Yog vim li cas thiab kev ntsuas rau Electromagnetic Leakage nyob rau hauv Shielding Room Gaps

Kev tiv thaiv zoo ntawm lub cev tiv thaiv tuaj yeem sawv cev los ntawm kev tiv thaiv coefficient lossis shielding attenuation. Hauv thaj chaw tiv thaiv, qhov sib piv ntawm lub zog teb (E{{0}}} lossis H0) nyob rau hauv lub xub ntiag ntawm daim ntaub thaiv rau lub zog teb (E lossis H) thaum tsis muaj daim thaiv, piv txwv li E0/H0 lossis H0/H, yog hu ua shielding coefficient. Qhov me me ntawm shielding coefficient, qhov zoo dua cov nyhuv shielding. Cov nyhuv shielding kuj tuaj yeem sawv cev los ntawm shielding attenuation, uas sawv cev rau tus nqi attenuation ntawm kev cuam tshuam lub zog los ntawm kev tiv thaiv lub cev. Lub shielding attenuation tuaj yeem tau los ntawm lossis - unit decibels (dB). Qhov loj dua tus nqi shielding attenuation, qhov zoo dua cov nyhuv shielding.
Yog vim li cas rau electromagnetic to nyob rau hauv qhov khoob ntawm lub shielding chav:
Impedance ntawm qhov sib txawv: Lub impedance ntawm qhov sib txawv tuaj yeem sib npaug ntawm cov resistor thiab capacitor nyob rau hauv parallel, vim hais tias qhov taw tes ntawm kev sib cuag yog sib npaug rau cov resistor, thiab lub ntsiab lus tsis sib cuag yog sib npaug rau lub capacitor. Tag nrho qhov sib txawv yog ib qho kev sib txuas ntawm ntau cov resistors thiab capacitors. Ntawm qhov tsawg zaus, cov khoom tiv thaiv kuj plays lub luag haujlwm tseem ceeb; Nyob rau hauv high zaus, lub capacitive tivthaiv plays lub luag haujlwm tseem ceeb. Vim tias qhov txo qis ntawm capacitance impedance nrog nce zaus, yog tias qhov sib txawv yog qhov tseem ceeb ntawm qhov xau, qhov kev tiv thaiv kev ua tau zoo ntawm cov ntaub thaiv npog yuav nce ntxiv nrog kev nce zaus. Txawm li cas los xij, yog tias qhov luaj li cas ntawm qhov sib txawv loj, qhov sib txawv loj heev kuj yog qhov tshwm sim tseem ceeb ntawm qhov sib txawv.
Kev ntsuas los daws qhov tsis sib xws:
1. Qhov chaw sib tshooj ntawm qhov chaw sib cuag tuaj yeem txo qhov tsis kam thiab ua kom muaj peev xwm.
2. Siv ntau fastening screws li sai tau, uas tuaj yeem txo qhov tsis kam thiab ua kom muaj peev xwm.
3. Ua raws li kev sib cuag ntawm qhov chaw thiab txo kev tiv thaiv.
4. Ua raws li qhov zoo ntawm qhov chaw sib cuag, uas tuaj yeem txo qhov tsis kam thiab ua kom muaj peev xwm.
5. Siv electromagnetic sealing los kaw qhov khoob, tshem tawm qhov ua rau electromagnetic to ntawm qhov khoob thiab tshem tawm cov ntsiab lus tsis sib cuag.