The invention relates to an emission tip assembly (100) on high-voltage electrodes for charging or discharging substrates, comprising at least one emission tip (1) and a carrier body (7) comprised of an insulating material, which has at least one high-resistance series resistor (13), wherein the at least one emission tip (1) can be connected to a high-voltage connection (14) by means of the series resistor (13). In order to have available an assembly of emission tips which, despite protrusion from the carrier body (7) thereof to an extent in principle and despite the metal profiled element (10, 10a) provided with the insulating potting mass (6), causes no injuries in the event of unintentional and intentional contact and thus permits safe handling together with high efficiency of the assembly, the emission tip (1) is formed of a spring metal and forms an elastic spring element, and a free end of the emission tip (1) is freely spaced apart from the carrier body (7), the particular metal profiled element (10, 10a) and the insulating potting mass (6), as a corona tip (2). In addition the range effect of a discharge electrode is improved by the guiding of an auxiliary air quantity (15) directly to the corona tip (2).

A printed circuit board and an electronic apparatus having the printed circuit board are provided. The printed circuit board includes a circuit board body and an electronic element disposed on the circuit board body, the circuit board body is provided with a conductive hole, the circuit board body is grounded by a conductor provided in the conductive hole, and at least one through hole is disposed between the conductive hole and at least part of the electronic element.

A printed circuit board and an electronic apparatus having the printed circuit board are provided. The printed circuit board includes a circuit board body and an electronic element disposed on the circuit board body, the circuit board body is provided with a conductive hole, the circuit board body is grounded by a conductor provided in the conductive hole, and at least one through hole is disposed between the conductive hole and at least part of the electronic element.

A fracturing well site system includes an electric-driven apparatus, a fuel-driven apparatus, an electric-power supply apparatus and a grounding system. The grounding system includes a first grounding terminal which is spaced from each of the electric-driven apparatus, the fuel-driven apparatus and the electric-power supply apparatus by a preset distance. The fuel-driven apparatus and at least one of the electric-driven apparatus and the electric-power supply apparatus are connected to the first grounding terminal, and the first grounding terminal is configured to ground the fuel-driven apparatus and the at least one of the electric-driven apparatus and the electric-power supply apparatus.

A fracturing well site system includes an electric-driven apparatus, a fuel-driven apparatus, an electric-power supply apparatus and a grounding system. The grounding system includes a first grounding terminal which is spaced from each of the electric-driven apparatus, the fuel-driven apparatus and the electric-power supply apparatus by a preset distance. The fuel-driven apparatus and at least one of the electric-driven apparatus and the electric-power supply apparatus are connected to the first grounding terminal, and the first grounding terminal is configured to ground the fuel-driven apparatus and the at least one of the electric-driven apparatus and the electric-power supply apparatus.

An electronic device may have a display and other electrical components that are sensitive to electrostatic charge. A button may pass through an opening in a layer of the display. A metal trim may surround the button. The housing may have an opening with a clear lens surrounded by a metal trim. To prevent damage from electrostatic discharge, an electrostatic discharge path may be formed in the device that includes a metal trim surrounding a component such as a button member or camera lens, metal traces on the inner surface of a display layer or a housing, a grounded metal housing structure, and a spring or other conductive structure that couples the metal traces to the grounded metal housing structure. Displays may be provided with electrostatic discharge paths that route electrostatic charge to grounded metal housing structures.

The disclosure relates to a backlight module and a display device. The backlight module includes: a conductive adhesive tape configured for adhering the backlight module to a display panel to transfer electrostatic charges in the display panel to the backlight module; and a first wire configured to lead the electrostatic charges out from the backlight module, the electrostatic charges led out from the backlight module at least including the electrostatic charges transferred from the display panel to the backlight module, electrostatic charges generated in the backlight module, or a combination thereof. Electrostatic charges in the display panel are led into the backlight module through the conductive adhesive tape, and are led out via the first wire of the backlight module, so that no wire needs to be provided in the display panel for leading out the electrostatic charges, that is, it is not necessary to adjust wirings in the display panel.

The disclosure relates to a backlight module and a display device. The backlight module includes: a conductive adhesive tape configured for adhering the backlight module to a display panel to transfer electrostatic charges in the display panel to the backlight module; and a first wire configured to lead the electrostatic charges out from the backlight module, the electrostatic charges led out from the backlight module at least including the electrostatic charges transferred from the display panel to the backlight module, electrostatic charges generated in the backlight module, or a combination thereof. Electrostatic charges in the display panel are led into the backlight module through the conductive adhesive tape, and are led out via the first wire of the backlight module, so that no wire needs to be provided in the display panel for leading out the electrostatic charges, that is, it is not necessary to adjust wirings in the display panel.

A fastener system for ignition prevention triggered by a lightning strike. The fastener has a fastener body and a fastener head, and a fastening member configured to be mounted on a portion of the fastener body, wherein the fastener and the fastening member are configured to fasten at least a first part and a second part between the fastener head and the fastening member, and the fastener comprises an electrically insulating material. A structure comprises the fastener system, the first part that faces an outside from where the lightning strike may hit the first part and the second part.

A fastener system for ignition prevention triggered by a lightning strike. The fastener has a fastener body and a fastener head, and a fastening member configured to be mounted on a portion of the fastener body, wherein the fastener and the fastening member are configured to fasten at least a first part and a second part between the fastener head and the fastening member, and the fastener comprises an electrically insulating material. A structure comprises the fastener system, the first part that faces an outside from where the lightning strike may hit the first part and the second part.