Devices and methods for fault indication connector circuits

A method of operating an electronic device that is configured to be coupled to an alternating current (AC) power unit, the method comprising:

• generating a reference signal based on a direct current (DC) power source;
• scaling the reference signal for application to an AC input power signal from the AC power unit to generate a divided AC input power signal;
• generating a fault indication signal responsive to the divided AC input power signal;
• and
• controlling a fault indication signal level of the fault indication signal.

An electronic device that is configured to be coupled to an alternating current (AC) power unit that comprises an AC input power signal, an AC neutral power signal, and an AC ground power signal, the electronic device comprising:

• a housing comprising an interface to the AC power unit;
• a reference signal generator circuit that is configured to generate a reference signal based on a direct current (DC) power source;
• a voltage divider circuit that is configured to scale the reference signal for application to the AC input power signal, the AC neutral power signal, and/or the AC ground power signal to generate divided AC power signals;
• an amplifier circuit that is configured to output fault indication signals responsive to the divided AC power signals;
• an amplifier control circuit that is configured to control the fault indication signal levels of the fault indication signals that are output by the amplifier circuit;
• and
• a plurality of Light Emitting Diodes (LEDs) coupled to the housing, wherein the plurality of LEDs are controlled based on the fault indication signals.