I. Uhlolojikelele
Izinto ezintathu zokuphazamiseka kazibuthe ziwumthombo wokuphazamiseka, indlela yokudlulisa ukuphazamiseka, umamukeli wokuphazamiseka, i-EMC ezungeze lezi zindaba zocwaningo.Izindlela eziyisisekelo zokunciphisa ukuphazamiseka ziwukuvikela, ukuhlunga, ukubeka phansi.Ikakhulukazi zisetshenziselwa ukunqamula indlela yokudlulisela yokuphazamiseka.
Namuhla sikhuluma ngokuhlunga kwe-EMC, ukulungiswa kwe-EMC ezindleleni zokuhlunga ezivame ukusetshenziswa kunezindlela ezihlukahlukene, okulandelayo sizobe sisekelwe kulezi zinhlobo zezindlela zokuhlunga, ukuhlaziya izindaba ezidinga ukunakwa ohlelweni lokusetshenziswa.
II.Ukuhlunga kazibuthe
Ukuhlunga kazibuthe kungokwethulwa kwezingxenye kazibuthe kusekethe, kuvinjwe ukusakazeka komsindo we-high-frequency kanye nokuboniswa, ngaleyo ndlela kunciphisa ukuphazamiseka kukazibuthe.Izingxenye kazibuthe ezivamile zihlanganisa izindandatho kazibuthe, bar uzibuthe, amakhoyili, njll.
(1) Ibanga lefrikhwensi: Izici zokuvama kwezihlungi kazibuthe zikhawulela ububanzi befrikhwensi yokuphazamiseka ezingakwazi ukuyicindezela ngokuphumelelayo.Ngakho-ke, lapho ukhetha isihlungi kazibuthe, kuyadingeka ukunquma uhla lwemvamisa oyifunayo bese ukhetha isihlungi esifanele.
(2) Uhlobo lwesihlungi: Izinhlobo ezihlukene zezihlungi kazibuthe zisebenza ngendlela ehlukile ezinhlotsheni ezihlukene zemithombo yokuphazamiseka.Isibonelo, izihlungi ze-loop kazibuthe ngokuvamile zifanele imithombo yomsindo wemvamisa ephezulu, kuyilapho izihlungi zamakhoyili zifaneleka kakhulu imithombo yomsindo wefrikhwensi ephansi.Ngakho-ke, lapho ukhetha isihlungi kazibuthe, izici zomthombo wokuphazamiseka kanye nezici zesihlungi zidinga ukucatshangelwa.
(3) Indawo yokufaka: Izihlungi zikamagnetic zidinga ukufakwa phakathi komthombo wokuphazamiseka kanye nempahla ethintekile ukuze kuhlungwe ngokuphumelelayo ukuphazamiseka.Kodwa-ke, kuyadingeka ukugwema ukubeka isihlungi kazibuthe endaweni yokushisa ephezulu noma indawo yokudlidliza ukuze kuqinisekiswe ukwethembeka nokuzinza kwaso.
(4) Uxhumano oluphansi: Uxhumo lomhlabathi lunomthelela obalulekile ekusebenzeni kwezihlungi kazibuthe.Ukuxhuma kahle i-earth wire kungathuthukisa ukusebenza kwesihlungi, kuthuthukise umphumela wokucindezela futhi kunciphise ukuphazamiseka kozibuthe.
III.Isihlungi esinamandla
Isihlungi se-Capacitive: Ngokwethula ama-elementi e-capacitive kusekethe, i-high-frequency current iqondiswa phansi ukuze kuncishiswe imisebe nokusakazeka kokuphazanyiswa nguzibuthe kagesi.
(1) Izinhlobo zama-capacitor: Kunezinhlobo ezahlukene zama-capacitor, njenge-tantalum electrolytic capacitors, i-aluminium electrolytic capacitors kanye nama-ceramic capacitors.Izinhlobo ezahlukene zama-capacitor zinokusebenza okuhlukile kumabanga ahlukene wemvamisa, ngakho-ke udinga ukukhetha i-capacitor efanele ngokuya ngesimo esithile.
(2) Ibanga lefrikhwensi: Izici zokuvama kwezihlungi ze-capacitive zikhawulela ububanzi befrikhwensi yokuphazamiseka ezingabucindezela ngempumelelo.Ngakho-ke, lapho ukhetha izihlungi ze-capacitive, kuyadingeka ukunquma uhla lwemvamisa yokucindezela okudingekayo bese ukhetha isihlungi esifanele.
(3) Ukukhethwa kwevelu ye-capacitance: Inani le-capacitance ye-capacitor lithinta ngokuqondile umphumela walo wokuhlunga, inani elikhulu le-capacitance, ngcono umphumela wokuhlunga.Kodwa ungakhethi i-capacitance enkulu kakhulu, ukuze ungabi nomthelela omubi ekusebenzeni okujwayelekile kwesifunda.
(4) Izici zokushisa: umthamo we-capacitor uzoshintsha ngokushintsha kwezinga lokushisa.Endaweni yokushisa ephezulu, umthamo we-capacitor uzoncipha, ngaleyo ndlela uthinte umphumela wawo wokuhlunga.Ngakho-ke, lapho ukhetha ama-capacitors, kuyadingeka ukucabangela izici zabo zokushisa bese ukhetha ama-capacitor anesimo esihle sokushisa.
IV.Isihlungi se-impedance
Isihlungi se-Impedance: Ngokwethula izingxenye ze-impedance kusekethe, isekethe ine-impedance ephezulu kusignali yemvamisa ethile, ngaleyo ndlela yehlise noma iqede ukuphazamiseka nomsindo.Izingxenye ezijwayelekile ze-impedance zifaka ama-inductors, ama-transformer, njll.
(1) Ibanga lefrikhwensi: Izici zokuvama kwezihlungi ze-impedance zikhawulela ububanzi befrikhwensi yokuphazamiseka ezingayicindezela ngempumelelo.Ngakho-ke, lapho ukhetha isihlungi se-impedance, kuyadingeka ukunquma uhla lwemvamisa oyifunayo yokucindezelwa bese ukhetha isihlungi esifanele.
(2) Uhlobo lwe-impedance: Izinhlobo ezahlukene ze-impedance zinokusebenza okuhlukile kwezinhlobo ezahlukene zemithombo yokuphazamiseka.Isibonelo, ama-inductors afanele imithombo yomsindo we-high-frequency, kuyilapho ama-transformer efaneleka kakhulu imithombo yomsindo we-low-frequency.Ngakho-ke, lapho ukhetha izihlungi ze-impedance, kuyadingeka ukukhetha izinombolo ezifanele ngokuya nezici zomthombo wokuphazanyiswa kanye nezici zesihlungi.
(3) Ukulinganisa kwe-Impedans: Umphumela wezihlungi ze-impedance uthintwa ukufanisa okungahambisani.Uma i-impedance ingafaniswa, khona-ke umphumela wesihlungi uzoncishiswa kakhulu.Ngakho-ke, lapho uklama futhi ufaka izihlungi ze-impedance, kuyadingeka ukuqinisekisa ukuthi i-impedance ifaniswe nokuthi uxhumano olufanele luyasetshenziswa.
(4) Indawo yokufaka: Izihlungi ze-Impedans zidinga ukufakwa phakathi komthombo wokuphazamiseka kanye nempahla ethintekile ukuze kuhlungwe ngokuphumelelayo ukuphazamiseka.Kodwa-ke, kuyadingeka ukugwema ukubeka isihlungi se-impedance endaweni yokushisa ephezulu noma imvelo yokudlidliza ukuze kuqinisekiswe ukwethembeka nokuzinza kwaso.
(5) Uxhumano Lwendawo: Ukuxhumana komhlabathi okwanele kuyisihluthulelo sokuqinisekisa ukusebenza kwezihlungi ze-impedance.Ukuxhuma kahle i-earth wire kungathuthukisa ukusebenza kwesihlungi se-impedance, kuthuthukise umphumela wokucindezela futhi kunciphise ukuphazamiseka kozibuthe.
Ukuhlunga Kwe-V. Band Pass
Ukuhlunga i-band-pass kuvumela amasignali ebangeni elithile lefrikhwensi ukuthi adlule ngenkathi kucindezela amasiginali kwamanye amafrikhwensi.
(1) Imvamisa yesikhungo: Imvamisa emaphakathi yesihlungi se-band-pass imvamisa yesiginali okufanele idluliswe, ngakho-ke kuyadingeka ukukhetha imvamisa yesikhungo esifanele.
(2) Ububanzi bomkhawulokudonsa: I-bandwidth yesihlungi se-bandpass ichaza ububanzi bemvamisa yesiginali okufanele idluliswe, ngakho-ke kuyadingeka ukukhetha umkhawulokudonsa ofanele.
(3) I-Passband ne-Stopband: Ibhendi yokudlula yesihlungi se-bandpass ichaza ububanzi befrikhwensi yesignali edlulayo, kuyilapho ibhande lokumisa lichaza ububanzi befrikhwensi yesiginali ecindezelwayo.Lapho ukhetha isihlungi, kuyadingeka ukukhetha i-passband efanele kanye nobubanzi be-stopband ngokuya ngezidingo zohlelo lokusebenza.
(4) Uhlobo lwesihlungi: Kunezinhlobo ezihlukahlukene zezihlungi ze-bandpass, njengezihlungi ze-oda lesibili, izihlungi zase-Butterworth, izihlungi ze-Chebyshev, njll. Izinhlobo ezahlukene zokuhlunga zinezici ezihlukile.Izinhlobo ezihlukene zezihlungi zinokusebenza okuhlukile, ngakho-ke kuyadingeka ukukhetha uhlobo olufanele lwesihlungi ngokuya ngesimo sohlelo lokusebenza oluthile.
(5) Impendulo yemvamisa: Impendulo yemvamisa yesihlungi se-bandpass inomthelela obalulekile ekusebenzeni kwayo.Ukuze kuqinisekiswe ikhwalithi yokudlulisela yesignali, kuyadingeka ukuqinisekisa ukuthi impendulo yemvamisa iphansi ngangokunokwenzeka futhi akukho senzakalo se-resonance engathandeki ekwakhiweni.
(6) Ukuzinza: Izihlungi ze-band-pass zidinga ukugcina ukusebenza okuzinzile, ngakho-ke kuyadingeka ukukhetha izingxenye zekhwalithi ephezulu kanye nesakhiwo sesifunda esifanele ukuze kuqinisekiswe ukuzinza kwe-zero crossing frequency kanye ne-amplitude.
(7) Ukwehluka kwezinga lokushisa: Ukusebenza kwezihlungi ze-band-pass kuzokhukhuleka ngenxa yezinguquko kuzinga lokushisa le-ambient.
VI.Isifinyezo
Ukuhlunga kungenye yezindlela ezijwayelekile esizisebenzisayo ukuxazulula izinkinga ze-EMC.Ukuze sixazulule izinkinga ze-EMC kahle, sidinga ukuqonda inkinga ngokugcwele, senze izinhlelo, sisebenzise izinhlelo, siqinisekise umphumela, sithuthukise ngokuqhubekayo futhi siqinise abaphathi.Kungale ndlela kuphela lapho singakwazi ukuxazulula ngempumelelo izinkinga ze-EMC futhi sithuthukise ukusebenza kwe-EMC kohlelo.
I-Zhejiang NeoDen Technology Co., LTD., eyasungulwa ngo-2010, ingumkhiqizi ochwepheshe okhethekile emshinini wokukhetha nendawo we-SMT, ihhavini eligeleza kabusha, umshini wokuphrinta we-stencil, ulayini wokukhiqiza we-SMT neminye Imikhiqizo ye-SMT.Sineqembu lethu le-R & D kanye nemboni yethu, sisebenzisa i-R&D yethu ecebile enokuhlangenwe nakho, ukukhiqizwa okuqeqeshwe kahle, sazuza idumela elihle kumakhasimende omhlaba wonke.
Sikholelwa ukuthi abantu abakhulu nozakwethu benza i-NeoDen inkampani enhle futhi ukuzibophezela kwethu Ekusunguleni, Ukuhlukahluka kanye Nokusimama kuqinisekisa ukuthi i-SMT automation ifinyeleleka kuwo wonke umuntu wokuzilibazisa kuyo yonke indawo.
Isikhathi sokuthumela: Aug-09-2023