Abstract: There is provided a high frequency AC inverter comprising a DC-DC circuit, an output power circuit and a load circuit and a controller, the load circuit comprising a load circuit detector configured to detect the electrical parameters of the load circuit. The output power circuit comprises a DC to AC driver having a variable frequency output, a HFAC driver circuit comprising a resonant network and a transformer coupled to the HFAC driver circuit and the load circuit. The controller is configured to control the output frequency of the DC to AC driver and the output of the DC to DC circuit in response to the detected electrical parameters of the load circuit.

Abstract: An aspect of the disclosure provides a high frequency alternating current (HFAC) power distribution system configured to provide an HFAC power supply on an HFAC power supply bus to enable a plurality of electronic devices to be connected to the power supply bus for receiving HFAC electrical energy, the power distribution system comprising: an HFAC power supply configured to provide HFAC electrical energy to the HFAC power supply bus and having power supply output terminals for coupling to said bus; a protection circuit connected to the power supply and being arranged to provide a short circuit of the power supply; a power supply inhibitor operable to disable the power supply to prevent the provision of electrical energy; a detector circuit, configured to monitor gamma radiation to provide a detection signal; and a controller configured to operate the power supply inhibitor to prevent the provision of electrical energy in the event that the detection signal exceeds a threshold and then subsequently to operate

Abstract: There is provided a high frequency AC inverter comprising a DC-DC circuit, an output power circuit and a load circuit and a controller. The load circuit comprises a load circuit detector configured to detect the electrical parameters of the load circuit. The output power circuit comprises a DC to AC driver having a variable frequency output, a HFAC driver circuit and a transformer coupled to the HFAC driver circuit and the load circuit.

Abstract: A method of protecting a power transformer (101) in a power supply distribution grid (100) is described. The method comprises monitoring low frequency electrical signals in a circuit coupled to the power transformer (101) to provide a first detection signal (211); monitoring electromagnetic radiation to provide a second detection signal (212); in the event that the first detection signal (211) exceeds a first threshold, operating a protection switch (204a) connected to the transformer (101) to break the circuit and to reconnect the circuit in response to the first detection signal dropping below the first threshold; in the event that the second detection signal exceeds a second threshold, operating the protection switch (204a) to break the circuit at least until the first detection signal has dropped below the first threshold.

Abstract: According to the invention there is provided a HFAC power supply configured to be powered by a DC supply, the HFAC power supply comprising a power circuit, a load circuit and a controller, the power circuit and the load circuit being inductively coupled, the power circuit comprising a voltage regulator configured to output an output voltage, a DC to AC driver and a driver circuit comprising an LC resonant bridge circuit and a primary inductor inductively coupled to the load circuit.

Abstract: An aspect of the disclosure provides an electronic device comprising: a first substrate comprising a first ground plane and a second ground plane, wherein the first ground plane and the second ground plane are arranged to provide a shielded volume there between. The electronic device also comprises a first high frequency alternating current (HFAC) power distribution bus disposed in the shielded volume, wherein the first HFAC power distribution bus is configured for connecting to a first HFAC power supply. A first power supply connection for connecting the first HFAC power supply to the first HFAC power distribution bus and a component connection for connecting the first HFAC power distribution bus to electronic components carried by the first substrate are also provided.

Abstract: There is provided a high frequency AC inverter comprising a DC-DC circuit having a variable output, an output power circuit and a load circuit and a controller, the load circuit comprising a load circuit detector configured to detect the electrical parameters of the load circuit. The output power circuit comprises a DC to AC driver having a variable frequency output, a HFAC driver circuit comprising a resonant network and a transformer coupled to the HFAC driver circuit and the load circuit. The controller is configured to control the output of the DC to DC circuit to control the current on the load circuit to maintain it within a predetermined range.

Abstract: An inductively powered device driver comprising a secondary winding to be coupled to a primary winding and a ferrite core formed of two separable parts, and further comprising a permanent magnet attached to each part of the ferrite core. The permanent magnet(s) are preferably separated from the ferrite core by an insulator. One part of the ferrite core preferably comprises a metal plate positioned between the two parts of the ferrite core.

Abstract: The disclosure provides disinfection devices and lighting devices. For example, there is provided a lighting device configured to be driven by an HFAC power supply, the lighting device comprising a light, a first circuit comprising a first secondary coil electrically connected to the light and configured to be coupled to an HFAC power supply, a second circuit electrically connected to the light and comprising a secondary coil configured to be coupled to an HFAC power supply, a HFAC to DC converter, a DC to AC driver, a clock pulse generator and a transformer.

Abstract: According to the invention there is provided a HFAC power supply configured to be powered by a DC supply, the HFAC power supply comprising a power circuit, a load circuit and a controller, the power circuit and the load circuit being inductively coupled, the power circuit comprising a voltage regulator configured to output an output voltage, a DC to AC driver and a driver circuit comprising an LC resonant bridge circuit and a primary inductor inductively coupled to the load circuit.

Abstract: An inductively powered device driver comprising a secondary winding to be coupled to a primary winding and a ferrite core formed of two separable parts, and further comprising a permanent magnet attached to each part of the ferrite core. The permanent magnet(s) are preferably separated from the ferrite core by an insulator. One part of the ferrite core preferably comprises a metal plate positioned between the two parts of the ferrite core.

Abstract: There is provided a high frequency AC inverter comprising a DC-DC circuit having a variable output, an output power circuit and a load circuit and a controller, the load circuit comprising a load circuit detector configured to detect the electrical parameters of the load circuit. The output power circuit comprises a DC to AC driver having a variable frequency output, a HFAC driver circuit comprising a resonant network and a transformer coupled to the HFAC driver circuit and the load circuit. The controller is configured to control the output of the DC to DC circuit to control the current on the load circuit to maintain it within a predetermined range.

Abstract: There is provided a high frequency AC inverter comprising a DC-DC circuit, an output power circuit and a load circuit and a controller, the load circuit comprising a load circuit detector configured to detect the electrical parameters of the load circuit. The output power circuit comprises a DC to AC driver having a variable frequency output, a HFAC driver circuit comprising a resonant network and a transformer coupled to the HFAC driver circuit and the load circuit. The controller is configured to control the output frequency of the DC to AC driver and the output of the DC to DC circuit in response to the detected electrical parameters of the load circuit.

Abstract: There is provided a high frequency AC inverter comprising a DC-DC circuit, an output power circuit and a load circuit and a controller. The load circuit comprises a load circuit detector configured to detect the electrical parameters of the load circuit. The output power circuit comprises a DC to AC driver having a variable frequency output, a HFAC driver circuit and a transformer coupled to the HFAC driver circuit and the load circuit.

Abstract: A method for manufacturing a planar electronic device includes applying a non-conductive fluid polymer to a lower side of a planar substrate. The substrate includes a hole extending through the substrate. The method also includes curing the fluid polymer to form a solid centering layer on the lower side of the substrate, with the centering layer extending across the hole along the lower side of the substrate. The method further includes loading a ferrite material body into the hole of the substrate through the upper side of the substrate, embedding the ferrite material body in an encapsulating material in the hole, and forming one or more conductive loops around the ferrite material body. The ferrite material body is held within the substrate between the lower side and the upper side of the substrate by the encapsulating material.

Abstract: An object tracking system includes a wireless device having a first antenna, a first transceiver coupled to the first antenna, and a sensor coupled to the first transceiver and configured to monitor a parameter of the vehicle. The parameter is related to an operational state of the vehicle. The object tracking system also includes a mobile communication device having a second antenna, a second transceiver coupled to the second antenna and configured to communicate with the wireless device, and a processor coupled to the second transceiver. The processor is operable to generate a first list of objects when the vehicle is in a first operational state, generate a second list of wireless when the vehicle is in a second operational state, and compare the second list of objects to the first list of objects.

Abstract: Systems and methods are presented for an improved high power density power adapter. On one potential embodiment, an improved power adapter includes an AC input; a rectifier coupled to the AC input; a power factor correction circuit coupled to the rectifier; and a burst switch circuit coupled to the power factor correction circuit. The burst switch circuit provides power to a DC output via a set of FET drivers, a set of FETs, and a transformer and may provides power exclusively in a burst mode using a feedback input from the DC output. The transformer may be composed of windings coupled to the set of FETs, and additional windings embedded in the PCB and coupled to the first winding. Certain windings may comprise a conductive ribbon that loops around a transformer core. Additional embodiments may include monitoring circuits and multiple outputs.

Abstract: Systems and methods are presented for an improved high power density power adapter. On one potential embodiment, an improved power adapter includes an AC input; a rectifier coupled to the AC input; a power factor correction circuit coupled to the rectifier; and a burst switch circuit coupled to the power factor correction circuit. The burst switch circuit provides power to a DC output via a set of FET drivers, a set of FETs, and a transformer and may provides power exclusively in a burst mode using a feedback input from the DC output. The transformer may be composed of windings coupled to the set of FETs, and additional windings embedded in the PCB and coupled to the first winding. Certain windings may comprise a conductive ribbon that loops around a transformer core. Additional embodiments may include monitoring circuits and multiple outputs.

Abstract: A method for manufacturing a planar electronic device includes applying a non-conductive fluid polymer to a lower side of a planar substrate. The substrate includes a hole extending through the substrate. The method also includes curing the fluid polymer to form a solid centering layer on the lower side of the substrate, with the centering layer extending across the hole along the lower side of the substrate. The method further includes loading a ferrite material body into the hole of the substrate through the upper side of the substrate, embedding the ferrite material body in an encapsulating material in the hole, and forming one or more conductive loops around the ferrite material body. The ferrite material body is held within the substrate between the lower side and the upper side of the substrate by the encapsulating material.

Abstract: There are provided according to the invention, novel compounds of formula (I) wherein R1, R2, R3, R4, R5, X, a, b and Z are as defined in the specification, processes for preparing them, formulations containing them and their use in therapy for the treatment of inflammatory diseases.