8results about "Systems using coupling circuits" patented technology

A device for managing photovoltaic modules according to one aspect includes: a communication unit for receiving a power line communication signal from at least one photovoltaic module array or transmitting the power line communication signal to the at least one photovoltaic module array; and a bypass unit forming a first communication path connecting the communication unit to the at least one photovoltaic module array, wherein the first communication path operates as an alternative path for a second communication path connecting the communication unit to the inverter.

An apparatus comprising a signal transformer coupled to a power line and a signal transmission, reception, or detection circuit. A sensor is configured to be responsive to the power line current or magnetic flux generated in a ferrite core of the signal transformer. When the sensor indicates that the flux generated by the power line current mat cause an attenuation of the signal strength, a second circuit generates a current through a flux cancelling winding that cancels at least some of the flux generated by the power line current.

According to one embodiment, an apparatus for managing solar modules includes a communication unit that receives a power line communication signal from at least one solar module array or transmits a power line communication signal to the at least one solar module array, and a bypass unit that forms a first communication path connecting the communication unit and the at least one solar module array, the first communication path operating as an alternative path to a second communication path connecting the communication unit and an inverter.

The disclosure discloses a back-end circuit for processing an analogue video signal and direct current power, a front-end circuit for processing an analogue video signal and direct current power and a Power Over Coaxia (POC) circuit for an analogue video signal. Each of the back-end processing circuit and the front-end processing circuit includes an analogue video signal passing circuit configured to block the direct current power and let the analogue video signal pass and a direct current power passing circuit configured to block the analogue video signal and let the direct current power pass, so that the analogue video signal may be isolated from the direct current power and the analogue video signal may be superimposed to the direct current power without mutual influence and exclusion to realize a function of superimposing the direct current power on an analogue high-definition video cable. Obviously, the back-end processing circuit and the front-end processing circuit are electrically connected with two ends of a coaxial cable respectively to implement simultaneous transmission of the direct current power and the analogue video signal on the coaxial cable, so that cost is reduced, and moreover, construction time is shortened.

A pool or spa control system includes a sensor system with one or more sensors in contact with a main body of water. The sensor system measures water condition data of the body of water and is mounted on a wall submerged in the main body of water. The pool or spa control system also includes a modem that facilitates data communications between the sensor system and communication equipment positioned at a different location from the main body of water.

A power control system includes a device that receives power from an electric line of a distribution system via a distribution transformer, an acquisition unit that acquires electric line information on the electric line, and a control unit that causes the device to generate a current used for adjustment of apparent power in the electric line based on the electric line information acquired by the acquisition unit.

A communications control system / switch fabric is disclosed that includes a serial communications interface and a parallel communications interface (e.g., for coupling input / output modules with a control module). The serial communications interface is configured for connecting input / output modules / slave devices to a control module / master device, and the parallel communications interface is configured for separately connecting the input / output modules / slave devices to the control module / master device.

The application relates to the field of power line communication, and discloses a power line communication system. The power line communication system can comprise a power conversion device, a signal isolation circuit, a signal adjustment circuit, a transformer and an operation circuit. The output end of the power conversion device is connected with a power line through the signal isolation circuit, the signal isolation circuit can be used for isolating an input signal of the power line to obtain a first noise signal of the power conversion device. The first input end of the signal adjustment circuit is connected with the output end of the power conversion device, the signal adjustment circuit can be used for inverting the phase of the first noise signal and outputting a second noise signal. The input end of the transformer is connected with the power line, the transformer can be used for filtering a power signal in the input signal of the power line to output a first signal. The operation circuit can be used for outputting a first communication signal according to the first signal and the second noise signal.