Cov kev daws teeb meem rau EMI kev cuam tshuam cov chaw cuam tshuam cuam tshuam rau cov khoom siv fais fab tuag
Feem ntau cov kev hais tawm sab nraud, ntsuas hluav taws xob, lossis sib xyaw ua ke ntawm cov khoom siv hluav taws xob xws li hloov kho cov pa hluav taws xob, thiab lwm yam hluav taws xob ib puag ncig.
Firstly, qhia cov kis tau cov kev cuam tshuam ntawm kev cuam tshuam hluav taws xob hluav taws xob
(1) nyob rau hauv hloov hom hwj huam, cov xaim hluav taws xob uas tuaj yeem tsim kho hluav taws xob, thiab tshuaj ntsuam siv hluav taws xob dipole thiab sib nqus dipole theories; Diodes, Capacitors, thiab fais fab hloov cov khoom siv tuaj yeem xav tias yuav hluav taws xob hluav taws xob tuaj yeem xav tias yog kev sib nqus dipoles;
(2) Thaum tsis muaj daim thaiv thaiv lub cev, tus mob hluav taws xob hauv hluav taws xob thiab hluav taws xob dipoles thiab cov ntxig hlau (uas tuaj yeem xav tias yog qhov chaw pub dawb);
(3) Thaum muaj lub cev thaiv npog, xav txog qhov khoob thiab cov qhov ntawm cov thaiv npog, thiab tshuaj xyuas thiab ua lawv cov qauv ntawm cov qauv xau.
Thib ob, nws yog kis tau cov kev sib kis rau kev ua kev cuam tshuam
(1) Tshuaj sib txuas
(2) inductive Coupling
(3) Kev Tiv Thaiv Coupling
a. Kuj yuav ua hauj lwm ua ke los ntawm sab hauv kev tiv thaiv ntawm pej xeem fais fab mov
b. Kuj zoo ua ke ua ke los ntawm kev cuam tshuam ntawm cov lag luam hauv av
c. Kuj zoo conduction coupling los ntawm impedance ntawm cov pej xeem kab
Cov hauv qab no yog cov qauv kev sib txuam muaj feem cuam tshuam txog EMI cuam tshuam rau EMI:
1. Tiv thaiv cov neeg hloov pauv siab
Txhawm rau tiv thaiv cov toast thaj teb ntawm cov hluav taws xob ntau dua los ntawm kev cuam tshuam nrog cov kais dej uas muaj peev xwm sib xyaw ntawm cov hluav taws xob sib nqus. Kev thaiv daim kab xev feem ntau yog ua los ntawm tooj liab ntawv ci, qhwv ib ncig ntawm sab nraud ntawm lub transformer thiab grounded. Daim ntaub thaiv daim ntaub yog lub voj voos luv luv sib piv rau lub ntsej muag tsis sib xws, yog li suppressing lub xau ntawm ntau ntawm cov dej khov.
Cov zog loj hloov pauv kev txheeb ze ntawm cov cores sib nqus ntawm cov sib nqus cores thiab windings, ua rau muaj suab nrov (whistling, kev co, thaum kev cai. Txhawm rau tiv thaiv lub suab nrov no, kev siv lub zog xav tau yuav tsum tau ua rau lub transformer:
(1) Siv Epoxy Resin kom muab peb qhov chaw sib tiv tauj ntawm cov hlau nplaum (xws li EE thiab EI cores) mus rau kev txheeb ze;
(2) siv "iav hlaws"
