Ukuqeda ukuphazamiseka kwe-electromagnetic (EMI) ku-PCB (ibhodi lesekethe eliphrintiwe) kungaba yinkimbinkimbi futhi kudinga izigaba ezimbalwa.Ezinye zalezi zinyathelo ezibaluleke kakhulu yilezi:
Khomba imithombo engaba khona ye-EMI:
Isinyathelo sokuqala ekuqedweni kwe-EMI ukukhomba imithombo engaba khona yokuphazamiseka.Lesi sinyathelo sibandakanya ukubheka ukwakheka kwesekethe nokuhlonza izakhi ezifana nama-oscillator, izilawuli ezishintshayo namasignali edijithali avame ukukhiqiza i-EMI.
Lungiselela ukubekwa kwengxenye:
Ukubeka izingxenye ku-PCB kuzinikeza inzuzo engcono kakhulu.Ukuvikela noma ukuhlunga izingxenye kusiza ukuhlukanisa amasekhethi azwelayo, noma kungase kudingeke uhambise izingxenye ukuze unciphise isikhala phakathi kwazo.
1. Sebenzisa izindlela ezifanele zokubeka phansi
Ukubeka phansi kubalulekile ukunciphisa i-EMI.Ukuze unciphise amandla e-EMI kufanele usebenzise indlela efanele yokubeka phansi.Lesi sinyathelo sihlanganisa ukusebenzisa indiza yaphansi ezinikele ukuhlukanisa amasignali e-analogue nedijithali, noma ukuxhuma izingxenye eziningi endizeni eyodwa yaphansi.
2. Sebenzisa ukuvikela nokuhlunga
Kwezinye izimo, izingxenye ezisetshenziselwa ukuvikela noma ukuhlunga zingasiza ukuqeda i-EMI.izingxenye zokuhlunga zisiza ukususa amaza angafuneki kusiginali, kuyilapho ukuvikela kungasiza ukuvimbela i-EMI ukuthi ifinyelele amasekhethi azwelayo.
3. Ukuhlola nokuqinisekisa
Ngemuva kokuthi umklamo usuthuthukisiwe, kufanele uqinisekise ukuthi uyisuse kahle i-EMI.lokhu kususwa kungase kudinge ukukala ukukhishwa kukazibuthe we-PCB ngomhlaziyi we-EMI, noma ukuhlola i-PCB esimweni somhlaba wangempela ukuze kuqinisekiswe ukuthi isebenza njengoba kuhleliwe.
Ihlola i-EMI kumiklamo ye-PCB
Ingabe udinga ukuhlola i-EMI ekwakhiweni kwakho kwe-PCB futhi uma kunjalo, imininingwane elandelayo kufanele ikusize uhambe.Ngemva kwalokho, uzofuna ukulandela izinyathelo ezilandelayo:
1. Chaza indlela yokuhlola
Chaza ububanzi befrikhwensi, izindlela zokuhlola kanye nemikhawulo.Izinga lomkhiqizo kufanele linqume indlela yokuhlola.
2. Imishini yokuhlola
Setha isamukeli se-EMI, ijeneretha yesiginali, i-spectrum analyzer ne-oscilloscope.Izinto zokusebenza kufanele zilinganiswe futhi ziqinisekiswe ngaphambi kokuhlolwa.
3. Lungisa i-PCB
Ngezinjongo zokuhlola, qiniseka ukuthi ufaka zonke izingxenye ngendlela efanele futhi unike amandla i-PCB ngendlela efanele ngokuyixhuma ezintweni zokuhlola.
4. Yenza ukuhlolwa kwe-radiated emission
Ukuze wenze ukuhlolwa kokukhipha imisebe, beka i-PCB ekamelweni le-anechoic futhi udlulise isignali ngejeneretha yesignali ngenkathi ukala ileveli yokukhipha imisebe ngesamukeli se-EMI.
5. Kwenziwa ukuhlolwa kwe-emission
Kwenziwa ukuhlolwa kokukhipha umoya ngokujova amasiginali emandleni nasezilayini zesignali ze-PCB, kuyilapho kukalwa ileveli yokukhipha eqhutshwa yisamukeli se-EMI.
6. Hlaziya imiphumela
Hlaziya imiphumela yokuhlolwa ukuze unqume ukuthi idizayini ye-PCB iyahlangabezana yini nemibandela yokuhlola.Uma imiphumela yokuhlolwa ingahlangabezani nemibandela, khomba umthombo wokukhishwa kwekhabhoni bese uthatha isinyathelo sokulungisa, njengokwengeza ukuvikela kwe-EMI noma ukuhlunga.
Iphrofayela Yenkampani
I-Zhejiang NeoDen Technology Co., Ltd. ibikhiqiza futhi ithumela kwamanye amazwe imishini emincane yokukhetha nendawo kusukela ngo-2010. Isebenzisa i-R&D yethu ecebile enokuhlangenwe nakho, ukukhiqizwa okuqeqeshwe kahle, i-NeoDen izuza idumela elihle kumakhasimende omhlaba wonke.
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Isikhathi sokuthumela: May-06-2023