Ibigize hamwe nihame ryakazi rya electret condenser mikoro

Ku ya 21 Ukuboza 21:38:37 CST 2021

Mikoro ya electret igizwe na acoustic yamashanyarazi no guhinduranya impedance.Ikintu cyingenzi cyo guhindura acoustoelectric ni diaphragm ya electret.Ni firime ya plastike yoroheje cyane, aho igice cya firime nziza ya zahabu ihumeka kuruhande rumwe.Noneho, nyuma ya electret yumuriro wamashanyarazi mwinshi, hari amafaranga ya anisotropique kumpande zombi.Ubuso bwa zahabu bugizwe na diafragm ni hanze kandi buhujwe nicyuma.Urundi ruhande rwa diafragma rutandukanijwe nicyapa cyicyuma nimpeta yoroheje.Muri ubu buryo, hakorwa ubushobozi hagati ya firime ya zahabu ihumeka hamwe nicyapa.Iyo diafragm ya electret ihuye no kunyeganyega kwa acoustic, umurima wamashanyarazi kumpande zombi za capacitori urahinduka, bikavamo guhinduranya imbaraga zitandukanye hamwe nimpinduka ya acoustic.Ubushobozi buri hagati ya diaphragm ya electret na plaque yicyuma ni gito, muri rusange PF mirongo.Kubwibyo, umusaruro wacyo impedance agaciro ni hejuru cyane (XC = 1/2 ~ TFC), hafi megaohms mirongo cyangwa irenga.Inzitizi ndende ntishobora guhuzwa neza na amplifier amajwi.Kubwibyo, ihuriro ryimikorere ya transistor ihujwe na mikoro kugirango ihindurwe.FET irangwa no kwinjiza kwinshi hamwe n urusaku ruke.FET isanzwe ifite electrode eshatu: electrode ikora (s), electrode ya gride (g) na electrode (d).Hano, FET idasanzwe hamwe nindi diode hagati yimbere yimbere na gride irakoreshwa.Intego ya diode ni ukurinda FET ingaruka zikomeye zerekana ibimenyetso.Irembo rya FET rihujwe nicyapa.Muri ubu buryo, hari imirongo itatu isohoka ya mikoro ya electret.Nukuvuga ko inkomoko s muri rusange insinga ya pulasitike yubururu, imiyoboro D ni insinga itukura ya plastike itukura hamwe ninsinga ikingira ikingira icyuma.