国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

To study the transient thermal characteristics of semiconductor devices, the small,quick and high-precision thermostat systems based on TEC is developed. Discussed the rapid heating and cooling system design based on STM32F103RBT6, the hardware system includes the system controller chips STM32F103RBT6, constant temperature driver circuit, thermo-electric cooler (TEC) and temperature acquisition circuit, digital PID(Proportion Integration Differentiation) algorithm adjusted PWM(Pulse-Width Modulation) pulse width modulated signal output in real time until the temperature fluctuation within a preset range of accuracy. The system uses an H-bridge circuit to achieve rapid heating and cooling, Constant temperature driver circuit using hybrid filter composed of passive and active filters greatly reduced current ripple and improve the accuracy of temperature control system. Experimental results show that the thermostatic system is reliable, high control precision, fast heating and cooling, there are certain value of practical and promotion of aspects in the development of micro thermostat system.