Method and apparatus for providing both power and communication over two wires between multiple low voltage AC devices
October 2, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesCommunication systems Remote AC power control with control pulses at the zero crossing of the AC wave Process for transferring information and system for carrying out the process Power line control system Two-wire dc communication system and transceiver Arrangement for signal transmission between a transmitting station and a receiving station Local area method arrangement Method and system for the transmission of data and power Full duplex communication system with power transfer on one pair of conductors Patent #: 6320494 InventorsAssigneeApplicationNo. 10263009 filed on 10/02/2002US Classes:340/693.1, Specified power supply340/333, With specific power supply (e.g., power substitution)700/3, Master-slave340/825.26, Stock quotation323/207, Using converter375/257CABLE SYSTEMS AND COMPONENTSExaminersPrimary: Crosland, Donnie L.Attorney, Agent or FirmInternational ClassH04M011/04AbstractA system master unit is connected to a 24V AC power source. One or more slave units is connected to the master unit by a power/communication line. Bulk capacitance in the master and slave units stores power during a power source positive half cycle. When the source voltage is higher than the bulk capacitance voltages, power is delivered to the loads, during which time communication cannot take place over the power/communication line. During the power source negative half cycle, the power/communication line is disconnected from the AC power source and is then used for communication between the master and slave units. System power is delivered from the energy stored in the bulk capacitance. | |
