Kev ntsuas los tiv thaiv EMI thaum tsim cov khoom siv hluav taws xob hloov pauv
1. Ua kom tsawg kawg ntawm PCB tooj liab ntawv ci cheeb tsam ntawm lub suab nrov Circuit Court nodes kom loj tshaj qhov ua tau; Xws li cov dej ntws thiab cov khoom siv ntawm lub raj hloov, cov nodes ntawm thawj winding, thiab lwm yam.
2. Khaws cov tswv yim thiab cov zis tawm kom deb ntawm cov khoom nrov nrov xws li cov khoom siv hluav taws xob hloov hluav taws xob, cov khoom siv hluav taws xob hloov hluav taws xob, cov hluav taws kub dissipation fins ntawm cov raj hloov, thiab lwm yam.
3. Khaws cov khoom nrov nrov (xws li cov pob khoom tsis muaj hluav taws xob tsis muaj hluav taws xob, cov khoom siv hluav taws xob tsis muaj hluav taws xob, thiab cov raj hloov hluav taws xob, thiab lwm yam) kom deb ntawm ntug ntawm lub qhov rooj kaw, vim tias ntug ntawm lub qhov rooj kaw yuav nyob ze rau cov xaim hauv av sab nraud hauv ib txwm muaj. kev ua haujlwm.
4. Yog tias lub tshuab hluav taws xob tsis siv hluav taws xob tiv thaiv hluav taws xob, ua kom lub cev tiv thaiv lub cev thiab cov cua kub dissipation fins deb ntawm lub transformer.
5. Txo cov cheeb tsam ntawm cov voj voog tam sim no kom ntau li ntau tau: cov khoom siv hluav taws xob theem nrab (tso zis) rectifiers, thawj cov khoom siv hluav taws xob hloov hluav taws xob, lub rooj vag (hauv paus) tsav circuits, thiab cov khoom siv hluav taws xob.
6. Tsis txhob sib xyaw cov lus tawm tswv yim ntawm lub rooj vag (pem hauv ntej) nrog lub hauv paus hloov hluav taws xob lossis lub koom haum rectifier Circuit Court.
7. Kho thiab ua kom zoo dua tus nqi damping resistance kom nws tsis tsim lub suab nrov thaum lub sijhawm tuag ntawm qhov hloov.
8. Tiv thaiv EMI filtering inductance saturation.
9. Khaws cov bending nodes thiab cov khoom ntawm lub thib ob Circuit Court deb ntawm lub shielding lub cev ntawm lub hauv paus Circuit Court los yog lub tshav kub dab dej ntawm lub hloov raj.
10. Khaws lub viav vias nodes thiab cov khoom siv ntawm lub hauv paus Circuit Court kom deb ntawm kev tiv thaiv los yog cov cua kub dissipation fins.
11. Muab lub tshuab lim EMI rau cov khoom siv ntau zaus ze rau ntawm cov khoom siv hluav taws xob lossis cov khoom txuas kawg.
12. Khaws lub lim EMI nrog cov zis ntau zaus ze rau ntawm qhov tso zis hlau davhlau ya nyob twg.
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 ib co resistors rau ntawm lub rectifier Circuit Court ntawm lub auxiliary coil.
15. Txuas damping resistors nyob rau hauv parallel ntawm lub magnetic pas nrig coil.
16. Txuas damping resistors nyob rau hauv parallel ntawm ob qhov kawg ntawm cov zis RF lim.
17. Hauv PCB tsim, nws tso cai rau tso 1nF / 500V ceramic capacitors los yog ib tug series ntawm resistors, uas yuav tsum tau kev cob cog rua ntawm tus thawj static kawg ntawm lub transformer thiab lub auxiliary winding.
18. Khaws lub lim EMI kom deb ntawm lub hwj chim transformer; Tshwj xeeb tshaj yog tsis txhob muab tso rau ntawm qhov kawg ntawm lub wrapping.
19. Thaum lub PCB cheeb tsam txaus, ib ko taw txoj hauj lwm rau tso lub shielding winding thiab ib txoj hauj lwm rau tso RC damper tuaj yeem tso rau ntawm PCB. Lub RC damper tuaj yeem txuas nrog hla ob qhov kawg ntawm kev tiv thaiv winding.
20. Yog tias qhov chaw tso cai, tso ib lub me me radial lead capacitor (Miller capacitor, 10 pF / 1kV capacitor) nruab nrab ntawm qhov ntws thiab lub rooj vag ntawm qhov hloov hluav taws xob teb-tshuaj cuam tshuam transistor.
21. Yog tias qhov chaw tso cai, tso lub RC damper me me ntawm DC tso zis kawg.
22. Tsis txhob ntswj lub qhov (socket) AC tiv thaiv lub dab dej kub ntawm lub raj hloov thawj.
