/challenges-projects/design-challenges/design-for-a-cause-2021/b/blog/posts/vacbag---system-control-blog-4Blog#5--> <--Blog#3 SYSTEM CONTROL Heat reject control: Combination of Single-TEC module & Fan-heat sink assemblyFan control: PWM signal function of Heat-sink TemperatureInner temperature control: PWM function of Inner temperature ...en-USTelligent Community 12