(1) Daim ntawv pov thawj kev paub ntawm electroscope zoo heev. Lub raj neon tsis tawm lub teeb thaum lub cuab yeej kuaj xyuas, uas tsis txhais tau tias lub cuab yeej tsis muaj hluav taws xob. Yog tias qhov hluav taws xob AC qis dua 50V thiab DC voltage qis dua 90V, lub tshuab hluav taws xob tsis tawm lub teeb. Hluav taws xob poob siab tseem tuaj yeem tshwm sim thaum tib neeg lub cev kov lub cuab yeej, vim tias qhov kev nyab xeeb hluav taws xob yuav tsum qis dua 36V (kev sib txuas lus).
(2) Thaum ib tug neeg sawv ntawm cov ntaub qhwv insulating thiab xyuas 220V AC voltage nrog lub tshuab electroscope, lub raj neon ci ntsa iab; tab sis thaum ib tug neeg sawv hauv av nrog cov rwb thaiv tsev zoo heev thiab siv lub tshuab electroscope los xyuas qhov DC voltage siab tshaj qhov hluav taws xob hluav taws xob, lub raj neon tsis tawm lub teeb. Yog hais tias ib qho kawg ntawm DC fais fab mov yog grounded, lub neon raj glows.
(3) Thaum siv lub tshuab electroscope los xyuas cov ntaub ntawv hlau zoo heev uas tsis yog hauv av (txuas mus rau xoom), qee zaum lub raj neon tseem yuav tawm lub teeb tsis muaj zog. Qhov no yog vim qhov kev tiv thaiv ib puag ncig ntawm cov khoom siv hluav taws xob tsawg tsawg dua 1MΩ, thiab muaj qhov sib txawv loj ntawm lub plhaub ntawm qee cov khoom siv thiab cov neeg xyuas pib, thaum qhov kev txwv tam sim no ntawm electroscope yog 1 ~ 3MΩ, thiab leakage tam sim no dhau los ntawm cov rwb thaiv tsev tiv thaiv thiab cov kab hluav taws xob tawg. , tam sim no limiting resistor thiab tib neeg lub cev mus rau hauv av, qhov voltage ntxiv rau lub neon raj tshaj nws ignition voltage, yog li lub electroscope emits lub teeb. Vim tias cov dej xau tam sim no yog qib microampere, nws tsis muaj teeb meem rau tib neeg lub cev. Yuav tsis tsim ib qho teeb meem hluav taws xob. Txawm li cas los xij, yog tias lub raj neon ci dua, nws yuav yog vim tsis zoo ntawm cov khoom siv hluav taws xob, cov xau loj, thiab kev pheej hmoo ntawm hluav taws xob poob. Lub sijhawm no, siv lub megohmmeter lossis multimeter los kuaj xyuas cov txheej txheem rwb thaiv tsev ntawm cov khoom siv, thiab nws yuav tsum tsis txhob loog.
