A receptacle for receiving a plug connector of a high-voltage cable for a microfocus X-ray tube with a cathode, which has a metal filament and grid. The receptacle has a ceramic insulator with three contiguous cavities. The first cavity near the filament includes electrical contacts for the filament and the grid. The second cavity includes spring contacts for supplying current to the filament and a center pin for supplying voltage to the grid. The third cavity receives the plug connector. The insulator has a removable grid cap which is conductively connected to the grid of the cathode. The first and second cavities are surrounded in the radial direction by the grid cap, An air gap extends radially between grid cap and ceramic body. At the end of the grid cap remote from the filament is a circumferential groove in the axial direction between the grid cap and the ceramic insulator.

The present invention allows a connector other than an adapter to have a pin and an insulator, and thus the connector functions as a filter. A module using the connector of the present invention has a small size so as to be economically and widely applicable. The pin is formed to have a multistage structure of at least two stages having different heights to provide a proper filter function.

Assemblies, apparatus, devices and methods useful in providing lightning protection of avionic components associated with aircraft antennas are disclosed. Aspects of the present disclosure may be used on aircraft comprising structural elements made from composite materials having a relatively low electrical conductivity. An exemplary assembly disclosed comprises: an antenna secured to a structural element of the aircraft and configured to receive wireless signals and/or transmit wireless signals external to the aircraft; a communication unit operatively connected to the antenna for signal transmission between the antenna and the communication unit; and an isolation transformer electrically disposed between the antenna and the communication unit where signal transmission between the antenna and the communication unit is conducted via the isolation transformer.

A surge protection device includes, in one embodiment, a surge responder operative to engage an inner conductor engager during a protection mode and disengage the inner conductor engager during a normal mode. The surge responder returns to the normal mode from the protection mode without operating intervention to replace or re-engage the surge responder.

A surge protection device includes, in one embodiment, a surge responder operative to engage an inner conductor engager during a protection mode and disengage the inner conductor engager during a normal mode. The surge responder returns to the normal mode from the protection mode without operating intervention to replace or re-engage the surge responder.

Coaxial connectors with a grounding tube for altering a ground path with a conductor of the coaxial connector are disclosed. The coaxial connector comprises a grounding tube mounted within the connector housing and around at least a portion of a first conductor to initially establish and subsequently disconnect a grounding path between the first conductor and a housing of the coaxial connector. After contacting the mating connector, the first conductor moves, along with a first conductor housing, which moves a plurality of fingers of the grounding tube from the closed position to the open position. This disconnects the grounding path between the first conductor and the connector housing and establishes an electrical path between the first conductor and the mating connector. Thus, the coaxial connector is grounded before establishing an electrical connection between the coaxial connector and a mating connector.

A connector assembly with overvoltage protection includes: a housing having a cavity therein; a printed circuit board residing in the cavity of the housing; an overvoltage unit mounted on the printed circuit board and configured to create an open electrical circuit when experiencing a voltage higher than a predetermined threshold; a plurality of first electrical contacts adjacent a first edge of the printed circuit board and electrically connected to the overvoltage unit, each of the plurality of first electrical contacts configured to receive a respective one of a plurality of electrical conductors of a hybrid jumper cable; a plurality of second electrical contacts adjacent a second edge of the printed circuit board and electrically connected to the overvoltage unit, each of the plurality of second electrical contacts configured to receive a respective one of a plurality of electrical conductors of a piece of communications equipment; and a plurality of optical connectors mounted within the cavity configured to receive optical fibers of the hybrid jumper cable and the piece of communications equipment.

A connector assembly with overvoltage protection includes: a housing having a cavity therein; a printed circuit board residing in the cavity of the housing; an overvoltage unit mounted on the printed circuit board and configured to create an open electrical circuit when experiencing a voltage higher than a predetermined threshold; a plurality of first electrical contacts adjacent a first edge of the printed circuit board and electrically connected to the overvoltage unit, each of the plurality of first electrical contacts configured to receive a respective one of a plurality of electrical conductors of a hybrid jumper cable; a plurality of second electrical contacts adjacent a second edge of the printed circuit board and electrically connected to the overvoltage unit, each of the plurality of second electrical contacts configured to receive a respective one of a plurality of electrical conductors of a piece of communications equipment; and a plurality of optical connectors mounted within the cavity configured to receive optical fibers of the hybrid jumper cable and the piece of communications equipment.

A tunable three-dimensional (3D) inductor comprises a plurality of vias arranged with spacing among them, a plurality of interconnects in a metal layer, wherein the plurality of interconnects connect the plurality of vias on one end, and a plurality of tunable wires that connects to the plurality of vias on the other end to form the 3D inductor. The physical configuration and inductance value of the 3D inductor are adjustable by tuning the plurality of tunable wires during manufacturing process.

A tunable three-dimensional (3D) inductor comprises a plurality of vias arranged with spacing among them, a plurality of interconnects in a metal layer, wherein the plurality of interconnects connect the plurality of vias on one end, and a plurality of tunable wires that connects to the plurality of vias on the other end to form the 3D inductor. The physical configuration and inductance value of the 3D inductor are adjustable by tuning the plurality of tunable wires during manufacturing process.