Cov lus nug ntawm kev ntsuas los tiv thaiv EMI thaum tsim cov khoom siv hluav taws xob hloov
1. Tsawg kawg ntawm PCB tooj liab ntawv ci cheeb tsam ntawm lub suab nrov Circuit Court nodes; xws li cov dej ntws thiab cov khoom sib hloov ntawm cov raj hloov, cov ntawm cov thawj thiab theem nrab windings, thiab lwm yam.
2. Khaws cov tswv yim thiab cov khoom tso tawm kom deb ntawm cov suab nrov, xws li cov khoom siv hluav taws xob hloov hluav taws xob, cov khoom siv hluav taws xob hloov hluav taws xob, cov dab dej kub ntawm cov raj hloov pauv, thiab lwm yam.
3. Khaws cov khoom tsis muaj suab nrov (xws li cov khoom siv hluav taws xob 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 lub npoo ntawm rooj plaub, vim tias ntug ntawm rooj plaub yuav nyob ze rau sab nraud hauv av xaim nyob rau 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, khaws lub cev tiv thaiv thiab cov dab dej kub kom deb ntawm lub transformer.
5. Txo thaj tsam ntawm cov voj voog tam sim no kom ntau li ntau tau: theem nrab (tso tawm) 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 cov lus tawm tswv yim nrog cov thawj hloov hluav taws xob los yog cov khoom siv kho kom haum.
7. Kho thiab optimize qhov damping kuj tus nqi kom nws tsis tsim lub suab nrov thaum lub sij hawm tuag ntawm qhov hloov.
8. Tiv thaiv EMI lim inductor saturation.
9. Khaws lub voj voog thiab cov khoom ntawm lub voj voog thib ob kom deb ntawm cov ntaub thaiv npog ntawm thawj lub voj voog lossis lub dab dej kub ntawm lub raj hloov.
10. Khaws lub viav vias nodes thiab lub cev ntawm lub hauv paus Circuit Court kom deb ntawm cov ntaub thaiv npog lossis cov dab dej kub.
11. Ua lub lim EMI rau cov khoom siv ntau zaus nyob ze rau ntawm cov khoom siv cable lossis cov khoom txuas kawg.
12. Khaws lub lim EMI kom muaj qhov tso zis ntau zaus ze rau cov khoom siv hluav taws xob tso tawm.
13. Khaws ib qho kev ncua deb ntawm cov ntawv ci tooj liab ntawm PCB tawm tsam EMI lim thiab lub cev tiv thaiv.
14. Muab ib co resistors nyob rau hauv kab ntawm lub rectifier rau lub auxiliary coil.
15. Txuas lub damping resistor nyob rau hauv parallel ntawm lub kauj ntawm tus pas nrig sib nqus.
16. Txuas damping resistors nyob rau hauv parallel hla 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 yog kev cob cog rua ntawm 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 winding.
19. Yog hais tias thaj tsam PCB txaus, cov pins rau shielded winding thiab txoj hauj lwm rau RC damper tuaj yeem tso rau ntawm PCB, thiab RC damper tuaj yeem txuas mus rau ob qhov kawg ntawm cov shielded winding.
20. Yog tias qhov chaw tso cai, tso ib lub me me radial lead capacitor (Miller capacitor, 10 pF / 1 kV capacitor) ntawm qhov ntws thiab lub rooj vag ntawm lub zog hloov FET.
21. Muab RC damper me me rau ntawm DC tso zis yog tias qhov chaw tso cai.
22. Tsis txhob muab AC lub qhov (socket) ze rau ntawm lub dab dej kub ntawm lub qhov hluav taws xob hloov pauv.
