I. Isishwankathelo
Izinto ezithathu zophazamiseko lwe-electromagnetic zingumthombo wophazamiseko, indlela yophazamiseko, umamkeli wophazamiseko, i-EMC malunga nale miba yophando.Ezona ndlela zisisiseko zokucinezela ukungenelela kukukhusela, ukuhluza, ukubeka phantsi.Zisetyenziswa ikakhulu ukunqumla indlela yothumelo lophazamiseko.
Namhlanje sithetha ngokucoca kwe-EMC, ukulungiswa kwe-EMC kwiindlela zokucoca ezisetyenziswa ngokuqhelekileyo zineendlela ezahlukeneyo, oku kulandelayo siya kusekelwa kwezi ntlobo zeendlela zokucoca, uhlalutyo lwemiba efuna ingqalelo kwinkqubo yokusetyenziswa.
II.Uhluzo lwemagnethi
Ukuhluza imagnethi kungokungeniswa kwezinto ezinozibuthe kwisekethe, zinqande ukusasazwa kwengxolo ye-high-frequency and reflection, ngaloo ndlela kuncitshiswa ukuphazamiseka kwe-electromagnetic.Izinto eziqhelekileyo zemagnethi ziquka imisesane yamagnetic, iimagnethi zebar, iikhoyili, njl.
(1) Uluhlu lwefrikhwensi: Iimpawu zokuphindaphinda kwezihluzo zemagnethi zinciphisa uluhlu lwezakhelo zophazamiseko ezinokuthi zizicinezele ngokusebenzayo.Ke ngoko, xa ukhetha isihluzi samagnetic, kuyafuneka ukugqiba uluhlu olufunwayo lwamaza oxinzelelo kwaye ukhethe isihluzo esifanelekileyo.
(2) Uhlobo lwesihluzi: Iindidi ezahlukeneyo zezihluzi zemagneti zisebenza ngokwahlukileyo kwiindidi ezahlukeneyo zemithombo yokuphazamiseka.Umzekelo, izihluzi zemagnethi ze-loop zihlala zifanelekile kwimithombo yengxolo ephezulu, ngelixa izihluzi zekhoyili zifanelekile kwimithombo yengxolo ephantsi.Ngoko ke, xa ukhetha isihlungi samagnetic, iimpawu zomthombo wokuphazamiseka kunye neempawu zokucoca kufuneka ziqwalaselwe.
(3) Indawo yokufakela: Izihlungi zemagneti kufuneka zifakwe phakathi komthombo wokuphazamiseka kunye nezixhobo ezichaphazelekayo ukwenzela ukucoca ngokufanelekileyo ukuphazamiseka.Nangona kunjalo, kuyimfuneko ukuphepha ukubeka isihluzo samagnetic kwindawo yokushisa ephezulu okanye i-vibration ephezulu ukuqinisekisa ukuthembeka kunye nokuzinza kwayo.
(4) Uxhulumaniso oluphantsi: Uxhulumaniso lomhlaba lunempembelelo ebalulekileyo ekusebenzeni kweefilitha zamagnetic.Ukudibanisa ngokuchanekileyo ucingo lomhlaba kunokuphucula ukusebenza kwesihluzi, kuphuculwe isiphumo soxinzelelo kunye nokunciphisa ukuphazamiseka kwe-electromagnetic.
III.Isihluzi esinamandla
Isihluzi se-Capacitive: Ngokuzisa izinto ze-capacitive kwisekethe, i-high-frequency current ikhokelwa emhlabeni ukunciphisa imitha kunye nokusasazwa kokuphazamiseka kwe-electromagnetic.
(1) Iindidi ze-capacitors: Kukho iintlobo ezahlukeneyo ze-capacitors, ezifana ne-tantalum electrolytic capacitors, i-aluminium electrolytic capacitors kunye ne-ceramic capacitors.Iindidi ezahlukeneyo ze-capacitors zineentsebenzo ezahlukeneyo kwiintlobo ezahlukeneyo zefrikhwensi, ngoko kufuneka ukhethe i-capacitor efanelekileyo ngokwemeko ethile.
(2) Uluhlu lokuphindaphinda: Iimpawu zokuphindaphinda kwezihluzo ze-capacitive zinciphisa uluhlu lwamaza okuphazamiseka abanokuthi bacinezele ngokufanelekileyo.Ke ngoko, xa ukhetha izihluzi ze-capacitive, kuyafuneka ukugqiba uluhlu lwefrikhwensi yocinezelo olufunekayo kwaye ukhethe isihluzo esifanelekileyo.
(3) Ukukhethwa kwexabiso le-capacitance: Ixabiso le-capacitance ye-capacitor lichaphazela ngokuthe ngqo umphumo walo wokucoca, ixabiso elikhulu le-capacitance, bhetele umphumo wokucoca.Kodwa ungakhethi i-capacitance enkulu kakhulu, ukuze ungabi nefuthe elibi ekusebenzeni okuqhelekileyo kwesiphaluka.
(4) Iimpawu zobushushu: umthamo we-capacitor uya kutshintsha ngokutshintsha kweqondo lokushisa.Kwindawo yokushisa ephezulu, umthamo we-capacitor uya kuncipha, ngaloo ndlela uchaphazela umphumo walo wokucoca.Ngoko ke, xa ukhetha i-capacitors, kuyimfuneko ukuqwalasela iimpawu zabo zeqondo lokushisa kwaye ukhethe i-capacitors ngokuzinza kakuhle kweqondo lokushisa.
IV.Isihluzi se-impedance
Isihluzi se-Impedance: Ngokuzisa amacandelo e-impedance kwisekethe, isekethe ine-impedance ephezulu kwisignali ye-frequency ethile, ngoko ukunciphisa okanye ukuphelisa ukuphazamiseka kunye nengxolo.Amacandelo e-impedance aqhelekileyo abandakanya i-inductors, i-transformers, njl.
(1) Uluhlu lokuphindaphinda: Iimpawu zokuphindaphinda kwezihluzo ze-impedance zinciphisa uluhlu lwamaza okuphazamiseka abanokuthi bawacinezele ngokufanelekileyo.Ke ngoko, xa ukhetha isihluzi se-impedance, kuyafuneka ukugqiba uluhlu olufunwayo loxinzelelo kwaye ukhethe isihluzi esifanelekileyo.
(2) Uhlobo lwe-impedance: Iindidi ezahlukeneyo ze-impedance zineentsebenzo ezahlukeneyo kwiintlobo ezahlukeneyo zemithombo yokuphazamiseka.Ngokomzekelo, i-inductors ifanelekile kwimithombo yengxolo ephezulu, ngelixa i-transformers ifanelekile kwimithombo yengxolo ephantsi.Ngoko ke, xa ukhetha izihlungi ze-impedance, kuyimfuneko ukwenza ukhetho lwamanani afanelekileyo ngokweempawu zomthombo wokuphazamiseka kunye neempawu zokucoca.
(3) I-impedance ehambelanayo: Umphumo we-impedance filters uchaphazeleka ngokuhambelana ne-impedance.Ukuba i-impedance ayihambelani, ngoko umphumo wokucoca uya kuncitshiswa kakhulu.Ngoko ke, xa uyila kwaye ufaka izihlungi ze-impedance, kuyimfuneko ukuqinisekisa ukuba i-impedance ihambelana kwaye udibaniso olufanelekileyo lusetyenziswa.
(4) Indawo yokufakela: Iifilitha ze-impedance kufuneka zifakwe phakathi komthombo wokuphazamiseka kunye nezixhobo ezichaphazelekayo ukwenzela ukucoca ngokufanelekileyo ukuphazamiseka.Nangona kunjalo, kuyimfuneko ukuphepha ukubeka i-impedance filter kwindawo yokushisa ephezulu okanye i-vibration ephezulu ukuze kuqinisekiswe ukuthembeka kwayo kunye nokuzinza.
(5) Uxhulumaniso lweGround: Ukuxhamla komhlaba okwaneleyo kuyisitshixo sokuqinisekisa ukusebenza kwezihlungi ze-impedance.Ukudibanisa ngokuchanekileyo ucingo lomhlaba kunokuphucula ukusebenza kwesihluzi se-impedance, ukuphucula isiphumo soxinzelelo kunye nokunciphisa ukuphazamiseka kwe-electromagnetic.
V. Band Pass Ukuhluza
Ukuhluza i-band-pass kuvumela imiqondiso kuluhlu oluthile lokuphindaphinda ukuba idlule ngelixa icinezela imiqondiso kwezinye iifrikhwensi.
(1) I-frequency Centre: I-frequency center ye-band-pass filter yi-frequency ye-signal yokudluliselwa, ngoko ke kuyimfuneko ukukhetha i-frequency center efanelekileyo.
(2) I-Bandwidth: I-bandwidth ye-bandpass filter ichaza i-frequency range ye-signal ukuba idluliselwe, ngoko ke kuyimfuneko ukukhetha i-bandwidth efanelekileyo.
(3) I-Passband kunye ne-Stopband: I-passband ye-bandpass filter ichaza uluhlu lwamafrikhwensi omqondiso odlulayo, ngelixa i-stopband ichaza uluhlu lwamafrikhwensi omqondiso ocinezelweyo.Xa ukhetha isihluzi, kuyimfuneko ukukhetha i-passband efanelekileyo kunye ne-stopband ranges ngokweemfuno zesicelo.
(4) Uhlobo lwesihluzi: Kukho iintlobo ezahlukeneyo zokucoca i-bandpass, njengezihluzo ze-second-order, i-Butterworth filters, i-Chebyshev filters, njl. Iintlobo ezahlukeneyo zokucoca zineempawu ezahlukeneyo.Iindidi ezahlukeneyo zokucoca zinentsebenzo eyahlukileyo, ngoko ke kuyimfuneko ukukhetha uhlobo olufanelekileyo lwesihluzi ngokwemeko yesicelo esithile.
(5) Ukuphendula rhoqo: Ukuphendula rhoqo kwesihluzo se-bandpass kunempembelelo ebalulekileyo ekusebenzeni kwayo.Ukuze kuqinisekiswe umgangatho wothumelo lwesignali, kuyimfuneko ukuqinisekisa ukuba impendulo ye-frequency ilula ngokusemandleni kwaye akukho nto ingafunekiyo ye-resonance kuyilo.
(6) Ukuzinza: Iifilitha ze-Band-pass kufuneka zigcine ukusebenza okuzinzile, ngoko ke kuyimfuneko ukukhetha amacandelo aphezulu kunye noyilo olufanelekileyo lwesekethe ukuqinisekisa ukuzinza kwe-zero yokuwela i-frequency kunye ne-amplitude.
(7) Ukutshintsha kweqondo lobushushu: Ukusebenza kwezihluzi ze-band-pass ziya kukhukuliseka ngenxa yotshintsho kwiqondo lobushushu elikhoyo.
VI.Isishwankathelo
Ukucoca yenye yeendlela eziqhelekileyo esizisebenzisayo ukusombulula iingxaki ze-EMC.Ukusombulula iingxaki ze-EMC kakuhle, kufuneka siyiqonde kakuhle ingxaki, senze izicwangciso, siphumeze iinkqubo, siqinisekise umphumo, siphucule ngokuqhubekayo kwaye someleze ulawulo.Kuphela ngale ndlela sinokuthi sisombulule ngempumelelo iingxaki ze-EMC kunye nokuphucula ukusebenza kwe-EMC yenkqubo.
I-Zhejiang NeoDen Technology Co., LTD., Yasekwa ngo-2010, ngumvelisi oqeqeshiweyo okhethekileyo kwi-SMT pick and place machine, i-oven reflow, umatshini wokushicilela we-stencil, umgca wemveliso we-SMT kunye nezinye iiMveliso ze-SMT.Sineqela lethu le-R & D kunye nemizi-mveliso yethu, sithatha ithuba le-R&D yethu etyebileyo, imveliso eqeqeshwe kakuhle, yaphumelela igama elihle kubathengi behlabathi ngokubanzi.
Sikholelwa ukuba abantu abakhulu kunye namahlakani enza iNeoDen ibe yinkampani enkulu kwaye ukuzinikela kwethu kuTshintsho, iyantlukwano kunye noZinzo kuqinisekisa ukuba i-SMT automation iyafikeleleka kuye wonke umntu othanda ukuzonwabisa kuyo yonke indawo.
Ixesha lokuposa: Aug-09-2023