介绍一种高稳定的温度控制电路,该电路采用锁相放大方法对温度的微小变化进行检测,利用半导体制冷器进行温度的实时控制。在室温环境下,其温度稳定度可到10 - 3K量级。-Introduction of a highly stable temperature control circuit using phase-locked amplification method to detect small changes in temperature, the use of semiconductor cooler the temperature of the real-time control. At room temperature, its temperature stability can be 10- 3K order of magnitude.