Kufanele wazi ngomthetho we-20H ekwakhiweni kwe-PCB. Lo mthetho uthi umkhawulo wendiza yamandla kumele ube kude nomkhawulo wesendlalelo sesignali. Kufanele okungenani ube kude ngokuphindwe kabili ukuphakama kwe-dielectric. Lokhu kusiza ukwehlisa ukuphazamiseka kwe-electromagnetic. Kwenza futhi ubuqotho besignali bube ngcono. Ukusebenzisa umthetho we-20H kugcina amasekethe akho ethule. Kuwenza futhi asebenze kahle futhi ahlale ethembekile.
Izitoreji Eziyinhloko
Umthetho we-20H uthi umkhawulo wendiza yamandla kufanele ube kude nomkhawulo wendiza yasemhlabeni. Kumelwe ube kude okungenani izikhathi ezingamashumi amabili ukuphakama kwe-dielectric. Lesi sikhala sisiza ekumiseni ukuphazamiseka kwe-electromagnetic. Futhi senza amasignali abe ngcono.
Ukusebenzisa umthetho we-20H kusiza i-PCB yakho ukuthi iphumelele ukuhlolwa kwe-EMI. Kugcina amasimu kagesi ngaphakathi ebhodini. Lokhu kunciphisa amathuba okuba izimpawu ezimbi zilimaze indlela ibhodi elisebenza ngayo.
Umthetho we-20H wenza ikhwalithi yesignali ibe ngcono. Unciphisa umsindo kanye nokungalungi. Lokhu kusiza amasignali asheshayo ukuthi ahambe kahle kwi-PCB.
Ukufakwa kahle kanye nokuhlelwa kubalulekile uma usebenzisa umthetho we-20H. Umklamo ohlakaniphile ugcina isikhala esifanele. Futhi wenza ibhodi lisebenze kangcono futhi lihlale isikhathi eside.
Hlola njalo PCB design ngemva kokusebenzisa umthetho we-20H. Lokhu kuhlola ukuthi umklamo usebenza kahle yini. Kukusiza ukuthola nokulungisa izinkinga kusenesikhathi.
Umthetho wamahora angama-20 kumklamo we-PCB
Incazelo ye-20H
Ungase ubuze ukuthi umthetho we-20H uyini ekwakhiweni kwe-pcb. Umthetho we-20H uyisiqondiso esisiza ekumiseni ukuphazamiseka kwe-electromagnetic ebhodini lakho. Uthi kufanele ugcine umkhawulo wendiza yakho yamandla okungenani izikhathi ezingamashumi amabili ukuphakama kwengqimba ye-dielectric kude nomngcele wendiza yomhlaba. Lesi sikhala sibalulekile ngoba sinciphisa amathuba ezignali ezingafuneki ezishiya imiphetho yakho ye-pcb. Uma usebenzisa isimiso se-20H, ugcina insimu kagesi ngaphakathi kwebhodi. Lokhu kwenza umklamo wakho usebenze kangcono futhi kugcina amasekethe akho esebenza kahle. Umthetho we-20H uwusizo kakhulu uma usebenzisa izignali zesivinini esiphezulu noma izinguquko zamanje ezisheshayo, njengalapho isikhathi sokukhuphuka noma sokuwa singaphansi kwe-nanosecond eyi-1.
Ithiphu: Uma ufuna i-crosstalk encane kanye nokuhambisana okungcono kwe-electromagnetic, bheka njalo isikhala esiphakathi kwamandla akho kanye nezindiza zomhlaba. Umthetho we-20H uyindlela elula yokuhlola lokhu.
Umsuka kanye Nenhloso
Umthetho we-20H awuzange wenziwe ngengozi. UW. Michael King waqala ukwabelana ngalo mbono ngo-1980. Kamuva, uMark I. Meltrose wachaza kabanzi encwadini yakhe. Onjiniyela abaningi manje basebenzisa lo mthetho njengengxenye evamile yomklamo we-emi. Usebenzisa umthetho we-20H ukulungisa izinkinga ezenzeka kumklamo wesimanje we-pcb. Nazi ezinye zezinkinga eziyinhloko ezisiza ngazo:
It kusiza ukwehlisa ukuphazamiseka kwe-electromagnetic, okuba kubi kakhulu njengoba imvamisa yokusebenza kwakho ikhuphuka.
Ungayisebenzisa njengendlela elula yokunciphisa ama-emi kumaphrojekthi e-pcb asheshayo.
Lo mthetho uhlolwe ngedatha yangempela kanye namamodeli ekhompyutha, okubonisa ukuthi usebenza kahle ekumiseni amasignali angafuneki.
Uzobona nokuthi amazinga emboni akhuluma ngomthetho we-20H. Lezi zindinganiso zithi kufanele ugcine isikhala phakathi kwezimpawu zesivinini esikhulu kanye nendiza yokubhekisela okungenani izikhathi ezingamashumi amabili ukuphakama kwezimpawu ngaphezu kwendiza. Lokhu kukusiza ukuthi uyeke ukukhuluma futhi kugcine i-pcb yakho isebenza kahle. Umgomo we-20H uphinde uthi ukugcina isikhala esanele phakathi kwesendlalelo samandla kanye nesendlalelo somhlabathi. Ngokwenza lokhu, umisa imisebe yomphetho futhi wenza umklamo wakho ube ngcono ukuze uvumelane ne-electromagnetic.
Kungani i-20H Ibalulekile kwi-PCB
Ukwehliswa kwe-EMI
Ufuna i-pcb yakho iphumelele ukuhlolwa kokuphazamiseka kwe-electromagnetic. Umthetho wamahora angama-20 uyakusiza ukwenza lokhu. Uma ulandela umthetho wamahora angama-20, ugcina unqenqema lwendiza yamandla kude nonqenqema lwendiza yasemhlabeni. Lesi sikhala sivimba amasimu kagesi aqinile ukuthi angaphumi ebhodini. Ubona ama-emi amancane ngoba amasimu awafinyeleli ngaphandle.
Ithebula elingezansi libonisa ukuthi umthetho wamahora angama-20 wehlisa kanjani ukukhishwa kwemisebe kumabhodi anezingqimba eziningi:
I-PCB Design | Ukukhishwa Okunemisebe (dB) |
|---|---|
Umthetho wamahora angu-20 | 3.6 ukuze 4.4 |
Umthetho Wamahora angu-20 Awukho | 0 (isisekelo) |
Imodi ye-TMlO | 7 (umehluko) |
Uma usebenzisa umthetho wamahora angama-20, unganciphisa ukukhishwa kwegesi kufika ku-4.4 dB. Lokhu kusho ukuthi umklamo wakho we-pcb uzoba nethuba elingcono lokuhlangabezana nezindinganiso eziqinile ze-emi. Uphinde unciphise ingozi yokuthi ibhodi lakho libangele izinkinga kwamanye amadivayisi.
Qaphela: Ukukhishwa okuphansi komoya kusho ukuthi umkhiqizo wakho uphephile futhi uthembekile.
Izinzuzo Zobuqotho Besignali
Ufuna isignali yakho ihlale ihlanzekile njengoba ihamba ngaphesheya kwebhodi. Umthetho wamahora angama-20 uyakusiza ukuthi ugcine isignali iqinile futhi icacile. Uma uhlukanisa amandla nezindiza zomhlabathi okungenani ngokuphindwe kabili kunobukhulu be-dielectric, uyeka ukukhipha imisebe. Lokhu kugcina amandla ngaphakathi kwebhodi futhi kude nemiphetho.
Uzobona amaphutha ambalwa nomsindo omncane kumasekethe akho. Amasignali akho esivinini esikhulu azohamba ngokulahlekelwa okuncane. Lokhu kwenza i-pcb yakho isebenze kangcono, ikakhulukazi uma usebenzisa ama-fast chip noma izingxenye ezibucayi. Ubuqotho obuhle besiginali busho ukuthi ibhodi lakho lizosebenza njengoba ulindele njalo uma ulivula.
Indlela i-20H esebenza ngayo ku-PCB
Isimiso se-20H
Usebenzisa isimiso samahora angama-20 ukulawula indlela amasimu kagesi aziphatha ngayo ngaphakathi komklamo wakho we-pcb. Lo mthetho uvela emibonweni yokuhambisana kwe-electromagnetic. Ukutshela ukuthi udonse emuva unqenqema lwendiza yamandla okungenani ngokuphindwe kabili ukuphakama kwe-dielectric kusuka onqenqemeni lwendiza yasemhlabeni. Uma wenza lokhu, ugcina iningi lensimu kagesi ngaphakathi ebhodini. Uyayivimba ukuthi ingaphumi futhi ibangele izinkinga.
Isimiso samahora angama-20 sisebenza kahle kakhulu uma unezinguquko zamanje ezisheshayo, njengezikhathi zokukhuphuka noma zokuwa ngaphansi kwe-nanosecond eyi-1.
Udinga ukubeka indiza yamandla ngaphakathi kwebhodi, enezendlalelo zomhlabathi ezizungezile.
Lokhu kusetha kukusiza ukuthi ugcine imigqa yakho yesignali ithule futhi izinzile.
Uma ulandela umthetho wamahora angama-20, wenza ibhodi lakho liphephe futhi lithembeke kakhudlwana. Uphinde usize amasekethe akho ukuthi aphumelele ukuhlolwa okunzima kwe-EMI.
Ukucindezelwa Kwemisebe Yomphetho
Ufuna ukuvimba amasimu kagesi ukuthi angaphumi emaphethelweni ezingqimba zakho. Umthetho wamahora angama-20 uyakusiza ukwenza lokhu ngokuvalela amasimu ngaphakathi kwendiza yasemhlabeni. Uma uhoxisa indiza yamandla ngamahora angama-20, ubamba cishe u-70% wensimu kagesi. Uma uhoxisa kakhulu, njengehora eli-100, ungabamba kufikela ku-98%.
Ibanga lokuhoxisa | Ukuvalelwa Kwensimu Kagesi |
|---|---|
20H | ~ 70% |
100H | ~ 98% |
Ubona izinzuzo ezinkulu kakhulu ku- umklamo we-pcb wesivinini esikhulu, njenge-RF, ukuxhumana, kanye namabhodi ezimoto. Nansi indlela osebenzisa ngayo lo mthetho:
Hlehlisa indiza yamandla ngaphambi kwamahora angama-20 ukusuka emaphethelweni endiza yasemhlabeni.
Lesi sinyathelo sinciphisa imisebe enqenqemeni ngo-30 kuya ku-40 dB.
Ugcina isignali yakho ihlanzekile futhi ibhodi lakho lithule. Uqinisekisa futhi ukuthi imigqa yakho ayizwakali umsindo ongadingeki. Umthetho wamahora angama-20 ukunika indlela elula yokuthuthukisa ukusebenza kanye nokulawula i-EMI.
Ukusebenzisa i-20H ku-PCB Design
Iziqondiso Zokuqoqwa Kwezinqwaba
Udinga ukukhetha i-stackup efanele uma usebenzisa umthetho we-20H ekwakhiweni kwe-pcb enezingqimba eziningi. I-stackup inquma ukuthi izendlalelo zakho zisebenza kanjani ndawonye nokuthi ibhodi lakho lilawula kahle kangakanani ukuphazamiseka kwe-electromagnetic. Ungabona izixazululo ezimbili eziyinhloko ze-stackup ngezansi:
Isixazululo | Incazelo |
|---|---|
Isixazululo Sokuqala | Sebenzisa lokhu uma unama-chips amaningi ebhodini lakho. Beka ungqimba lomhlabathi eduze kwengqimba yesignali enezimpawu eziningi. Lokhu kusethwa kuthuthukisa ubuqotho besiginali futhi kusiza ukuvimbela imisebe. Iphinde ibonise umthetho wama-20H ngokugcina umkhawulo wendiza yamandla kude nomkhawulo wendiza yasemhlabeni. |
Isixazululo Sesibili | Khetha lokhu kumabhodi anezingcezu ezimbalwa kanye nesikhala esanele nxazonke. Beka izendlalelo zomhlabathi ngaphandle kanye nezendlalelo zesignali/zamandla phakathi. Lesi sakhiwo sivikela izimpawu futhi silawula ukuvinjelwa. Sisebenza kahle kakhulu ekulawulweni kwe-EMI ebhodini elinezendlalelo ezine. |
Amanothi engeziwe | Khulisa ibanga phakathi kwezendlalelo zesiginali namandla. Yenza izikhombisi-ndlela zokulandelela ziqonde phezulu ukuze ugweme ukukhuluma ngokunqamula. Lawula indawo yebhodi ukuze ihambisane nomthetho wama-20H. Xhuma amandla nethusi eligayiwe ukuze kube nokuqhuba okuhle. |
Icebiso: Hlola njalo i-stackup yakho ngaphambi kokuthi uqale ukuqondisa. I-stackup enhle ikusiza ukuthi ulandele umthetho wamahora angu-20 futhi igcine ibhodi lakho lithule.
Ukucatshangelwa kwesakhiwo
Kumelwe uqaphele imininingwane yesakhiwo uma usebenzisa umthetho wama-20H. Lo mthetho ukusiza ukulawula insimu kagesi phakathi kwezingqimba zamandla nomhlabathi. Unciphisa indiza yamandla ngaphakathi ngama-20H. Lesi sinyathelo sigcina iningi lensimu kagesi ngaphakathi komphetho womhlabathi futhi sinciphisa ukuphazamiseka kwe-electromagnetic.
Nazi izinyathelo ezibalulekile zokuhlelwa:
Sebenzisa umthetho we-20H ukuze unciphise ukuxhumanisa kwendiza emiklamo yesivinini esikhulu.
Qiniseka ukuthi indiza yamandla incane okungenani ngamahora angu-20 kunendiza yasemhlabeni.
Le ndlela inciphisa ukuvuza kwamandla e-RF futhi ithuthukisa ukuhambisana kwe-electromagnetic.
Kufanele futhi uqaphele izingibe ezivamile:
Ukufaka izikhala noma izikhala kungamisa ukugeleza kwamanje futhi kubangele ukungasebenzi kahle.
Ama-sliver angase adale ama-short ngokwakha ukuxhumana okungafuneki.
Ukungabikho kwemaski ye-solder phakathi kwama-pads kungaholela emabhulohweni e-solder.
Izicupho ze-asidi zinganciphisa ukuxhumana ngesikhathi sokusika.
Ukuphazamiseka okukhulu kwe-electromagnetic kungenza umkhiqizo wakho wehluleke.
Ukungagcini ngokwanele kwesikhala sethusi kusukela emngceleni kuya emphethweni kungabangela ukufinyela nokugqwala.
Qaphela: Ukuhlelwa ngokucophelela kanye nokukhetha okuqoqiwe kukusiza ukuthi uthole okuningi emthethweni we-20H. Ugcina umklamo wakho we-pcb uqinile futhi unokwethenjelwa.
Izinzuzo ze-20H ku-PCB
Ukulawulwa kwe-EMI
Ufuna kwakho I-PCB izophumelela ukuhlolwa kwe-EMI futhi isebenza kahle kunoma iyiphi indawo. Umthetho we-20H ukunika ithuluzi eliqinile lokulawula ukuphazamiseka kwe-electromagnetic. Uma udonsa emuva unqenqema lwendiza yamandla ngokuphindwe ka-20 ukuphakama kwe-dielectric, ubamba iningi lensimu kagesi ngaphakathi kwebhodi. Lesi sinyathelo sivimbela ibhodi lakho ukuthi lingasebenzi njenge-antenna.
Ungabona imiphumela yangempela uma usebenzisa umthetho wama-20H. Onjiniyela balinganise umehluko ekukhiqizweni komoya ongcolile ngalo mthetho nangaphandle kwawo. Nazi ezinye zezinto ezibalulekile ezitholakele:
Ungabona ukwanda kwe- I-3.6 dB ekukhishweni kwegesi kumodi ye-TM10 uma usebenzisa umthetho we-20H.
Ukukhishwa okulinganisiwe kungahluka cishe ngo-7 dB kwimodi ye-TM10 uma kuqhathaniswa nalokho okushiwo yi-theory.
Lezi zinombolo zibonisa ukuthi umthetho we-20H wenza umehluko wangempela ekulawulweni kwe-EMI. Unciphisa ingozi yokuthi ibhodi lakho libangele izinkinga kwamanye amadivayisi. Futhi wenza kube lula ukuhlangabezana nezindinganiso eziqinile zemboni.
Ithiphu: I-EMI ephansi isho ukuthi umkhiqizo wakho cishe ngeke wehluleke ukuhlolwa kokuhambisana nemithetho. Wonga isikhathi nemali ngesikhathi sokuqinisekiswa.
Ukusebenza Okuthuthukisiwe
Ufuna amasekethe akho asebenze ngokushesha futhi ahlale ethembekile. Umthetho wama-20H uyakusiza ukuthi ufinyelele lo mgomo. Ngokugcina insimu kagesi ingaphakathi ebhodini, uvikela amasignali akho emsindweni wangaphandle. Amasignali akho esivinini esiphezulu ahlala ehlanzekile njengoba ehamba ngaphesheya kwe-PCB.
Uthola nobuqotho besignali obungcono. Lokhu kusho ukuthi idatha yakho iyahamba ngaphandle kwamaphutha noma ukulahleka. Ibhodi lakho lisebenza njengoba ulindele, ngisho noma unezinkinobho ezisheshayo nezingxenye ezibucayi. Ubona amaphutha ambalwa kanye nesikhathi esincane sokungasebenzi.
Nazi ezinye izindlela umthetho we-20H othuthukisa ngazo ukusebenza:
Igcina izindlela zesignali zizinzile futhi inciphisa ukukhuluma okuphambene.
Kusiza ibhodi lakho ukuthi liphathe isivinini esiphezulu ngaphandle komsindo owengeziwe.
Kwenza umklamo wakho uqine kakhulu ezindaweni ezinzima.
Uma usebenzisa umthetho we-20H, wakha ama-PCB ahlala isikhathi eside futhi asebenze kangcono. Unikeza imikhiqizo yakho inzuzo yangempela emakethe.
Imikhawulo yoMthetho wama-20H
Uma i-20H ingase ingasizi
Ungase ucabange ukuthi Umthetho wamahora angu-20 uhlala wenza i-PCB yakho ibe ngconoKodwa ngezinye izikhathi, kunzima ukusebenzisa lo mthetho. Amanye amabhodi ayaxaka emthethweni wama-20H. Imiklamo yezingqimba eziningi idinga ukuxhumana okuningi kanye nemikhondo. Kungaba nzima ukugcina isikhala esanele phakathi kwamandla kanye nezindiza zomhlaba. Amabhodi amancane anezingqimba eziningi alahlekelwa indawo yokuqondisa ngokushesha. Amabanga angaphakathi angathatha isikhala esiningi kakhulu. Lokhu kushiya isikhala esincane sezimpawu zakho.
Nasi ithebula elibonisa imikhawulo evamile:
Ukulinganiselwa | incazelo |
|---|---|
Amabanga Angaphakathi | Ukuthola amabanga afanele angaphakathi kunzima, ikakhulukazi ekwakhiweni kwezingqimba eziningi. |
Ukuphazamiseka kwe-Electromagnetic (EMI) | Ukusebenzisa umthetho we-20H ngendlela engafanele kungenza izinkinga ze-EMI zibe zimbi kakhulu. |
Indawo Yomzila | Ukugcina indawo eyanele yokuqondisa kunzima, ikakhulukazi kuma-PCB amancane anezingqimba eziningi lapho ingxenye engaphakathi idinga ukusebenzisa isikhala esiningi. |
Kufanele uhlole usayizi webhodi lakho nokuthi unezendlalelo ezingaki ngaphambi kokusebenzisa umthetho we-20H. Ngezinye izikhathi, kufanele ulinganisele ukulawulwa kwe-EMI nendawo eyanele yokuqondisa.
Ukushintshana kanye nemibono eyiphutha
Abanye abantu bathi umthetho we-20H uhlala wehlisa ukukhishwa kwegesi emabhasini kagesi. Lokhu akulona iqiniso ngaso sonke isikhathi. Ngezinye izikhathi, umthetho ungenza imisebe yendiza yamandla ikhuphuke. Udinga ukwazi ukuthi ibhodi lakho lisebenza kanjani ngaphambi kokusebenzisa umthetho.
Abaklami abaningi bacabanga ukuthi ukugoba okungama-degree angu-90 emigqeni kuhlale kubangela inkinga. Kodwa umphumela walokhu kugoba uncike ekwakhiweni kwakho. Ngezinye izikhathi, akulimazi ubuqotho besiginali. Imigqeni yokuqapha nayo ayisebenzi ngendlela efanayo ngaso sonke isikhathi. Ungase ucabange ukuthi iyasiza njalo, kodwa imiphumela yayo iyashintsha ngebhodi ngalinye.
Nasi ithebula elicacisa eminye imibono eyiphutha evamile:
Umbono oyiphutha | Ukucacisa |
|---|---|
Umthetho we-20H unciphisa ukukhishwa kwegesi okuvela ebhasini likagesi. | Ukusebenzisa umthetho wama-20H ngezinye izikhathi kungenza imisebe yendiza yamandla ibe phezulu. |
Ukugoba okungama-degree angu-90 emikhondweni kuhlale kuyingozi. | Umphumela wokugoba kwama-degree angu-90 uhlukile kumklamo ngamunye. |
Izimpawu zokuvikela zihlala zisebenza kahle. | Izimpawu zokuvikela zisebenza kahle kuphela kweminye imiklamo. |
Akufanele ulandele imithetho nje kuphela. Hlola njalo umklamo wakho bese usebenzisa amathuluzi okulingisa ukuhlola izinkinga ze-EMI kanye nezimpawu. Ukuhlela ngokucophelela kukusiza ugweme amaphutha futhi wenze ama-PCB angcono.
Izindlela Ezinhle Kakhulu Zokusebenza Zama-20H ku-PCB
Amathiphu wokwakha
Ufuna i-PCB yakho isebenze kahle futhi iphumelele izivivinyo ze-EMI. Kufanele ulandele amathiphu alula okuklama ukuze usebenzise umthetho we-20H ngendlela efanele. Okokuqala, yenza njalo indiza yamandla ibe ncane kunendiza yasemhlabeni. Lesi sinyathelo sikusiza ukuthi ugcine insimu kagesi ngaphakathi kwebhodi. Kufanele futhi ugcine unqenqema lwendiza yamandla okungenani izikhathi ezingamashumi amabili ubukhulu be-dielectric kude nonqenqema lwendiza yasemhlabeni. Lesi sikhala sehlisa ukuhlangana phakathi kwezingqimba futhi sigcina ukuphazamiseka kuphansi.
Yenza indiza yamandla ibe ncane kunendiza yasemhlabeni.
Gcina unqenqema lwendiza yamandla okungenani ngokuphindwe ka-20 ubukhulu be-dielectric kude nonqenqema lwendiza yasemhlabeni.
Icebiso: Hlola i-stackup yakho ngaphambi kokuthi uqale ukuqondisa. Ukuhlela okuhle kukusiza ugweme izinkinga ngemigqa yesignali futhi kugcina ibhodi lakho lithule.
Kufanele usebenzise lawa macebiso uma uklama amabhodi anesivinini esikhulu. Azokusiza gcina izimpawu zihlanzekile futhi wehlise umsindo. Uqinisekisa nokuthi ibhodi lakho lisebenza kahle ngezingqimba eziningi.
I-Real-World Use Cases
Ungabona umthetho we-20H usebenza kumaphrojekthi amaningi e-PCB angempela. Onjiniyela basebenzisa lo mthetho ukwehlisa imisebe kagesi. Uma usebenzisa umthetho ngendlela efanele, ubamba iningi lensimu kagesi ngaphakathi kwebhodi. Lesi sinyathelo sisiza ibhodi lakho ukuthi liphumelele ukuhlolwa okunzima kwe-EMC.
okutholakele | Incazelo |
|---|---|
Ngempumelelo | Umthetho we-20H unganciphisa imisebe kagesi uma usetshenziswa kahle. |
Ukusetshenziswa kabi | Uma isetshenziswa kabi, ingandisa imisebe futhi idale izinkinga ezengeziwe. |
Ukuzindla Kwangaphakathi | Uhlelo lokusebenza lungaholela ekukhanyeni kwangaphakathi okwandisiwe, okuthinta ukusebenza. |
Kumele qonda imvelaphi nenhloso yomthetho we-20H ngaphambi kokuba uwusebenzise. Uma usebenzisa kabi umthetho, ungase udale izinkinga eziningi kunalokho ozixazululayo. Empeleni, onjiniyela bathole ukuthi ukudonsa izindiza zamandla emuva akubangeli izinkinga ze-EMC. Ungasebenzisa umthetho we-20H ukuthuthukisa ibhodi lakho, kodwa kufanele uhlole umklamo wakho futhi uhlole imigqa yakho ukuze uthole imiphumela emihle kakhulu.
Qaphela: Hlola njalo ibhodi lakho ngemva kokusebenzisa umthetho we-20H. Ukuklama nokuhlola ngokucophelela kukusiza ugweme amaphutha futhi wakhe ama-PCB athembekile.
Manje usuyazi ukuthi kungani umthetho we-20H ubalulekile ekwakhiweni kwe-PCB. Lo mthetho usiza ukugcina izimpawu ezisheshayo zicacile futhi umise ukukhuluma ngokuphambene. Kufanele usebenzise umthetho uma ufuna ukuphazamiseka okuncane kwe-electromagnetic kanye nekhwalithi engcono yesignali.
Umthetho wama-20H uvimba amasimu kagesi ukuthi angagxumi phakathi kwemigqa.
Kukusiza ukugwema umsindo namaphutha kumasekethe anemvamisa ephezulu.
Bheka njalo ukuthi umklamo wakho udingani ngaphambi kokusebenzisa umthetho we-20H. Uma ufuna ukufunda kabanzi, hlola iziqondiso ze-PCB stackup ezithuthukisiwe kanye nezinsiza zokulawula i-EMI.
Imibuzo Evame Ukubuzwa
Usho ukuthini umthetho we-20H ngomklamo webhodi lakho?
Usebenzisa umthetho wama-20H ukugcina unqenqema lwendiza yamandla kude nonqenqema lwendiza yasemhlabeni. Lokhu kusiza ibhodi lakho ukuthi lilawule ukuphazamiseka kwe-electromagnetic. Wenza ibhodi lakho liphephe futhi lithembeke kakhulu ngokulandela lesi siqondiso esilula.
Indiza yasemhlabeni iyithinta kanjani ikhwalithi yesignali ebhodini lakho?
Indiza yasemhlabeni inikeza ibhodi lakho inkomba eqinile yezibonakaliso. Ugcina umsindo uphansi futhi uthuthukisa ubuqotho bezibonakaliso. Uma ubeka indiza yasemhlabeni ngendlela efanele, ibhodi lakho lisebenza kangcono ngezibonakaliso zesivinini esikhulu.
Kungani kufanele unciphise indiza yamandla ebhodini lakho?
Unciphisa indiza yamandla ukuze ingafinyeleli emaphethelweni endiza yasemhlabeni. Lesi sinyathelo sibamba amasimu kagesi ngaphakathi kwebhodi lakho. Unciphisa ingozi yokuthi ibhodi lakho lisebenze njenge-antenna futhi libangele izinkinga.
Ungayisebenzisa yini imithetho yama-20H kuwo wonke amabhodi?
Ungasebenzisa umthetho we-20H kumabhodi amaningi, kodwa amabhodi amancane anezendlalelo eziningi angase alahlekelwe isikhala somzila. Udinga ukuhlola usayizi webhodi lakho kanye nenani lezendlalelo ngaphambi kokusebenzisa umthetho. Ngezinye izikhathi, kufanele ulinganisele ukulawulwa kwe-EMI nendawo yezibonakaliso.
Kwenzekani uma ungayinaki iplanethi yasemhlabeni ekwakhiweni kwebhodi lakho?
Uma ungayinaki indiza yaphansi, ibhodi lakho lingase lithole umsindo owengeziwe. Ubona ukulahleka kwesiginali okwengeziwe kanye namaphutha. Ibhodi lingahluleka ukuhlolwa kwe-EMI. Kufanele njalo ufake indiza yasemhlabeni ukuze ibhodi lakho liqhubeke lisebenza kahle.
