Energy monitoring chip:
Most of the manufacturers of the smart plug provide onboard energy monitoring chips to monitor the household power supply or single-phase energy, active power, current, voltage, and other important values for the connected load. For this purpose BL0937 IC is most popular in smart devices.
It is an important section in the logic board that provides essential dc power sully to wireless and relay modules for proper operation. Generally, it contains several electronic components similar to a mobile phone charger.
This part of the logic board works as an electromechanical switch. When the smart plug gets a command from the user, it changes the state of the relay. In simple terms, we can say that once the command received relay turns ON or OFF state to change the output state (Turning ON or OFF to connected device like table lamp, fans).
It does not play a direct role in the operation of this gadget but RF-shielding is important in every wireless connectivity-based device. RF-shielding is also known as electromagnetic shielding and it is mainly responsible to reduce the effect of the electromagnetic field in a space by blocking the field with barriers made of magnetic materials. This covering protects the sensitive electronic components from magnetic fields that increase their life. Here, wireless module IC’s are protected by RF shielding.