46 results about "Electrical integrity" patented technology

A method and related bonding compositions for use in assembling a solid oxide fuel cell (“SOFC”) stack having thermally and chemically stable and electrically conductive bonds between alternating fuel cells and interconnect components in the stack. The improved method and materials allow for the assembly of solid oxide fuel cells having a stronger and more reliable bond with good electrical contact in situ between the SOFC interconnect layers (plates) and the electrodes. The bonding materials and method according to the invention provide good electrical performance while maintaining the mechanical and electrical integrity of SOFC stacks without requiring excessive mechanical compression of the stack as exemplified by prior art systems. The preferred bonding agents comprise a primary phase that provides the electrical conduction path during fuel cell operation, as well as the mechanical strength necessary to insure a reliable connection between the interconnect and the relevant anode or cathode surfaces of the fuel cell. Secondary phases can be added in small amounts to the primary phase to improve adhesion. An exemplary method according to the invention also contemplates various different steps for pre-treating the surfaces of the interconnect plates and electrodes to improve their surface bonding properties.

A system is provided for testing the electrical integrity of an implanted pacemaker or defibrillator lead. The system includes a container holding an electrically conductive solution, such as a saline solution. A voltage source and two electrodes are provided to pass an electrical current through the solution. To use the system, the proximal end of the electrical lead is disconnected from the implanted electronic device, passed through the saline solution and then electrically connected to a device/monitor. During testing, the device/monitor sends a test pulse through the lead and monitors electrical activity in the lead. To test sequential locations along the length of the proximal segment, the segment is drawn through the saline solution and between the electrodes while test pulses are sent and monitored. The monitor detects abnormal electrical activity in the lead indicative of a break in lead insulation.

A system and method is provided for generating a programmably implemented model which emulates a power delivery network serving an integrated circuit (IC) core in an electronic system. The system and method generally comprise measures for establishing a power integrity (PI) topology including models for a voltage regulator module that generates at least one predetermined supply voltage level, and for a conductive power rail portion of the power delivery network (PDN). The system and method further comprise measures for interconnecting to the conductive power rail portion model a first behavioral model indicative of the current consumption characteristics of the IC core, and a second behavioral model indicative of the current consumption of an IO interface buffer driving an output signal of the electronic system.

An electrical connector and method of making the electrical connection are disclosed for use in particularly arduous conditions, such as down hole oil production applications. The invention provides high electrical integrity with an ability to accommodate steady and/or fluctuating mechanical forces placed via the cable into the connector. Synergy between the mechanical and electrical aspects of the design is taught in which an insulating member, fitted with annular upstands, co-operates with a mechanically soft, essentially incompressible, insulating substance (gel) to cause vibrations in the cable to be dissipated over a length of the insulated cores inside the connector rather that at a single point where it would cause the core to fracture. In addition, annular collars of the gel are provided between the insulating member and the crimped pin-core connections and between the annular upstands and insulated cores to give further cushioning. Because the core insulation sits deep inside the annular upstand of the insulating member and gel collars, this creates a good electrical interface with a long creepage distance. The method covers the creation of the gel collars, alignment of contact pins and insulated cores and assembly of the connector.

A Ge and Si hybrid material accumulation mode GAA (Gate-All-Around) CMOSFET includes a PMOS region having a first channel, an NMOS region having a second channel and a gate region. The first channel and the second channel have a racetrack-shaped cross section and are formed of p-type Ge and n-type Si, respectively; the surfaces of the first channel and the second channel are substantially surrounded by the gate region; a buried oxide layer is disposed between the PMOS region and the NMOS region and between the PMOS or NMOS region and the Si substrate to isolate them from one another. In an accumulation mode, current flows through the overall racetrack-shaped channel. The disclosed device has high carrier mobility, high device drive current, and maintains the electrical integrity of the device. Meanwhile, polysilicon gate depletion and short channel effects are prevented.

The invention discloses an intelligent power module multi-physical field coupling simulation analysis method and system, and the method comprises the steps: building an overall geometric model of an intelligent power module according to an intelligent power module circuit design schematic diagram; Performing finite element grid segmentation and discretization processing on the overall geometric model, performing analyzing to obtain parasitic parameters in a conductive path and a current-carrying element, and generating an equivalent circuit model; Establishing an electrical integrity model ofthe main circuit and the control circuit; Respectively solving the thermal field and the magnetic field, and establishing a stress-strain relationship and a failure model in the system level; Constructing a physical field coupling analysis model according to the stress-strain relationship, the failure model and the electrical integrity model; And based on the coupling analysis model, carrying outcurrent, magnetic field and heat dissipation state rule analysis. Parameter extraction, field distribution and coupling calculation of multi-physical field analysis can be carried out across differentfinite element analysis software, and multi-physical field coupling analysis under complex boundary conditions is completed.

An electrical integrity test system for boats provides circuitry for evaluating the integrity of the boat's galvanic isolator. The integrity test system includes two single reference diodes and a circuit for applying DC voltages across said reference diodes and said galvanic isolator. Another micro-controller stores the values of the voltage drops across the galvanic isolator and the voltage drops across each reference diode and subsequently determines if the voltage drop across the galvanic isolator is that to be normally expected. If it is not, then the system informs the operator that the boat's galvanic isolator is not operating properly.

The invention includes an automated inspection system, which automates the evaluation of electrical integrity to determine whether electrode catheters and/or cables are functioning properly. An exemplary embodiment of the system is to provide a system and method for automating the testing of various electrical parameters of several electrode catheters and/or cables so that its performance can be evaluated. The automated inspection system also automates, for example, catheter/cable identification, analysis to known specifications, and report printing and recording of the data analyses.

Method is provided for testing electrically heated subsea pipelines that are “electrical-ready,” that is, equipped for applying electrical power when it is needed for heating the pipeline at any time during the life of the pipeline. Time domain reflectometer apparatus in a water-tight enclosure can be deployed subsea. Electrical connections are made with the pipeline using wet-mateable connectors. Reflected signals from the segment of the pipeline being tested are transmitted to an interface at the surface, where the time domain reflectometer is controlled to send a selected pulse. Reflected signals may be interpreted by observing pulse form and time of receipt or by comparison of pulse forms received at different times during the life of a pipeline. Apparatus for electrically connecting a time domain reflectometer to an electrical-ready pipeline is provided.

The invention discloses a loop interlock diagnosis circuit and method. Loop interlock is a common method for electric vehicles to check the electrical integrity of all high-voltage components, high-voltage wires and connectors by using small electrical signals to connect all high-voltage components in series. By detecting the frequency and voltage amplitude of the loop interlock signal, the invention can accurately judge three faults of the loop interlock: open circuit, short circuit to power supply and short circuit to ground. Cooperating with the pull-down resistors of each high-voltage component node of the loop interlock, it can quickly and quickly locate which high-voltage component disconnection causes the loop interlock (HVIL, the same below) to disconnect, saving time and cost for maintenance.

A carrier substrate includes an access region placed within the interior of the substrate that facilitates backside access to an integrated circuit die without damaging electrical integrity of the carrier substrate, a ring of die connection pads placed around the access region, and an array of package connection pads positioned around the perimeter of the top surface of the carrier substrate. In one embodiment, the perimeter depth of the array of package connections pads is selected to correspond to the number of electrical traces routable between minimally spaced package connection pads. The basic carrier substrate design is used to create an integrated circuit carrier family with each particular circuit carrier configured to receive a range of integrated circuit sizes and I/O counts such that each circuit carrier overlaps in size range with at least one other circuit carrier.

The invention discloses a transformer substation grounding network frequency response test device, which comprises a power supply module, a frequency generator module, a power amplification module, a voltage and current collecting module and an intelligent control module, wherein the voltage and current collecting module, the intelligent control module, the frequency generator module and the power amplification module are sequentially connected, the power supply module provides the power supply for each module of the test device, the intelligent control module controls the frequency generator module to output sine wave voltage signals at different frequencies in different times, the corresponding sine wave voltage signals are amplified and loaded onto a grounding network to be tested by the power amplification module, and then, the voltage and the current of the grounding network to be tested are collected through the voltage and current collection module, so the impedance of the grounding network to be tested under the signal loading at the different frequencies is calculated by the intelligent control module. The device can be used for conveniently testing the electric completeness of the grounding network.

An electrical conductor repair device for restoring mechanical and electrical integrity to a compromised section of an electrical conductor. The device includes a body that serves as an electrical shunt and a mechanical support. The body includes a first end section for attachment to the conductor at a location on one side of the compromised section, and a second end section for attachment to the conductor at a location on the other side of the compromised section. The end sections are connected by an intermediate section.

The invention relates to a rapid model establishment and accurate corrosion diagnosis method for a transformer substation grounding grid, which is technically characterized by comprising the steps ofobtaining a drawing of the transformer substation grounding grid according to the electrical integrity test condition of a transformer substation; establishing a VISIO-based transformer substation grounding grid rapid model according to the drawing of the transformer substation grounding grid; and accurately diagnosing the corrosion according to the established model. According to the invention, VISIO software is used to carry out rapid and efficient modeling on the grounding grid, the model is processed by using a Tellegen's theorem, an epsilon-dimensional fault diagnosis equation set is constructed, and finally, the underdetermined equation set is solved by using a particle swarm algorithm for local optimization by using a least square method, so that the grounding grid can be accuratelyand quickly modeled, and the corrosion fault position and the corrosion fault degree of the grounding grid can be accurately positioned and judged through calculation.