最近,我们在研究工作中发现,经过适当施主掺杂的烧结型SnO_2气敏元件,在无需采用加热回路直接在元件两端加几伏直流电压的情况下,通过元件的电流值便产生周期性变化的振荡现象。元件在空气中,通过元件的电流值呈减幅振荡,最后趋于一相对稳定值。将 Recently, we found in the research, after appropriate donor doped sintered SnO 2 gas sensor without the use of heating circuit directly in the components plus a few DC voltage, the current value of the components will have a periodic Vibration phenomenon of change. Components in the air, the current value through the components showed a decrease of oscillation, and finally tends to a relatively stable value. will