/challenges-projects/design-challenges/design-for-a-cause-2021/b/blog/posts/vacbag-overall-schematic-blog-2Blog#3--> <--Blog#1 Overall Schematic Fixed DC power supply 20V 3A(input to driver IC)-->Variable Buck converter-->L289n driver->C1_Peltier/TEC,C2_DC-FANsupply control for possible low power using PID control scheme Temp...en-USTelligent Community 12