Abstract: An electromagnetic interference (EMI) shield that increases the airflow through the EMI shield while preventing line-of-sight openings through the EMI shield. Two plates are coupled together. Each of the respective plates has a raised component with an aperture therethrough to provide a path through the plate. The raised component is preferably scoop-shaped with the aperture at one end and an opposite end tapering into the respective plate. At least a portion of one of the raised components overlaps at least a portion of the other of the raised components when the plates are coupled together to form a path through the plates, while the plates are coupled together. Line-of-sight openings through the plates, to an electronic device protected by the EMI shield, are at least partially prevented by the raised components.

Abstract: An electronic device is within a housing that has an aperture through an enclosure surface of the housing. A ferrite block is attached to an edge of the aperture, thus transforming electromagnetically-induced current next to the aperture into heat in order to reduce a voltage across the aperture, thereby suppressing aperture edge emissions.

Abstract: A heatsink may include an area in thermal contact with a semiconductor microchip surface and a first trench of a first depth. The first trench may be substantially continuous around the area. A first substance, such as ferrite, may be positioned in the first trench to attenuate electromagnetic interference. A second trench having a second depth may be formed around and further from the area than the first trench. A second substance may be positioned in the second trench.

Abstract: An Uninterruptible Power Supply (UPS) for providing power to a computer system. The UPS converts kinetic energy of cooling fluid already being pumped through the computer system to operate a reaction turbine. The turbine drives a flywheel, which in turn can drive a generator in the case of a power failure. A gravity feed may continue to supply cooling fluid to the system, at least for a time, after the power is lost. The turbine can continue to store this energy in the flywheel after power failure thereby extending the ride-through time available.

Abstract: A method and dual watchdog communication circuit for implementing single line asynchronous dual watchdog communication for electrostatic discharge (ESD) immunity, and a design structure on which the subject circuit resides are provided. The dual watchdog communication circuit includes a source transceiver module and a sink transceiver module connected together by a single line, each of the source transceiver module and the sink transceiver module uses a coded pulse for the single line asynchronous dual watchdog communication.

Abstract: A mechanism for protecting objects sensitive to electrostatic discharge (ESD) employs nested plates to direct the flow of ESD current to a targeted impedance. In one embodiment, an insulator plate is interposed between first and second electrically conductive plates. The insulator plate prevents any charge accumulating on the first plate from arcing to the second plate through the insulator plate. A target plate of electrically conductive material is interposed between the first and second plates over a hole in the insulator plate. The target plate, which is surrounded by an impedance layer of static dissipative material, includes a discharge portion that projects toward the second plate. ESD current flows in a path from the first plate, through the impedance layer, the target plate and again through the impedance layer, and to the second plate. The impedance layer provides a targeted impedance in the ESD current path.

Abstract: A method, system, and structure are provided for implementing a flex circuit cable and connector with a dual shielded air plenum. A flex circuit cable is provided with a connector. The flex circuit cable includes a stack of three spaced flex cable members with a plurality of gasket separators that are configured to form a pair of air plenums between the inner flex cable member and the respective outer flex cable members carrying cooling air coupled to the connector. The respective outer flex cable members together with the gasket separators provide a shielding function.

Abstract: A method and structure are provided for implementing surface mount components with symmetric reference balance. A first reference and an incoming signal are received in a surface mounted device (SMD) package and a second reference and the outgoing signal are output from the SMD package. A capacitor structure is defined within the SMD package between the first reference and the second reference. The capacitor structure includes a balanced impedance structure between the first reference and the second reference. A component connected between the received incoming signal and output signal is generally centrally located within the capacitor structure.

Abstract: A method and structures are provided for implementing a latching gasket including an electrically conductive fabric, and a latching clip. The latching clip includes a support member carrying the electrically conductive fabric for radio frequency (RF) connection engagement with a first wall surface. The latching clip includes a first channel-defining member and a second channel-defining member extending downwardly from the support member. The first channel-defining member carries the electrically conductive fabric for radio frequency (RF) connection engagement with a second wall surface received in a channel defined by the first and second channel-defining members. The latching clip includes a latch arm extending outwardly and downwardly from an end of the support member near the second channel-defining member.

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: A radial optical data interchange packaging comprises a central core; a plurality of central core photo transceivers emerging from an exterior side surface of the central core; a mother board coupled to the central core, wherein the mother board is perpendicularly oriented below and abutting the central core; a plurality of retention slots on the mother board, wherein the retention slots radially extend away from the central core; and a plurality of cards held by the retention slots, wherein each of the plurality of cards comprises a set of card photo transceivers that optically communicate with the central core photo transceivers.

Abstract: An adapter couples a module to a circuit board. The adapter comprises a decoupling capacitor, which has a first capacitor plate and a second capacitor plate separated by an insulating dielectric, located within the adapter. A voltage pin and a ground pin within the adapter traverse through the decoupling capacitor in order to make voltage and ground connections between the module and the circuit board. A first fusible ring, which is adjacent to the first capacitor plate, encircles the voltage pin, and a second fusible ring, which is adjacent to the second capacitor plate, encircles the ground pin. When the first and second fusible rings are fused to their respective capacitor plates, the decoupling capacitor provides the module with decoupling capacitance protection from stray alternating current voltage, and also provides the module with power/ground sources to compensate for current/ground spikes.

Abstract: An electronic device is within a housing that has an aperture through an enclosure surface of the housing. A ferrite block is attached to an edge of the aperture, thus transforming electromagnetically-induced current next to the aperture into heat in order to reduce a voltage across the aperture, thereby suppressing aperture edge emissions.

Abstract: A method and circuit for implementing a coded time domain transmission distance meter, and a design structure on which the subject circuit resides are provided. A first transmitter module connected to a cable at a first point or power outlet, generates and sends a testing coded pulse onto the power cable. A second receiver module connected to the cable at a second point, receives the testing coded pulse, and returns a receiver response coded pulse to the transmitter module. The first transmitter module determines the round-trip elapsed time, subtracts a receiver latency time, and calculates a distance to the second receiver module. Encoded in the testing coded pulse are data representing the last calculated distance. Both the first transmitter module and the second receiver module include a display for displaying the calculated distance.

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: An 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: A modular line filter connector is provided for implementing adaptable three-phase power filtering. A plurality of selected modular components defines the modular line filter connector. The modular line filter connector includes a pair of outer cylinders providing power filtering connections including, for example, line-to-line connections, line-to-common connections, common-to-protective earth connections, and line-to-protective earth connections. The selected modular components are mounted between the pair of outer cylinders and disposed along the length of the modular line filter connector. Different modular components are selected to adapt the modular line filter connector for different filtering applications.

Abstract: A modular line filter connector is provided for implementing adaptable three-phase power filtering. A plurality of selected modular components defines the modular line filter connector. The modular line filter connector includes a pair of outer cylinders providing power filtering connections including, for example, line-to-line connections, line-to-common connections, common-to-protective earth connections, and line-to-protective earth connections. The selected modular components are mounted between the pair of outer cylinders and disposed along the length of the modular line filter connector. Different modular components are selected to adapt the modular line filter connector for different filtering applications.

Abstract: A method and dual watchdog communication circuit for implementing single line asynchronous dual watchdog communication for electrostatic discharge (ESD) immunity, and a design structure on which the subject circuit resides are provided. The dual watchdog communication circuit includes a source transceiver module and a sink transceiver module connected together by a single line, each of the source transceiver module and the sink transceiver module uses a coded pulse for the single line asynchronous dual watchdog communication.

Abstract: A method and circuit for implementing a coded time domain transmission distance meter, and a design structure on which the subject circuit resides are provided. A first transmitter module connected to a cable at a first point or power outlet, generates and sends a testing coded pulse onto the power cable. A second receiver module connected to the cable at a second point, receives the testing coded pulse, and returns a receiver response coded pulse to the transmitter module. The first transmitter module determines the round-trip elapsed time, subtracts a receiver latency time, and calculates a distance to the second receiver module. Encoded in the testing coded pulse are data representing the last calculated distance. Both the first transmitter module and the second receiver module include a display for displaying the calculated distance.