摘要：介绍一种高精度的、采用PID 控制原理的温度控制器, 给出了实验结果。这种控制器适用于小功率半导体器件的工作温度控制, 其控制精度可达±0.05℃。-Abstract: A high-precision, using the temperature controller PID control theory, the experimental results. The controller for small power semiconductor device operating temperature control, the control precision can reach ± 0.05 ℃.