【摘要】 为了对元件性能进行优化设计,根据TiO₂压敏电阻的几何尺寸及元件与材料之间电性能参数的函数关系,分析计算了极间电压V_10mA不大于30 V,非线性系数α₁为3⁵,1 k Hz下极间电容C不小于10 nF的环形元件所需材料的参数分别为:相对介电常数不小于1.22×10⁵,电流强度分别为10 mA和1 mA时所对应的电流密度J₁₀大于10×10^–3A·cm^–2及J₁大于1×10^–3A·cm^–2,在材料的J-E非线性曲线上,电场强度E₁₀大于E_10mA,E₁大于E_1mA,且E₁₀与E₁的比值大于1而小于E_10mA与E_1mA的比值。更多还原

【Abstract】 In order to optimize the performances of the ring viristor, the performance parameters of the ceramic material were calculated based on the geometry size of TiO₂ varistor and the relationship of electric performance parameters between component and ceramic material. When the component parameters are as follows: electrode voltage V_10mA is less than 30 V, nonlinear coefficient α₁ is in the range of 3–5 and the electric capacity C is larger than 10 nF, the material parameters of relative dielectric constant εr is less than 1.22×10⁵, current density J₁₀ is less than 10×10^–3A·cm^–2 and J₁ is larger than 1×10^–3A·cm^–2, electric field strength E₁₀ is larger than E_10mA, E₁ is larger than E_1mA, and the ratio of E₁₀ to E₁ is larger than 1 and less than the ratio of E_10mA to E_1mA.更多还原