Patent ID: 9736911
Date: 2017-08-15
CPC Classifications: H05B,Y02B

Claim:
1. A load control system for controlling an electrical load receiving power from an AC power source, the load control system comprising: a load control device for controlling the electrical load; and a controller adapted to be coupled in series electrical connection between the AC power source and the load control device to conduct a load current from the AC power source to the electrical load, the controller operable to produce a phase-control voltage is adapted to be received by the load control device, wherein the phase-control voltage comprises an AC voltage that is characterized by a conduction period for a portion of each half-cycle; wherein the controller is operable to transmit a digital message to the load control device for controlling the load by encoding digital information in timing edges of the phase-control voltage, the phase-control voltage having at least one timing edge in each half-cycle of the AC power source when the controller is transmitting the digital message to the load control device.