A control circuit is an essential part of electrical systems that allows for the control and management of various electrical devices. It acts as a relay point between a power source and devices, receiving input from sensors and sending instructions to control the actions of connected devices.

Thermal management in electronics refers to the methods and technologies used to regulate and disperse heat produced by electronic devices. This process helps to maintain optimal performance, reliability, and lifespan of components by avoiding overheating and dealing with thermal issues like hotspots and temperature fluctuations.