiv tsev tsis kam hais txog qhov sib piv ntawm qhov kev tsim tawm tam sim no los ntawm kev dilict raws li cov lus qhia meej tau thov ntawm lub zog hluav taws xob thiab lub chaw nres tsheb hauv av. Nws chav yog Ohm. Lub rwb thaiv tsev muaj zog yog hais txog qhov ntau tshaj plaws thov ntawm cov hluav taws xob kab thiab lub chaw nres tsheb hauv av yam tsis muaj rwb thaiv tsev ntawm cov khoom siv. Chav tsev rwb thaiv tsev tsis kam yog OHM, thiab chav ntawm cov rwb thaiv tsev muaj zog yog volt. Qhov no yog heev intuitive. Txij li thaum ua kom tiav ntawm ob qho txawv, nws tsis tuaj yeem hais tias qhov ntau dua cov rwb thaiv tsev tsis kam, ntau dua nws cov rwb thaiv tsev rwb thaiv tsev.

Rwb thaiv tsev tsis kam hais txog cov khoom ntawm insulating cov khoom siv nws tus kheej. Nws tsuas yog conforms rau OHM txoj kev ntseeg. Txoj kev ntsuas ntsuas yog txhawm rau thov voltage u, ntsuas qhov tam sim no kuv ntws mus los ntawm nws, thiab tom qab ntawd laij cov rwb thaiv tsev tsis kam r {}} u / i.

Lub rwb thaiv tsev tsis kam r tsis muaj dab tsi ua rau qhov loj ntawm cov ntawv siv voltage. Yog lawm, yog tias tus voltage loj dhau lawm, nws yuav ua rau cov khoom siv rwb thaiv tsev kom tawg thiab. Yog li nws tau hais tias nws yog ywj siab ntawm voltage nyob rau hauv qee qhov kev mob (tsis muaj kev tawg lawm). Yog hais tias cov ntawv siv voltage loj dhau lawm, nws tsis tuaj yeem hais tias lub rwb thaiv tsev tsis muaj dab tsi uas yog ua rau voltage.

Lub rwb thaiv tsev tsis kam ntawm insulating cov ntaub ntawv muaj feem xyuam rau ntau yam, xws li cov khoom siv noo, thiab tseem mus rau lub sijhawm voltage, qhov zaus ntawm lub voltage, lub sijhawm thiab lwm yam kev mob. Lub rwb thaiv tsev lub zog ntawm cov ntaub ntawv insulating yog hais txog nws lub peev xwm los tiv thaiv voltage lossis hluav taws xob teb lub zog. Ib qho hluav taws xob tau thov rau cov qauv khoom siv insulating, thiab lub voltage yog maj mam nce mus txog thaum lub rwb thaiv tsev raug puas lossis tawg. Qhov no yog hu ua nws qhov kev rhuav tshem voltage. Qhov no faib los ntawm lub electrode tej zaum kom tau txais hluav taws xob teb lub zog, uas yog nws kev puas tsuaj teb lub zog.

Yog li ntawd, cov rwb thaiv tsev muaj peev xwm yuav yog hu ua hluav taws xob lub zog lossis kev sib txig tsis zoo.

Ntawm chav kawm, lub zog tawg thiab rhuav tshem hluavtever yog cuam tshuam tsis tsuas yog rau cov duab ntawm electrode, lossis cov ris tsho hluav taws xob ntawm hluav taws xob thiab lwm yam. Yog li ntawd, cov rwb thaiv tsev tsis kam thiab rwb thaiv tsev lub zog ntawm cov ntaub ntawv insulating yog ob qho tsis muaj lossis cov ntsiab lus nrog cov ntsiab lus sib txawv. Lawv tsis muaj kev sib raug zoo ncaj qha. Lub rwb thaiv tsev loj tsis yog tias lub rwb thaiv tsev siab.

Cia peb coj ib qho piv txwv li no piv txwv tias:

Ib qho huab cua huab cua me me heev, xws li 1mm, muaj lub rwb rasfulation tsis txaus, uas yog infinite loj, tab sis qhov tawg voltage ntawm qhov sib txawv me me no tsis loj.

Ib daim ntawm insulating ntawv yog yuag heev, thiab nws rwb thaiv tsev tsis kam kuj tseem loj heev, tab sis nws tau tawg heev, tab sis nws puas yog ob peb puas lossis ntau txhiab volts.

Thiab ib daim ntoo ntev ntev, xws li 1 meter ntev, thaum nws xau rau qee yam, tab sis nws impulse ua tsis zoo yog tseem heev siab.