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Inqaku le-GND kwisekethe
Ngexesha leUkulala kwe-PCBInkqubo, iinjineli ziya kujongana nonyango olwahlukileyo lwe-GNN.
Kutheni yenzekile? Kwisigaba sokuyila sesekethe, ukwenzela ukunciphisa ukuphazamiseka phakathi kwesekethe, iinjineli ngokubanzi zazisa iingcingo ze-GND zomhlaba ezi-0 Vres zesakhiwo ezikhoyo ze-0V ezisebenzayo, zenza iilogo ezahlukeneyo zangoku.
Ukuhlelwa kweengcingo ze-GND zombane:
I-1. I-ANAG yoWire Agnd
I-ANAG yoWire ye-ANHY I-AGN isetyenziswa ikakhulu kwinxalenye yesekethe ye-alog, njengokufunyanwa kwe-ADC yesekethe ye-ANAGS, isekethe ye-Amplimier ye-Amplimaer, njl.
Kwezisketheka ze-alog, kuba umqondiso ngumqondiso we-analog kunye nomqondiso obuthathaka, uchaphazeleka ngokulula yimijikelezo emininzi yezinye izekethe. Ukuba ayisebenzi, imijikelezo emikhulu iya kuvelisa i-voltage enkulu yehla kwisekethe ye-analog, ibangela umqondiso we-analog ukuba ugqwetheke kwaye unokubangela umsebenzi wesekelo we-Alog ukuba usilele.
I-2. I-Digital yoWire yeDired
I-Digital yoWire yeDijithali yeDigital, ngokucacileyo ihambelana ne-agre ye-alog yocingo, isetyenziswa ikakhulu kwinxalenye yesekethe yedijithali, njengeesekethe ezibalulekileyo zokuchonga, kwisekethe ezinxibelelana ze-USb,isekethe ye-microcontroller, njl.
Isizathu sokumisela i-wire yocingo ledijithali le-digital yi-digital theithis yindawo eqhelekileyo, eyokutshintsha i-switch kuphela ewahlulelweyo kuphela phakathi kwe "0" kunye ne-1 ", njengoko kubonisiwe kumzobo ongezantsi.
Ngexesha lenkqubo ye-voltage etshintsha ukusuka kwi "0" ukuya "1" okanye ukusuka "1" ukuya "0", i-voltage ivelisa utshintsho. Ngokwemfundiso ye-Maxwell electromagnetic, abatshintshi bexesha abaya kuvelisa intsimi yemagnethi, besenza imitha ye-EMC ngezinye iisekethe.
Ukunciphisa ifuthe lemitha ye-EMC kwisekethe, i-DGD ye-Wire yoWire yeDigital yoWire kufuneka isetyenziselwe ukubonelela ngedwa kwezinye iisekethe.
I-3. I-Wire yoMhlaba
Nokuba yi-agre ye-agre ye-agre ye-wire okanye i-digital yocingo le-DEBD, ziseketheni zombane eziphantsi. Kwiisekethe eziphezulu zombane, ezinjengeesekethe eziqhutywa ngemoto, i-elektromagnetic i-vall, kukwakhona intambo yomzimba eyahlukileyo ebizwa ngokuba yi-wire yombane
Iisekethe eziphezulu, njengoko igama libonisa, zijikelezile ngemithi emikhulu. Ngokucacileyo, imithetho emikhulu ibangela ukuba umhlaba uphume phakathi kokusebenza okwahlukileyoiisekethe.
Nje ukuba kubekho ukugqitywa komhlaba kwisekethe, i-5V ye-5V ingabi yi-5V kwakhona, kodwa ibe yi-4V. Kuba i-5V ye-voltage ihambelana ne-0V ye-intanethi ye-wire. Ukuba umhlaba owenziweyo ubangela ukuba i-gnd inyuke ukusuka kwi-0V ukuya kwi-1V, emva koko i-5V ye-5V ye-5v
I-4. Ukuhanjiswa kwamandla e-wire gnd
I-ANAG yoWire Agre, ucingo lwedijithali yedijithali ye-Dired, kunye ne-Wire yoMhlaba weWire Pgw zonke zihlelwe njenge-DC Wire FND. Ezi ntlobo zihlukeneyo zeengcingo zomhlaba kufuneka zonke ziqokelelwe ndawonye kwi-Wire yeNkcazo ye-0V kwisekethe yonke isekethe, ebizwa ngokuba yi-cire yombane.
Uncedo lwamandla ngumthombo wamandla kuzo zonke iziphaluka. Lonke i-voltage kwaye imfuneko yangoku efunekayo kwisekethe ukusebenza ivela kunikezelo lwamandla. Ke ngoko, i-wire ye-wire ye-wire ye-wire ye-wine ye-0v ye-voltage ye-0V ye-Voltage yazo zonke iisekethe.
Kungenxa yoko le nto ezinye iintlobo zengcingo yomhlaba, nokuba yi-agre ye-agre ye-wire, i-Digital yoWire Sure Dgnd okanye iWire yoWire yeWire Pgnd, kufuneka zonke ziqokelelwe ndawonye kunye ne-wire ye-wire yombane.
I-5. I-ac yocingo lwe-ac
I-cire yowiwu ye-AC ye-ACI ifumaneka kwisekethe ejikelezayo ngemithombo yamandla e-AC ye-AC, njengeesekethe ze-AC-DC zoNxibelelwano.
Isekethe ye-AC-DC yoNxibelelwano yahlulwe yangamacandelo amabini. Inqanaba elingaphambili lesekethe yisekethe ye-AC, kwaye inqanaba le-DC lisekethe i-DC, enyanzeliswa ukuba yenze iingcingo zemihlaba emibini, enye yicingo le-AC, kwaye enye yi-cire yocingo lwe-AC.
Ucingo olumhlaba we-AC lusebenza njengendawo yengxelo ye-0V yesabelo seseketheni se-AC, kwaye i-DC yocingo lwe-DC lusebenza njengendawo yencwadi ye-DC yenxalenye yesekethe ye-DC. Ngokwesiqhelo, ukuze sidibanise i-wire ye-wire ye-wire kwisekethe, injineli iya kuqhagamshela i-ACIR ye-ACIR kwi-DC ye-DC ye-DC ye-DC ngeCapatiling Cangoling okanye i-impoctor.
I-6. Umhlaba womhlaba womhlaba
I-voltage yokhuseleko yomzimba womntu ingaphantsi kwe-36V. Ukuba i-voltage idlula i-36V isetyenziswa emzimbeni womntu, iya kubangela ingozi emzimbeni womntu. Olu lukhuseleko olo oluqhelekileyo lweenjineli xa kuphuhliswa uyilo lweprojekthi.
Ukuphucula izinto zokhuseleko zesekethe, iinjineli ngokubanzi zisebenzisa i-World Hond kwi-Wight-Vollage ye-Wightied kunye neeprojekthi eziphezulu zangoku, ezinje ngezixhobo zombane ezifana nabalandeli boombane, kunye neetekhnoloji. Isokethi kunye nomsebenzi wokukhusela umgwanzi ubonisiwe kumzobo ongezantsi.
Isizathu sokuba kuphuma iziseko zekhaya sineziseko ezintathu kungenxa yokuba, nangona amandla angama-220v An afuna i-wire ephilayo kunye nocingo olungathathwayo, i-terminal yomhlaba wesithathu yelizwe (i-egnd).
Ezi termina zimbini zisetyenziselwa iingcingo ze-220v zamandla angama-220v, ngelixa isiphelo sesithathu singamandla omhlaba owukhuselayo (i-Egnd).
Kubalulekile ukuba uqaphele ukuba umhlaba wasemhlabeni (i-igland) idityaniswe nomhlaba kwaye inika ukhuseleko kwi-Vistage ephezulu. Ayithathi nxaxheba kumsebenzi wesiphaluka kwaye ayidibani nomsebenzi wesiphaluka.
Ke ngoko, umhlaba womhlaba (i-Egnd) ibaluleke kakhulu kombane ovela kwezinye iintlobo zonxibelelwano lomhlaba (GND).
Ukujonga umgaqo-siseko we-gnd:
Iinjineli zinokuzibuza ukuba kutheni kukho umahluko omkhulu kaMhlaba (GND) kwaye kutheni kufuneka bakwazise imisebenzi emininzi ye-GNN.
Ngokwesiqhelo, iinjineli zenza lula ukunxibelelana kwe-GND kwi "GNT" ngaphandle kokuqhutywa koyilo lweziCwangciso, ukwenza kube nzima ukubona imihlaba eyahlukeneyo yesekethe. Ngenxa yoko, lonke uqhagamshelo lwe-GND luhlanganelwe nje.
Nangona le nkqubo ilula ilula, ikhokelela kuthotho lweengxaki:
1. Ukuphazamiseka kwesibonakaliso:
Ukuba umhlaba owahlukileyo (unxibelelwano lwe-GND) luhlanganiswe ngokuthe ngqo, iisekethe ezikhulu zokuhambahamba ezihamba phantsi komhlaba (i-GNN) zinokuphazamisa inqaku le-STARTERORTE (GND) leisekethe zombane eziphantsi, ezikhokelela kwi-crosstalk phakathi kwesekethe eyahlukileyo.
2. Ukuchaneka kwesibonakaliso:
Kwisekethe ye-ANOG, ukuchaneka kwesiginali yimetric yovavanyo olubalulekileyo. Ukuphulukana nokuchaneka kokuyithobela intsingiselo yentsusa yesekelo ye-analog.
Umhlaba (i-CGND) yokubonelela ngamandla e-AC ACSTutes kwi-veloodal ye-tistic sisodal, ebangela ukuba i-voltage yayo iguquke ngokunjalo. Ngokungafaniyo noMhlaba we-DC (GNN), ohlala uhlala kwi-0V.
Xa umhlaba wesekethe owahlukileyo (i-GND) idityaniswe, i-cyclication yokuguquguquka komhlaba we-AC (i-CGND) inokuchaphazela utshintsho kumhlaba we-Analog
3. EmcUvavanyo:
Ukubuthukisa umqondiso, obuthathaka ubuthathaka kwimitha ye-electromagnetic yangaphandle (EMC). Ukomelela komqondiso, owomeleleyo kwi-EMC yangaphandle.
Ukuba umhlaba wesekethe owahlukileyo (i-GND) idityaniswe, umhlaba (i-GNN) yesekethe eqinileyo iphazamisa ngokuthe ngqo emhlabeni (i-GNND) yesekethe yobuthathaka. Ngenxa yoko, i-elektromagnege radialic radiation (i-EMC) ingumthombo oqinileyo wemitha ye-electromagnetic ngaphandle, esenza ucelomngeni ukuphindezela ukuphathwa kwe-EMC.
4. Ukuqinisekiswa kwesekethe:
Unxibelelwano oluncinci phakathi kweenkqubo zesekethe, kokukhona okukhulu ubuchule bokusebenza kwisekethe nganye. Kwelinye icala, uqhagamshelo olungaphezulu, ububuthathaka obukhoyo bokusebenza.
Qwalasela iinkqubo ezimbini zesekethe, a no-B, ngaphandle kokuphazamiseka. Ukusebenza kwenkqubo yesekethe akufanele kuchaphazele ukusebenza okuqhelekileyo kwenkqubo yesekethe b, kunye ne-vice vice.
Oku kufana nabantu abangabaziyo, apho utshintsho lweemvakalelo lomntu lungachaphazeli imvakalelo yelinye ngenxa yokuba abanalo uqhagamshelo.
Ukuba umhlaba wesekethe owahlukileyo (unxibelelwano lwe-GND) ludityaniswe kwisekelo lesekethe, longeza ikhonkco lokudibanisa elinyusa ukuphazamisa phakathi kwesekethe, ngaloo ndlela kunciphisa ukuthembeka komsebenzi wesekethe.
I-Shenzhen Anke PCB CO., LTD
I-POSTAL: I-Dec-05 ukuya ku-523
