Controlling a controllably conductive device based on zero-crossing detection

A load control method, comprising:

• identifying, by a control circuit operatively coupled to a controllably conductive device and a zero-cross detect circuit, a rising-edge time and a falling-edge time of one or more pulses of the zero-cross detect circuit responsive to application of an alternating current (AC) supply voltage to the zero-cross detect circuit;
• determining, by the control circuit, an actuation adjustment time period using an actuation delay time period and an average contact-bounce duration;
• storing the determined actuation adjustment time period value in a memory circuit operatively coupled to the control circuit;
• initiating, by the control circuit, a transition of the conductive state of the controllably conductive device at the conclusion of the determined actuation adjustment time period;
• monitoring, by the control circuit, a switched AC voltage to detect at least one of a rising-edge of the switched AC voltage or a falling-edge of the switched AC voltage;
• and
• determining, by the control circuit, whether the at least one of the rising-edge of the switched AC voltage or the falling-edge of the switched AC voltage falls within a defined error window.

A non-transitory, machine-readable, storage device that includes instructions that when executed by a control circuit operatively coupled to a controllably conductive device and a zero-cross detect circuit couplable to an alternating current (AC) supply voltage, cause the control circuit to:

• identify a rising-edge time and a falling-edge time of one of the pulses of the zero-cross signal generated by the zero-cross detect circuit;
• determine an actuation adjustment time period using an actuation delay time period and an average contact-bounce duration;
• store the determined actuation adjustment time period value in a memory circuit;
• initiate a transition of the conductive state of the controllably conductive device at the conclusion of the determined actuation adjustment time period;
• monitor a switched AC voltage to detect at least one of a rising-edge of the switched AC voltage or a falling-edge of the switched AC voltage;
• and
• determine whether the at least one of the rising-edge of the switched AC voltage or the falling-edge of the switched AC voltage occurs within a defined error window.