This application provides an embedded substrate, a circuit board assembly, and an electronic device. The embedded substrate in this application includes an insulation layer, and an electronic element and a conductive connector that are embedded inside the insulation layer. The conductive connector is electrically connected to the electronic element. The conductive connector includes at least one fuse unit, the fuse unit includes a fusible structure and two electrical connection ends, the fusible structure is connected between the two electrical connection ends in a direction of an electrical path of the conductive connector, and the fusible structure is configured to be blown when a passing current exceeds a preset current threshold, to disconnect an electrical connection between the electronic element and an external connection end. In this application, maintenance and replacement costs are low during current burning prevention, and a volume is compact.

An electronic card comprising: a first card portion including lightning protection components, a first ground plane and a first ground zone; a second card portion comprising functional components, a second ground plane and a second ground zone; a third card portion, which separates and electrically isolates the first ground plane and the first ground zone from the second ground plane and from the second ground zone; the first ground zone and the second ground zone being unvarnished; the first ground zone and the second ground zone being arranged in order to be applied onto a housing element that is electrically conductive and that belongs to a housing in which the electronic card is integrated.

Embodiments of negative pressure wound therapy systems and methods are disclosed. In one embodiment, an apparatus includes a housing, negative pressure source, circuit board, and one or more controllers. The circuit board can be supported by the housing and include a conductive pathway extending around at least part of a perimeter of a first side of the circuit board. The conductive pathway can be electrically coupled to an electrical ground for the circuit board. The one or more controllers can be mounted on the circuit board and activate and deactivate the negative pressure source.

A circuit interrupter including a line conductor, a neutral conductor, a printed-circuit board coil, and a test circuit. The printed-circuit board coil has an aperture configured to receive the line conductor. The test circuit is electrically connected to the printed-circuit board coil. The test circuit is configured to determine an arc fault condition based on a signal of the printed-circuit board coil.

The disclosure relates generally to microphone and vibration sensor assemblies (100) having a transducer (102), like a microelectromechanical systems (MEMS) device, and an electrical circuit (103) disposed in a housing (110) configured for integration with a host device. The electrical circuit includes an output driver circuit, a low drop out (LDO) regulator circuit, and an over-voltage protection circuit with improved capacity and response time.

A surge protective device (SPD) circuit system for providing overvoltage protection to an electrical power circuit includes a PCB assembly, an SPD module, and an SPD monitoring system. The PCB assembly selectively mountable on the PCB includes a PCB and a remote signal (RS) PCB contact on the PCB. The SPD module includes an overvoltage clamping element and an RS spring contact including an RS contact portion. When the SPD module is mounted on the PCB and the electrical power circuit is connected to the PCB: the PCB electrically connects the SPD module to the circuit and the overvoltage clamping element provides overvoltage protection to the circuit; the RS contact portion engages the RS PCB contact; the RS spring contact is elastically deflected and persistently loads the RS contact portion against the RS PCB contact; and the RS spring contact is electrically connected to the SPD monitoring system via the RS PCB contact.

An electronic device including a flexible substrate, a plurality of light emitting units, and a plurality of supporting elements is provided. The flexible substrate has a first surface and a second surface opposite to each other. The light emitting units are disposed on the first surface. The supporting elements are disposed on the second surface. The supporting element includes an arc-shaped structure.

Embodiments of negative pressure wound therapy systems and methods are disclosed. In one embodiment, an apparatus includes a housing, negative pressure source, circuit board, and one or more controllers. The circuit board can be supported by the housing and include a conductive pathway extending around at least part of a perimeter of a first side of the circuit board. The conductive pathway can be electrically coupled to an electrical ground for the circuit board. The one or more controllers can be mounted on the circuit board and activate and deactivate the negative pressure source.

A circuit interrupter including a line conductor, a printed-circuit board, and a test circuit. The printed-circuit board coil is embedded on a printed circuit board. The printed circuit board includes a slot through the printed-circuit board coil, wherein the line conductor is received by the printed-circuit board coil. The test circuit is electrically connected to the printed-circuit board coil. The test circuit is configured to determine a condition of the line conductor based on a signal of the printed-circuit board coil.

An electronic component assembly is described which comprises a stack of electronic components wherein each electronic component comprises a face and external terminations. A component stability structure is attached to at least one face. A circuit board is provided wherein the circuit board comprises circuit traces arranged for electrical engagement with the external terminations. The component stability structure mechanically engages with the circuit board and inhibits the electronic device from moving relative to the circuit board.