Electret makarafoonka

makarafoonka Electret waa nooc ka mid ah mikroofanada ay condenser. Xaaladaha intooda badan, mikroofanada kuwaas waxaa loo isticmaalaa in istuudiyaha xirfadeed, laakiin sidoo kale waxaa laga yaabaa in ku haboon yahay ujeedooyin hiwaayadda. Sida caadiga ah, ee mikroofanada ay electret capacitor inta badan loo isticmaalaa in lagu qalabeeyo istuudiye lagu duubo heesaha guri.

In suuqa Ruush casriga ah ka heli kartaa kala duwan weyn ee qalabka. Ka mid ah soo jeedinta hadda dooran kartaa makarafoonka electret, wax soo saarka gudaha iyo midda dibadda labadaba. Haddii aan ka hadlo arrimaha kharashka, ee mikroofanada ay soo saarka shisheeye waa ka qaalisan Ruush ah. Xaaladaha intooda badan, kororkan sicirka waxaa aan wax badan xaq sida makarafoonka electret saarka Ruush waa ineysan ee tayo leh kuwa shisheeye.

Currently mikroofanada ay ficil ahaan bedelay mikroofanada noocan isagoo design kala duwan. Sababtuna waxay tahay, in makarafoonka electret kharash aad u yar yahay waxaa lagu gartaa isku halaynta sare, miisaan hoose iyo jawaab inta jeer guri.

Mikroofanada noocan ah waa capacitors, kuwaas oo qaarkood taarikada ka samaysan yihiin fidiyey giraan ah film aad u dhuuban. bac waxaa gubaa leh dogob ee electrons in gelin si qoto dheer u yar, oo ay sabab u abuuraan lacag meel isagoo awood u leh inay badbaadin muddo dheer ah.

In noocan ah insulators leeyihiin magaca "electret" - si ay makarafoonka waxaa kaloo loo yaqaan electret ah.

Ka dibna waxa superimposed on filimka waa lakabka bir ku filan oo khafiif ah, kaasi oo loo adeegsaday mid ka mid ah electrodes ah. Sida koronto kale fiiqan dhululubo bir, kuwaas oo planar dusha waxa uu ku yaalaa meel u dhow filimka.

oscillations Its oo waxaa sababa hirarka loomana baahno, oo awood u abuuraya koronto u dhexeeya elektaroodhada. Sababo la xaqiiqada ah in xoogga hadda waa ku filan yar iyo impedance saarka gaaro gigaomov, signal gudbinta ee ay makarafoonka, ka dhigay kuwo ku adag. Sidaas darteed, si ay u dhigma impedance hoose ee kordhiyo la makarafoon impedance sare, waxaa lagama maarmaan ah in la isticmaalo yada ku habboon a, oo waxaa loo qabanqaabiyaa garoonka (unipolar) transistor, kuwaas oo loo diyaarin guri kaabsal makarafoonka.

guryaha ee kaabsal waa in la sameeyey oo bir ah oo awood u leh baaritaanka makarafoon iyo isku hagaajiyaan stage, waxaa ilaalinaya beeraha korontada dibadda.

Sida caadiga ah, kaabsal halkan waa qalab kuwaas oo guryaha ma aha oo kaliya makarafoon laftiisa electret, laakiin sidoo kale masraxa ku habboon ka.

Si aad u fahamto in ku haboon yahay makarafoonka electret ama in kordhiyo makarafoon, waa ku filan tahay in ay ku xidhmaan Jack aqbasho of multimer ah. Haddii natiijada ka mid ah qalabka ay muujinaysaa 2-3 volts, taas macnaheedu waa in kordhiyo ku haboon in loo isticmaalo la makarafoonka electret waa. Qaar badan oo Sammeecado makarafoonka loo isticmaalaa in qaar ka mid ah kaarka codka computer ama dhisay-in, kaas oo lagu xisaabiyaa sida wakhti la leh makarafoonka electret shaqeeyaan.

Mabda'a hawlgalka ee mikroofanada ay electret ku salaysan yahay awooda qalabka qaar ka mid ah la joogto dielectric sare, bedesho lacag dusha ay sabab u ah saamaynta ay la ruxruxo dhawaaqa. mikroofanada ay Electret leeyihiin iska caabin aad u dheer, sidaa darteed in ay macquul tahay in iyaga xirmaan kordhiyo la impedance aqbasho sare.

By design, mikroofanada ay waxyaalahan waxaa loo kala qaybiyey saddex qaybood: wax electret waa in booska hore, wax Electret waxaa laga codsadaa in xuub dabacsan, electret waa on waslad khafiif ah oo dib.

Si aad u taariikhda, hoggaamiye ee wax soo saarka ee qalabka wax lagu qoro xirfadeed waa shirkadda "Shemiiniid", kuwaas oo mikroofanada ay leeyihiin sumcad ay jariiradu.

"Shemiiniid" FEM - Taxanaha, oo ay ku jiraan dhowr naqshadood ee mikroofanada ay electret xirfad, kuwaas oo loogu talagalay xaaladaha kala duwan ee la isticmaalo. fiiro gaar ah in la bixiyo, in ay cibaaro ee shirkadda - makarafoon, "Shemiiniid" FEM - 222, kaas oo loogu talagalay shirarka lagu qoro.