处于200~300摄氏度时,二氧化锡吸附空气中的氧,形成氧的负离子吸附,使半导体中的电子密度减少,从而使其电阻值增加。当与烟雾接触时,如果晶粒间界处的势垒收到烟雾的调至而变化,就会引起表面导电率的变化。利用这一点就可以获得这种烟雾存在的信息,烟雾的浓度越大,导电率越大,输出电阻越低,则输出的模拟信号就越大。
Pamadhora mazana maviri kusvika mazana matatu Celsius, tin dioxide inoshambadza okisijeni mumhepo, ichiumba okisijeni isina kunaka ion adsorption, iyo inoderedza huwandu hwemagetsi mu semiconductor uye inowedzera kukosha kwayo kwekudzivirira. Kana uchinge wasangana nehutsi, kana chipingamupinyi pamuganhu wezviyo chakagadziriswa nehutsi kuti uchinje, zvinokonzeresa shanduko mune yekumusoro conductivity. Uchishandisa pfungwa iyi, ruzivo nezve kuvapo kwerudzi urwu rweutsi runogona kuwanikwa.
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Panguva 200 ~ 300 °C, SnO2 adsorbs oxygen in the air to form oxygen anion adsorption, which reduces the electron density in the semiconductor and increases its resistance.Kana vachitsvaka novutsi, kana chidzitiro pamuganho wezviyo chinoshandurwa noutsi, kushanduka kwokufamba kwenyika kuchashandurwa.Kana tichiitira chinhu ichi, tinogona kutsvaka rugwaro rwokuvapo rwomusi uyu. Kana zviri kumusoro, kutsika kwoutsi kukuru kuno, uye kudzika kwokudzivisa kuno, kukuru kuno chiratidzo chenguva kuno.<br>
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