Siv cov khoom lag luam los tiv thaiv EMI thaum tsim cov khoom siv hluav taws xob hloov.
1. Txo qhov cheeb tsam ntawm PCB tooj liab ntawv ci ntawm cov nodes ntawm cov suab nrov circuits; Piv txwv li, cov dej ntws thiab cov khoom siv ntawm cov hlab hloov pauv, cov nodes ntawm thawj thiab theem nrab windings, thiab lwm yam.
2, kom cov input thiab output terminals deb ntawm lub suab nrov Cheebtsam, xws li transformer hlau packs, transformer cores, switching tube kub dab dej, thiab hais txog.
3, kom lub suab nrov (xws li unshielded transformer xaim packs, unshielded transformer cores, thiab switching tubes, thiab lwm yam) deb ntawm lub ntug ntawm lub enclosure, vim hais tias nyob rau hauv ib txwm ua hauj lwm lub ntug ntawm lub enclosure yuav zoo li nyob ze ntawm lub enclosure. sab nraum grounding hlau.
4, Yog tias lub tshuab hluav taws xob tsis siv hluav taws xob tiv thaiv hluav taws xob, khaws cov ntaub thaiv npog thiab cov dab dej kub kom deb ntawm lub transformer.
5, txo qhov chaw ntawm cov voj voog tam sim no: theem nrab (tso zis) rectifiers, thawj cov khoom siv hluav taws xob hloov hluav taws xob, lub rooj vag (hauv paus) cov kab tsav, thiab cov khoom siv hluav taws xob.
6, tsis txhob sib tov lub rooj vag (pem hauv ntej) tsav rov qab lub voj nrog cov thawj hloov hluav taws xob los yog pab pawg rectifier Circuit Court.
7. Kho thiab ua kom zoo dua tus nqi ntawm cov damping resistor kom nws tsis tsim lub suab nrov thaum lub sijhawm tuag ntawm qhov hloov.
8. Tiv thaiv saturation ntawm EMI lim inductor.
9. Khaws cov ces kaum thiab cov khoom siv hluav taws xob thib ob kom deb ntawm lub hauv paus hluav taws xob thaiv hluav taws xob lossis hloov lub raj cua kub dab dej.
10. Khaws cov nodes thiab cov khoom ntawm lub hauv paus Circuit Court lub viav vias lub cev kom deb ntawm cov ntaub thaiv npog los yog lub dab dej kub.
11. Khaws cov khoom siv ntau zaus EMI cov ntxaij lim dej ze rau ntawm cov khoom siv hluav taws xob lossis cov khoom sib txuas.
12. Khaws cov zis ntau zaus EMI lim ze rau cov zis hlau terminals.
13. Khaws ib qho kev ncua deb ntawm cov ntawv ci tooj liab ntawm lub rooj tsav xwm PCB tawm tsam EMI lim thiab lub cev tiv thaiv.
14. Muab qee cov resistors rau ntawm txoj kab ntawm lub rectifier ntawm cov auxiliary coil.
15. Txuas damping resistors nyob rau hauv parallel ntawm lub magnetic bar kauj.
16. Txuas damping resistors nyob rau hauv parallel ntawm ob qhov kawg ntawm cov zis RF lim.
17. Tso cai rau 1nF/500V ceramic capacitor los yog cov resistors nyob rau hauv qhov zoo li qub kawg ntawm lub transformer thawj thiab auxiliary windings hauv PCB tsim.
18. Khaws lub lim EMI kom deb ntawm lub hwj chim transformer; tshwj xeeb, tsis txhob muab tso rau hauv qhov kawg ntawm winding.
19. Nyob rau hauv cov ntaub ntawv ntawm cheeb tsam PCB txaus, tuaj yeem tso rau ntawm PCB los muab cov ntaub thaiv npog nrog cov ko taw thiab muab RC damper txoj hauj lwm, RC damper tuaj yeem txuas nrog hla cov shielding windings ntawm ob qho kawg.
20. Yog hais tias qhov chaw tso cai, nyob rau hauv lub switching fais fab FET ntws thiab rooj vag ntawm ib tug me me txoj kab uas hla mus rau cov hlau lead capacitor (Miller capacitance, 10 picofarads / 1 kV capacitance).
21. Muab RC damper me me rau ntawm DC tso zis yog tias qhov chaw tso cai.
22. Tsis txhob tso lub qhov (socket) AC tiv thaiv lub dab dej kub ntawm lub qhov hluav taws xob hloov pauv.
