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日本费加罗工程公司发展了一种新型半导体元件,应用这种半导体元件可以指示气体情况,并进行测量。这种半导体元件对气体非常敏感,甚至连香烟的烟及乙醇的气味都能分辨出来。元件的型号标记为TGS,它由氧化锌、氧化锡和氧化铁,亦即由含氧的物质所构成。元件在和气体,诸如氢、二氧化碳、甲烷、丙烷、乙醇、乙炔等等接触时,其电导率就会改变,亦即电阻值降低。电阻率变化越大,元件越敏感。这一电阻的变化在大部份情况下,足
Figaro Engineering Company in Japan has developed a new type of semiconductor device that can indicate the gas situation and measure it. This semiconductor device is very gas sensitive, and even the smell of tobacco smoke and ethanol can be identified. The part number is labeled TGS and consists of zinc oxide, tin oxide and iron oxide, ie, oxygen-containing substances. When in contact with gases such as hydrogen, carbon dioxide, methane, propane, ethanol, acetylene and the like, the conductivity of the element changes, that is, the resistance decreases. The greater the change in resistivity, the more sensitive the element. This resistance change in most cases, enough