Abstract: A system includes a rectifier configured to rectify a line power having a line energy, a buck converter configured to generate a desired voltage output based on the rectified line power, and a bypass capacitor disposed between the rectifier and the buck converter, wherein the bypass capacitor is configured to bypass a switching energy of the buck converter to attenuate a plurality of pulses of the rectified line power that are not attenuated by the buck converter, and wherein the plurality of pulses correspond to harmonics of the rectified line power.

Abstract: The present disclosure is directed toward a control system and method for controlling a heater system. The control system includes a plurality of zone control circuits, a primary controller, a plurality of power controllers, and a plurality of sensor controllers. The zone control circuits are operable to provide power to a plurality of heater zones of the heater system and to measure performance characteristics of the zones. The power controllers are coupled to the plurality of zone control circuits to control power to the plurality of zones. The sensor controllers monitor operation of the heater zones based on the performance characteristics. The primary controller is coupled to the power controllers and is configured to provide an operation set-point for each of the heater zones based on the performance characteristics.

Abstract: The present disclosure generally describes a method and system for converting power to operate a load being supplied by line power having a line energy. The method includes rectifying the line power, bucking the rectified line power to generate a desired voltage output such that current is drawn from the line power in phase with the desired voltage output, and bypassing switching energy created during the bucking of the rectified line power.

Abstract: A power converter system includes a full-bridge isolating converter comprising a transformer, and a power controller configured to: operate the full-bridge isolating converter to generate an isolated output voltage, determine whether the transformer is operating in a flux walk state based on an electric current flowing through a primary winding of the transformer being greater than or equal to a flux current threshold, and generate instructions to adjust an input voltage applied to a plurality of heating elements of the heater in response to the transformer operating in the flux walk state.

Abstract: A power converter system includes an input rectifier configured to rectify a line power having a line energy and a full-bridge isolating converter comprising a transformer, where the full-bridge isolating converter is configured to generate an isolated output voltage based on the rectified line power, and where the isolated output voltage is electrically isolated from the line energy. The power converter system includes a power controller configured to operate the full-bridge isolating converter to generate the isolated output voltage, determine whether the transformer is operating in a flux walk state based on an electric current of the transformer, and perform a corrective action in response to the transformer operating in the flux walk state.

Abstract: Disclosed herein are systems and devices which are capable of detecting moisture and remotely indicating when the presence of moisture is detected. The systems utilize multilayer sensors that consist of two conductive layers surrounding an insulating, spacer layer. Nonwoven materials with conductive additives have shown particular advantages for use in constructing the conductive sensor layers. The system includes transmitter and receiver devices configured to provide indicators when moisture is detected through audible signals, vibration, visible signals or through notifications displayed on a software application. The conductive layers can also be placed in signal communication with a human body to draw electrical current to ground. Removing current results in the reduction of pain, improved sleep, and other physiological changes of clinical significance.

Abstract: Disclosed herein are systems and devices which are capable of detecting moisture and remotely indicating when the presence of moisture is detected. The systems utilize multilayer sensors that consist of two conductive layers surrounding an insulating, spacer layer. Nonwoven materials with conductive additives have shown particular advantages for use in constructing the conductive sensor layers. The system includes transmitter and receiver devices configured to provide indicators when moisture is detected through audible signals, vibration, visible signals or through notifications displayed on a software application. The conductive layers can also be placed in signal communication with a human body to draw electrical current to ground. Removing current results in the reduction of pain, improved sleep, and other physiological changes of clinical significance.

Abstract: Disclosed herein are systems and devices which are capable of detecting moisture and remotely indicating when the presence of moisture is detected. The systems utilize multilayer sensors that consist of two conductive layers surrounding an insulating, spacer layer. Nonwoven materials with conductive additives have shown particular advantages for use in constructing the conductive sensor layers. The multilayer sensor can be electrically coupled to a transmitter that is itself in electrical communication with one or more receiver devices. The transmitter and receiver devices are configured to provide indicators when moisture is detected through audible signals, vibration, visible signals or through notifications displayed on a software application. The sensor and/or the transmitter may be attached along a perimeter of the layers. The layered sensor may be affixed to an inside or outside of a package for location tracking, or may be attached to or incorporated in a diaper, as non-limiting examples.

Abstract: Disclosed herein are systems and devices which are capable of detecting moisture and remotely indicating when the presence of moisture is detected. The systems utilize multilayer sensors that consist of two conductive layers surrounding an insulating, spacer layer. Nonwoven materials with conductive additives have shown particular advantages for use in constructing the conductive sensor layers. The multilayer sensor can be electrically coupled to a transmitter that is itself in electrical communication with one or more receiver devices. The transmitter and receiver devices are configured to provide indicators when moisture is detected through audible signals, vibration, visible signals or through notifications displayed on a software application. The sensor and/or the transmitter may be attached along a perimeter of the layers. The layered sensor may be affixed to an inside or outside of a package for location tracking, or may be attached to or incorporated in a diaper, as non-limiting examples.

Abstract: The present disclosure is directed toward a control system for controlling a heater system. The control system includes a plurality of zone control circuits, at least two auxiliary controllers, and a primary controller. The zone control circuits are operable to provide power to a plurality of heater zones of the heater system and to sense performance characteristics of the zones. The auxiliary controllers are coupled to the plurality of zone control circuits to control power to the plurality of zones and to monitor operation of the heater zones based on the performance characteristics. The primary controller is coupled to the auxiliary controllers and is configured to provide an operation set-point for each of the heater zones based on the performance characteristics. The auxiliary controllers operate the zone control circuits to supply power to the heater system based on the operation set-point.

Abstract: A power converter system includes an input rectifier configured to rectify a line power having a line energy and a full-bridge isolating converter comprising a transformer, where the full-bridge isolating converter is configured to generate an isolated output voltage based on the rectified line power, and where the isolated output voltage is electrically isolated from the line energy. The power converter system includes a power controller configured to operate the full-bridge isolating converter to generate the isolated output voltage, determine whether the transformer is operating in a flux walk state based on an electric current of the transformer, and perform a corrective action in response to the transformer operating in the flux walk state.

Abstract: A power converter system provides adjustable power to a heater and includes an input rectifier and a full-bridge isolating converter. The input rectifier is configured to rectify a line power having a line energy. The full-bridge isolating converter configured to generate an isolated output voltage based on the rectified line power. The isolated output voltage is electrically isolated from the line energy.

Abstract: A power converter system provides adjustable power to a heater and includes an input rectifier and a full-bridge isolating converter. The input rectifier is configured to rectify a line power having a line energy. The full-bridge isolating converter configured to generate an isolated output voltage based on the rectified line power. The isolated output voltage is electrically isolated from the line energy.

Abstract: The present disclosure generally describes a method and system for converting power to operate a load being supplied by line power having a line energy. The method includes rectifying the line power, bucking the rectified line power to generate a desired voltage output such that current is drawn from the line power in phase with the desired voltage output, and bypassing switching energy created during the bucking of the rectified line power.

Abstract: The present disclosure generally describes a system that includes a heater, a power converter including a power switch, and a controller. The power converter is in communication with the heater and is operable to apply an adjustable voltage to the heater. The controller is in communication with the power switch to control the voltage output of the power converter based on at least one of a load current and a detected voltage at the heater. The controller operates the power switch to adjust the voltage output of the power converter.

Abstract: The present disclosure is directed toward a control system for controlling a heater system. The control system includes a plurality of zone control circuits, at least two auxiliary controllers, and a primary controller. The zone control circuits are operable to provide power to a plurality of heater zones of the heater system and to sense performance characteristics of the zones. The auxiliary controllers are coupled to the plurality of zone control circuits to control power to the plurality of zones and to monitor operation of the heater zones based on the performance characteristics. The primary controller is coupled to the auxiliary controllers and is configured to provide an operation set-point for each of the heater zones based on the performance characteristics. The auxiliary controllers operate the zone control circuits to supply power to the heater system based on the operation set-point.

Abstract: Devices, systems and methods for controlling the application of current and/or voltage to deliver drug from patient contacts of an electrotransport drug delivery device by indirectly controlling and/or monitoring the applied current without directly measuring from the cathode of the patient terminal. In particular, described herein are electrotransport drug delivery systems including constant current delivery systems having a feedback current and/or voltage control module that is isolated from the patient contacts (e.g., anodes and cathodes). The feedback module may be isolated by a transistor from the patient contacts; feedback current and/or voltage control measurements may be performed at the transistor rather than at the patient contact (e.g., cathode).

Abstract: The present disclosure generally describes a system that includes a heater, a power converter including a power switch, and a controller. The power converter is in communication with the heater and is operable to apply an adjustable voltage to the heater. The controller is in communication with the power switch to control the voltage output of the power converter based on at least one of a load current and a detected voltage at the heater. The controller operates the power switch to adjust the voltage output of the power converter.

Abstract: A switch-operated therapeutic agent delivery device. Embodiments of the operated therapeutic agent delivery device my include a switch that can be operated by a user, a device controller connected to the switch through a switch input where the device can actuate the device when certain predetermined conditions are met, following performance of both a digital switch validation test and an analog switch validation test. The switch operated therapeutic agent delivery device may have two parts, which are assembled by a user prior to use. These devices may be configured to determine if a current is present between the anode and cathode when drug is not intended to be delivered by the device. These devices may indirectly control and/or monitor the applied current without directly measuring from the cathode of the patient terminal.

Abstract: A switch-operated therapeutic agent delivery device is described. Embodiments of the operated therapeutic agent delivery device include a switch that can be operated by a user, a device controller connected to the switch through a switch input where the device can actuate the device when certain predetermined conditions are met, following performance of both a digital switch validation test and an analog switch validation test.