Noj cov khoom ntsuas los tiv thaiv EMI thaum tsim cov khoom siv hluav taws xob hloov
1, Txo qhov chaw ntawm PCB tooj liab ntawv ci ntawm cov nodes ntawm cov suab nrov circuits; Piv txwv li, cov dej ntws thiab cov khoom sib hloov ntawm cov hlab ntsha hloov, 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 yog zoo li yuav 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, Sim txo thaj tsam ntawm cov voj voog tam sim no: theem nrab (tso zis) rectifier, thawj lub zog hloov hluav taws xob, lub rooj vag (hauv paus) tsav kab, pab rectifier.
6, tsis txhob sib tov lub rooj vag (pem hauv ntej) tsav rov qab lub voj nrog lub hauv paus hloov hluav taws xob lossis 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 kev saturation ntawm EMI lim inductor.
9. Khaws lub kaum sab xis thiab cov khoom siv hluav taws xob thib ob kom deb ntawm lub hauv paus Circuit Court thaiv los yog lub raj hloov hluav taws xob.
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 cable lossis cov khoom siv 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 rooj plaub ntawm thaj chaw 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 lub shielding winding ntawm ob qho kawg.
20. Yog tias qhov chaw tso cai, muab ib txoj kab uas hla me me rau cov hlau lead capacitor nruab nrab ntawm qhov ntws thiab lub rooj vag ntawm lub zog hloov FET (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 raj hloov thawj zaug.
