Abstract: A power line communication (PLC) AC/DC adaptor includes a filter, a rectifier, a power factor correction circuitry, and a PLC module. The filter includes a differential mode choke and a common mode choke. The differential mode choke is coupled to AC. The common mode choke is coupled to the differential mode choke. The rectifier is coupled to the common mode choke. The power factor correction circuitry is coupled to the rectifier. The PLC module is coupled to AC to process a PLC signal from AC and output a control signal.