Cov peev txheej ntawm EMI ntawm qhov hloov pauv hom hluav taws xob cuam tshuam kev daws teeb meem
1. shielding ntawm high-frequency transformer
Txhawm rau tiv thaiv kom tsis txhob muaj qhov xau ntawm high-frequency transformer magnetic cuam tshuam rau ib puag ncig Circuit Court, shielding daim kab xev tuaj yeem siv los tiv thaiv cov xau ntawm high-frequency transformer magnetic field. Shielding daim kab xev feem ntau yog ua los ntawm cov ntawv ci tooj liab, qhov txhab nyob ib ncig ntawm lub transformer sab nraum ib lub lim tiam, thiab grounding, shielding daim kab xev txheeb ze rau qhov xau teb yog ib lub voj luv luv, thiaj li tiv thaiv cov xau tawm hauv qhov dav.
Nyob rau hauv high-frequency transformers, txheeb ze displacements tshwm sim ntawm lub cores thiab nruab nrab ntawm cov windings, uas ua rau lub suab nrov (xws li, vibration) thaum lub sij hawm ua hauj lwm ntawm lub high-frequency transformer. Txhawm rau tiv thaiv cov suab nrov no, kev ntsuas qhov ntsuas yuav tsum tau ua rau lub tshuab hloov pauv:
(1) Bond peb qhov chaw sib cuag ntawm cov tub ntxhais (xws li, EE thiab EI cores) nrog epoxy resin txhawm rau txhawm rau cuam tshuam cov txheeb ze;
(2) nrog "iav hlaws dai" (iav hlaws dai) cov nplaum nplaum nplaum, cov nyhuv zoo dua.
Sib cais hais txog kev hloov hluav taws xob EMI kev tiv thaiv ntawm 9 ntsuas:
(1) tsim nyog PCB tsim
(2) tsim nyog daim ntawv thov ntawm varistors kom txo tau qhov surge voltage
(3) txo dv / dt thiab di / dt (txo nws lub ncov, qeeb nws txoj kab nqes)
(4) damping network los suppress overshoot
(5) Siv cov lim fais fab uas tsim nyog
(6) Kev siv cov diodes nrog cov yam ntxwv zoo rov qab los txo cov zaus band EMI
(7) Kev kho lub zog zoo, thiab lwm yam kev kho kom haum xeeb
(8) Kev tiv thaiv kev tiv thaiv zoo
(9) Tsim nyog grounding
