A Constant Temperature Circuit Design Applied to the AD Converter Module
LI Zheng-fe · Electrical Automation · 2015
This research is focused on a constant temperature control circuit. A simple stable constant temperature circuit is realized by using thermistor as temperature-measuring element and heating the heat resistor. When ambient temperature varies in the range of-25 ℃to + 75 ℃,the constant temperature control circuit keeps temperature change in the thermostatic box within ± 1 ℃,thus ensuring that the AD sampling module can work in a constant environment and precision drift of high-precision devices caused by temperature change can be minimized.