Abstract: An electronic device cabinet includes a first temperature control system positioned to direct a conditioned airflow into a first electronic device storage zone of the cabinet and a second temperature control system positioned to direct a conditioned airflow into a second electronic device storage zone of the cabinet. The first temperature control system includes a first plurality of vortex tubes having a compressed air inlet and a first cooling air outlet that guides cooling air into the first device storage zone. The second temperature control system includes a second plurality of vortex tubes having a compressed air inlet and a second cooling air outlet that guides cooling air into the second device storage zone. A controller selectively delivers compressed air to respective ones of the first and second temperature control systems upon sensing a demand for cooling in corresponding ones of the first and second electronic device storage zones.

Abstract: In a method for reducing electromagnetic interference in a clocked circuit, the clock circuit includes at least a first clock signal and a second clock signal. The method detects when a first transition of the first clock signal is substantially aligned with a corresponding second transition of the second clock signal. The second clock signal is delayed by a predetermined amount of time when the first transition is substantially aligned with the second transition.

Abstract: A gasket for shielding a seam between two surfaces includes a resilient member, a first electrode, a second electrode and a conductive layer. The resilient member has a first side and an opposite second side. The first electrode is disposed on the first side of the resilient member. The second electrode is disposed on the second side of the resilient member. The conductive layer envelops at least a portion of the resilient member, the first electrode and the second electrode. The resilient member includes a material that is compressed when a first potential is applied between the first electrode and the second electrode and that is decompressed when a second potential, different from the first potential, is applied between the first electrode and the second electrode.

Abstract: A method and apparatus provides for the generation and recovery of a stable clock signal having harmonic emission suppressions using dual spread spectrum clock signals. The transmission frequencies of non-mixed, spread spectrum lower frequency clock signals may be varied and, upon receipt of these non-mixed signals, they are mixed into sum and difference signals. The sum signal thus generated is representative of the desired clock signal to be recovered. Such conditioning of the non-mixed signals need only occur within the receiver, thereby allow the channel that transmits the non-mixed lower frequency clock signals to the receiver to be lower bandwidth than would be required to carry the final, recovered, and higher frequency clock signal produced by the receiver.

Abstract: An electrical cable with enhanced magnetic fields and better controlling of impedances. The electrical cable includes a central ground core, an inner dielectric layer surrounding the central ground core, and a pair of signal conductor wires spirally wound on the inner dielectric layer. The signal conductor wires are separated from the central ground core by a thickness of the inner dielectric layer, and spaced apart from each other and parallel to each other. The cable further includes an intermediate dielectric layer disposed between the signal conductor wires and an outer dielectric layer surrounding the signal conductor wires and the intermediate dielectric layer.

Abstract: An attenuation mechanism for an electronic device is presented. The attenuation mechanism includes an outer member that has an inner member oriented axially within the outer member. The inner member has an axial twist that causes a line of sight blockage between an exterior and an interior of a housing of an electronic device when the attenuation mechanism is mounted through the housing, such that sound and electromagnetic radiation is attenuated without obstructing cooling air that is flowing through the housing.

Abstract: A method and system for controlling the electrical connection between the metallic covers and the underlying metal chassis of an electrical system by the select placement of impedances in a current control connector. The current control connector places an impedance, capable of controlling electrostatic discharge (ESD) currents, between the covers and the underlying chassis. The current control connector comprises a number of metallic and dielectric components. Each of these components is ideally chosen such that the structure and composition of each component contributes to an overall functionality of the current control connector and an ability to control the ESD current flow. The relative placement of the components of the current control connector allows the current control connector to eliminate current flow along a number of paths but control the current flow along a preferred path. Thus, the current control connector prevents damage to the internal electrical system.

Abstract: A twisted pair symmetric bus bar structure for electric power distribution includes a first conductor; a second conductor; an insulator; wherein the first conductor and the second conductor form an interwoven alternating interlocking pattern; wherein the first and second conductors are formed from a series of Z-shaped sections; wherein the insulator is H-shaped and has a series of slots for receiving the first and second conductors; and wherein the insulator is sandwiched between the first and second conductor.

Abstract: Disclosed is an electrical measurement probe including two probe blocks, each probe block having a connection face and a measurement face. Each probe block also includes a plurality of spring loaded pogo pins. Each pogo pin has a first end that extends to the connection face and a second end that protrudes from the measurement face. The two probe blocks are attached to a top plate. The top plate is attached to a face of each probe block opposite to the measurement face of the probe block.

Abstract: A printed circuit board having via arrangements for reducing crosstalk is disclosed. The printed circuit board includes a first layer and a second layer. The printed circuit board also includes a first via and a second via, both traveling from the first layer to the second layer. The first via is orthogonal to the second via in a three dimensional space. In addition, the printed circuit board may include a third via traveling from the first layer to the second layer, and the third via is orthogonal to the first and second vias in the three dimensional space.

Abstract: An electrically conductive shock mount system for electrical subassemblies is provided. The shock mount system includes a first assembly having a housing containing a hook member for a hook and loop fastener. The second assembly has a housing containing a loop member for a hook and loop fastener. A plurality of holes in the housings of the first and second assemblies allows the hook member to engage the loop member. In one embodiment, the housings are made from a conductive fabric and include a plurality of conductive columns that extend through the housings.

Abstract: Disclosed is an electrical measurement probe including two probe blocks, each probe block having a connection face and a measurement face. Each probe block also includes a plurality of spring loaded pogo pins. Each pogo pin has a first end that extends to the connection face and a second end that protrudes from the measurement face. The two probe blocks are attached to a top plate. The top plate is attached to a face of each probe block opposite to the measurement face of the probe block.

Abstract: Heat sinks for dissipating a thermal load are disclosed that include: a heat sink base capable of receiving a thermal load from a thermal source; heat-dissipating fins mounted on the heat sink base, each heat-dissipating fin enclosing a hollowed cavity inside the heat-dissipating fin; and a thermal transport within the hollowed cavity of each heat-dissipating fin, the thermal transport capable of convectively transferring the thermal load along a convective heat path within each heat-dissipating fin. Heat sinks for dissipating a thermal load may also include: a pair of electrodes inside each heat-dissipating fin electrically connected to the thermal transport for generating an electric current through the thermal transport; and a magnet mounted adjacent to the heat-dissipating fins for generating a magnetic field through the thermal transport, the magnetic field passing through the electric current and oriented to induce a force on the thermal transport along the convective heat path.

Abstract: An apparatus is for grounding one or more cables, each cable having a cable jacket surrounding an electrically conductive layer that includes an exposed portion not covered by the cable jacket. The apparatus includes an electrically conductive enclosure coupled to a ground potential and having an opening therethrough, a plurality of electrical conductors disposed across the opening to form a lattice, and an electrically conductive connection. The lattice is configured to receive the one or more cables therethrough such that the exposed portion of the electrically conductive layer of each cable makes electrical contact with at least one of the electrical conductors. The connection is electrical coupled to the lattice and the enclosure such that the electrically conductive layer of each cable received through the lattice is electrically coupled to the ground potential through the lattice, the connection, and the enclosure.

Abstract: A cooling apparatus, includes: one or more bimetallic deflectors attached to a mounting post, the mounting post configured for mating engagement with a protrusion of a heat sink, such that the one or more bimetallic deflectors are in thermal contact with the protrusion when the mounting post is engaged therewith; wherein the bimetallic deflectors are configured to deflect in response to thermal energy conducted from the protrusions so as to change a direction of airflow incident thereupon.

Abstract: A method and apparatus provides for the generation and recovery of a stable clock signal having harmonic emission suppressions using dual spread spectrum clock signals. The transmission frequencies of non-mixed, spread spectrum lower frequency clock signals may be varied and, upon receipt of these non-mixed signals, they are mixed into sum and difference signals. The sum signal thus generated is representative of the desired clock signal to be recovered. Such conditioning of the non-mixed signals need only occur within the receiver, thereby allow the channel that transmits the non-mixed lower frequency clock signals to the receiver to be lower bandwidth than would be required to carry the final, recovered, and higher frequency clock signal produced by the receiver.

Abstract: Disclosed is an apparatus for improving server electromagnetic shielding at high and low frequencies, including a metallic plate in fixed association with a surface of a server casing, the metallic plate defining a plurality of openings, and a substantially plastic shield including conductive metal fibers and defining a plurality of bosses extending from a boss surface of the plastic shield, the bosses configured to be insertable within the plurality of openings to allow the boss surface to be disposed adjacent to the metallic plate, each of the plurality of bosses defining a boss cavity that extends entirely through the plurality of bosses and the plastic shield.

Abstract: Embodiments of the present invention provide a system for testing and mounting a PCB in a device. A PCB may be placed on one or more standoffs so that a head portion of the standoff protrudes from one or more apertures of the PCB. A push-pin type standoff cap may then be placed on the protruding heads to mechanically restrain the PCB to the standoffs. Furthermore, one or more cables may be coupled with the standoff caps to provide power or test signals to one or more connector pads on the PCB. Therefore, the standoff caps provide a system for aligning, retaining, connecting, terminating, and testing printed circuit boards.

Abstract: An apparatus is provided for grounding one or more cables, each cable having a cable jacket surrounding an electrically conductive layer that includes an exposed portion not covered by the cable jacket. The apparatus comprises an electrically conductive enclosure coupled to a ground potential and having an opening therethrough, a plurality of electrical conductors disposed across the opening to form a lattice, and an electrically conductive connection. The lattice is configured to receive the one or more cables therethrough such that the exposed portion of the electrically conductive layer of each cable makes electrical contact with at least one of the electrical conductors. The connection is electrical coupled to the lattice and the enclosure such that the electrically conductive layer of each cable received through the lattice is electrically coupled to the ground potential through the lattice, the connection, and the enclosure.

Abstract: A gasket for shielding a seam between two surfaces includes a resilient member, a first electrode, a second electrode and a conductive layer. The resilient member has a first side and an opposite second side. The first electrode is disposed on the first side of the resilient member. The second electrode is disposed on the second side of the resilient member. The conductive layer envelops at least a portion of the resilient member, the first electrode and the second electrode. The resilient member includes a material that is compressed when a first potential is applied between the first electrode and the second electrode and that is decompressed when a second potential, different from the first potential, is applied between the first electrode and the second electrode.