Design and Fabrication of Thermostat for the Hydrogen Maser

In this paper, a temperature thermostat used for the hydrogen maser is designed and fabricated based on the analysis of heat dissipation of the hydrogen maser. The high power and precise temperature control is realized by using the PID temperature control and semiconductor refrigeration techniques in the design and fabrication of thermostat. Under the condition of 300 W heat dissipation, the temperature fluctuation is within ±0.05 ℃, better than the existing similar products in the worldwide. The thermostat could provide excellent temperature environment for a high performance hydrogen maser.