The impedance and modulus of positive temperature coefficient resistance ( PTCR ) ceramics were analyzed and simulated by resistor-capacitor electric elements based on a mathematical model via a computer program. 通过建立数学模型,编制了具有不同数量等效电阻-电容(resistorcapacitor,RC)电路结构单元的正温度系数电阻(PositiveTemperatureCoefficientResistance,PTCR)陶瓷的复阻抗频谱的计算机程序。