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FAQs

Ndeapi maitiro uye maitiro emasefa?

(1) yakaderera pass sefa

Kubva pa0 kusvika paF2, iwo amplitude-frequency hunhu hwakatsetseka, izvo zvinogona kuita kuti ma frequency ezvikamu pazasi F2 apfuure neasingaite, nepo iwo akakwira kupfuura F2 akadzikiswa zvakanyanya.

(2) high-pass sefa

Kusiyana nekusefa kwepasi-pasi, maitiro ayo amplitude-frequency ari flat kubva frequency F1 kusvika infinity.Iyo inobvumira iyo frequency zvikamu zvechiratidzo chiri pamusoro peF1 kuti ipfuure nepakati isingaite, nepo idzo dziri pazasi F1 dzichizodzikiswa zvakanyanya.

(3) bhendi pass sefa

Passband yayo iri pakati peF1 neF2.Iyo inobvumira ma frequency ezvikamu zvechiratidzo chakakwira kupfuura F1 uye yakaderera pane F2 kuti ipfuure nepakati isina kutariswa, nepo zvimwe zvikamu zvakadzikiswa.

(4) band stop sefa

Kusiyana nekusefa kwebhendi, bhendi rekumira riri pakati pemafrequency F1 neF2.Iyo inoremedza iyo frequency zvikamu zvechiratidzo chakakwira kupfuura F1 uye yakaderera pane F2, uye mamwe ese ezvikamu zvefrequency anopfuura nepakati pezvisina kuverengerwa.

Chii chinonzi EMI simba sefa?

Electromagnetic interference (EMI) simba sefa chigadziriso chinoumbwa ne inductance uye capacitance.Iyo inonyatsoita semafirita maviri akaderera-pasi, imwe inoremedza zvakajairwa-modhi kupindira uye imwe inoderedza kupindira kwakasiyana-modhi.Iyo inoremedza rf simba mubhendi rekumira (kazhinji yakakura kupfuura 10KHz) uye inobvumira frequency yesimba kuti ipfuure nekuderera kana kusakwana.EMI magetsi mafirita ndiyo yekutanga sarudzo yemagetsi dhizaini mainjiniya kudzora anoitiswa uye neradiated EMI.

Ndeipi musimboti wekushanda weEMI simba sefa?

(A) Nekushandisa hunhu hwe capacitor inopfuura yakakwira frequency uye yakaderera frequency yekuzviparadzanisa nevamwe, iyo yakakwira frequency kukanganisa ikozvino yewaya mhenyu uye waya isina divi inounzwa muwaya yevhu (yakajairwa maitiro), kana iyo yakakwira frequency kukanganisa ikozvino kwewaya mhenyu inounzwa. kupinda mune yaakarerekera waya (kusiyana mode);

(B) Ratidza yakakwira-frequency kupindira ikozvino kumashure kune yekukanganisa sosi uchishandisa impedance maitiro eiyo inductor coil;

Chii chinofanira kutariswa pakugadzwa kwesefa?

Kuti uderedze kuramba kwepasi, iyo sefa inofanirwa kuiswa pane conductive simbi yepasi kana yakabatana nenzvimbo yepasi padyo kuburikidza neyakarukwa yepasi zone kudzivirira hombe yepasi impedance inokonzerwa netambo dzakatetepa dzekudzika.

Nzira yekusarudza sei simba sefa?

Ma index akati wandei anofanirwa kutariswa pakusarudza magetsi tambo sefa.Yekutanga yakayerwa voltage / yakayerwa ikozvino, inoteverwa nekuiswa kurasikirwa, kuvuza ikozvino (dc simba sefa haitarise saizi yekudonha yazvino), saizi yechimiro, uye pakupedzisira ndiyo bvunzo yevoltage.Sezvo mukati mesefa kazhinji kuumba, hunhu hwezvakatipoteredza hausi kunetseka kukuru.Nekudaro, iwo tembiricha hunhu hwehari uye iyo sefa capacitor ine imwe pesvedzero pane zvakatipoteredza maitiro emagetsi ekupa sefa.

Huwandu hwesefa inonyanya kutsanangurwa neiyo inductance musefa wedunhu.Iyo yakakura kuwanda kweiyo inductance coil, iyo yakakura huwandu hwesefa.