A motor driving device is equipped with a printed board, a plurality of secondary voltage elements mounted on the printed board and which are used only with a secondary voltage, a plurality of primary voltage elements disposed on a surface on a side opposite to a surface on which the plurality of secondary voltage elements are mounted on the printed board, and which are used only with a primary voltage that is higher than the secondary voltage, and first conductive materials, which extend from an upper portion of the printed board to control terminals (command signal input portion) of the primary voltage elements, for the purpose of transmitting command signals from the secondary voltage elements to the primary voltage elements.

A method and apparatus for a printed circuit board having a substrate, an electrical component disposed on the substrate and connected to an input, a wire bond connecting the electrical component to an output, and a gas-generating fuel disposed on the substrate proximate to the wire bond to account for an arc fault.

A card reader may include a main body frame; a flexible printed circuit board; and a protection board to protect a part of the flexible printed circuit board. The flexible printed circuit board may include a data signal circuit layer having a data signal circuit for transferring data, and a destruction detection circuit layer having a destruction detection circuit. The destruction detection circuit layer may overlap the data signal circuit layer. A second destruction detection circuit may be provided on the protection board. The destruction detection circuit layer is provided on one side of the data signal circuit layer. Part of the flexible printed circuit board may be covered with the protection board. The data signal circuit layer may be arranged on the main body frame side at least in the unprotected area and the destruction detection circuit layer may be arranged on an outer side of the card reader.

An electrical power conversion system for converting a high voltage from a HV electrical power supply to a low voltage is disclosed. In an embodiment, the electrical power conversion system includes at least one power converter and at least one RC network including a plurality of resistive components and a plurality of capacitive components electrically connected in series. In an embodiment, the at least one RC network is in series connection with the at least one power converter and the at least one RC network and at least one power converter are arranged to be connected across a line potential of the HV electrical power supply.

A first pattern and a second pattern are stacked with each other. In a pattern of a first circuit for high voltage, a GND is formed as a solid pattern. In a pattern of a second circuit for low voltage, a GND is formed as a solid pattern. The solid pattern of the GND of the pattern of the first circuit for high voltage and the solid pattern of the GND of the pattern of the second circuit for low voltage partially face each other, thereby improving noise-resistant performance of the circuit for high voltage.

A motor incorporating a power converter including a printed board on which a semiconductor module (an inverter IC), which converts a voltage of an external power supply into a high-frequency voltage and supplies the high-frequency voltage to a stator, is mounted, wherein a high-voltage circuit ground, which is a power ground of a high-voltage main circuit system of the inverter IC, and a low-voltage circuit ground, which is a ground of a control circuit system, which is a low-voltage circuit, of the semiconductor module, are provided on the board, and the high-voltage circuit ground and the low-voltage circuit ground are connected at one point via a resistor.

The systems and methods described herein relate to an adapter driver board for parallel operation of power modules. The systems and methods receive an electrical signal at an input interface of a high voltage adapter board. The systems and methods further deliver the electrical signals to first and second switches along corresponding first and second conductive traces. The first conductive trace extends along the high voltage adapter board and is conductively coupled to the input interface and the first switch. The second conductive trace extending along the high voltage adapter board and is conductively coupled to the input interface and the second switch. The first and second conductive traces are each configured to have an inductance substantially the same. The systems and methods synchronously activate the first and second switches based on the electrical signal.

A power module includes: a ceramic substrate that includes a principal surface and a back surface, and is provided with a plurality of metal wirings on the principal surface; a semiconductor chip mounted on any metal wiring of the plurality of metal wirings; and a resin part disposed around each of the plurality of metal wirings. Further, side faces of the metal wirings each have: a first region in which a plating film is formed; a second region that is positioned above the first region and that is a non-plating region; and a third region that is positioned between the first region and the second region and in which metal particles are formed. The resin part is bonded to the metal particles, the plating film, and the principal surface of the ceramic substrate.

A microelectronic device comprises a first substrate (110) having a first electrically conductive path (111) therein and a second substrate (120) above the first substrate and having a second electrically conductive path (121) therein, wherein the first electrically conductive path and the second electrically conductive path are electrically connected to each other and form a portion of a current loop (131) of an inductor (130).

An illustrative electronic assembly having an electrical connector therein to ground an electronic component of the electronic assembly to a grounding feature of a printed wiring assembly (PWA) of the electronic assembly. The electronic assembly may include a housing, the PWA, the electronic component and the electrical connector. The electrical connector may be a conductive and resilient extender or connector that may have a first portion connected to the PWA and a second portion extending generally away from the PWA toward the electronic component. The second portion of the electrical connector may be in mechanical and electrical contact with the electronic component.