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Method and apparatus of capacitor divider based offline AC-DC converter
An AC/DC power converter has, as its first stage, a capacitor divider and rectifier and, as the second stage, a switch mode power supply. This configuration may...
Hydrogen producing fuel for power generator
A hydrogen producing fuel comprises a chemical hydride and metal hydride. In one embodiment the chemical hydride evolves hydrogen spontaneously upon exposure to...
Gaseous dielectrics with low global warming potentials
A dielectric gaseous compound which exhibits the following properties: a boiling point in the range between about -20.degree. C. to about -273.degree. C.; low...
Low contamination rate flame detection arrangement
Contamination rate reduction for a flame detection or sensor arrangement using controlled but flexible flame sensor activation. A flame sensor of the subject...
Face detection and tracking in a wide field of view
Facial detection and tracking systems and methods within a wide field of view are disclosed. A facial detection and tracking system in accordance with an...
Luminaire having a two-way waveguide
A luminaire includes a waveguide having first and second opposing ends and first and second opposing sides between the first and second ends. The waveguide is...
Gas sensor housing for use in high temperature gas environments
An apparatus and method for packaging and operating a gas sensor for use in high temperature gas environments. A gas sensor can be configured, which includes a...
Method for implementing a control channel in a system of circumvention and
A multi-function system comprising a plurality of peripherals having different levels of susceptibility to environmental events, at least one event detector...
Inertial measurement unit fault detection isolation reconfiguration using
A method of implementing a fault-tolerant-avionic architecture in a vehicle includes using parity logic to monitor the functionality of at least three...
Hierarchical strategy for singularity avoidance in arrays of control
A control system for adjusting the attitude of a spacecraft comprises a set of control moment gyroscopes (CMGs) configured to allow null space maneuvering. The...
Integrated electrical power distribution system using common building
An electrical power distribution system includes a data bus, separate from the main aircraft data bus, internal to the aircraft electrical power distribution...
Modeling a sensor network design to secure a network against attack
A wireless sensor network may be designed by modeling the network as a function of at least one design parameter and/or at least one threat parameter .di-elect...
Neighbor based TDMA slot assignment
Non-overlapping time slots are allocated to a plurality of nodes in a network by a mobile agent that moves from node to node of the network. At a current node of...
Image capture device
A device and method for scanning an image of an object are disclosed. The device includes a controlled transparency film (5) and a set of light detectors (80). A...
Security system control module
A security system control module with a portable housing including a wireless receiver, control circuitry, nonvolatile memory, and a data connector. The receiver...
Fire detectors with environmental data input
Regional physical information can be entered along with automatically sensed ambient condition information into regional monitoring system. Alarm decision...
Circuit architecture for radiation resilience
A system and method for extending the operating life of a device susceptible to defects caused by total ionizing dose radiation and/or bias dependent degradation...
Fail-safe circuit for gas valves
A fail-safe circuit and fail-safe methods for controlling gas valves are provided. In one illustrative embodiment, a fail-safe circuit includes at least one...
Temperature sensor diagnostic for determining water heater health status
A method and apparatus for determining a health status of a water heating device is disclosed. The water heating device may have a controller that incorporates...
Process for producing fluoropropenes
Dehydrohalogenation processes for the preparation of fluoropropenes from corresponding halopropanes, in which the fluoropropenes have the formula ...
A process for the preparation of a fluoroolefin polymer, including the step of: contacting in a reaction zone: an initiator; CF.sub.3CF.dbd.CH.sub.2, and...
Multilayer airbag using non-woven fabric and reinforced scrim
Vehicular air bags formed from multilayer composites. The multilayer composites include a polymeric film and at least one tear resistant fabric attached to the...
Azeotrope-like compositions of 2-chloro-3,3,3-trifluoropropene
Provided are azeotropic and azeotrope-like compositions of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb)....
Drain valve assembly
An on-board oxygen generating system is provided, which includes an air supply duct, a breathing gas duct, and an oxygen generator fluidly coupled between the...
System and method for fiber based resonator coupling
A fiber optic alignment device on a crystalline substrate support is disclosed. An exemplary embodiment embodied in a resonator fiber optic gyro is fabricated by...
Load-distributing rotor insert for aircraft brakes
An aircraft brake rotor includes a circular rotor disk (10) having first and second walls (12) and a peripheral wall (14) connecting the first and second walls...
FET-based gas sensor system
A sensor system for detection of gas with a modified ion selection FET. The FET may have a gate of low conductivity material for detection of a species in a...
Turbocharger system subassemblies and associated assembly methods
A subassembly of a system including an exhaust gas turbocharger system coupled with an internal combustion engine exhaust system, includes first and second...
Operations support systems and methods with model-based torque estimates
An operations support system for an engine includes a model-based torque estimation unit configured to receive engine data associated with the engine and to...
Predicted path selection system and method for hazard coding in
selectively constrained aircraft control systems
A surveillance system detects potential hazards and alerts the pilot to them. The alerts can be modified to indicate proximity to the predicted path of the...
Controller with programmable service event display mode
Controllers and systems for displaying servicing information via a display unit are disclosed. A controller in accordance with an illustrative embodiment of the...
Methods for defining, detecting, analyzing, indexing and retrieving events
using video image processing
Methods and systems for defining, detecting, analyzing, indexing, and retrieving events using video image processing techniques are described herein. An...
Integrated infrastructure supporting multiple wireless devices
Methods and devices for operating a wireless network including redundant communication. Methods involving redundantly connected nodes are discussed including...
Mitigation of unbalanced input DC for inverter applications
Mitigating the DC content of an AC output from an inverter is important for electrical system reliability. The inverter may be powered by unbalanced DC inputs...
Dynamic DC biasing and leakage compensation
A system for adjusting a bias voltage of a flame sensing system. The system may use pulse width modulation to adjust the bias voltage. The system may have a...
Fault detection and isolation of redundant signals
A method of detecting signal faults comprises sampling at least three redundant signals; calculating a difference signal for each unique pair-wise comparison of...
Drive control assembly for controlling a motor
A drive control assembly for a motor including a variable frequency drive module for providing variable speed control for the motor, a bypass module for...
Method and architecture for reduction in vehicle wiring
Systems and methods perform power conversion and distribution. A system for power conversion and distribution, according to one embodiment comprises: a first...
Getter on die in an upper sense plate designed system
A microelectromechanical system (MEMS) hermetically sealed package device that is less labor intensive to construct and thus less expensive to manufacture. An...
Water vapor transport power generator
An improved system for generating electrical power using a fuel cell. More particularly, a system for generating hydrogen gas by reacting water vapor with a...
Filter and method of making
A filter, comprising: a housing defining an inner cavity; an inner sleeve disposed within the housing, the inner sleeve having portions in a spaced relationship...
Drive-by-wire throttle control apparatus
A drive-by-wire throttle control apparatus and method includes a variable resistance sensor. A contact arm can be mechanically connected between a thumb lever...
Temperature control system for a water heater
A system for detecting stacking and controlling temperature in a water heater. A controller with a connection to a temperature sensor and heating element in a...
Mortar blast attenuator diffuser
An orifice entry diverging multi vane conical venturi diffuser for a mortar tube that provides a surface at the discharge end of a mortar tube for measuring or...
Sensor geometry for improved package stress isolation
The sensor geometry for improved package stress isolation is disclosed. A counterbore on the backing plate improves stress isolation properties of the sensor....
Bleed valve outlet flow deflector
A bleed valve assembly for discharging bleed air into a gas turbine engine bypass plenum includes a bleed flow duct, a bleed valve, and a flow deflector. The...
Adaptive machining and weld repair process
The present invention provides an apparatus and method for an adaptive machining and weld repair process useful for repairing airfoils, particularly damage to an...
Electronic timer housing
Portable receiver and memory for remotely controlled presentations
A computer peripheral connects to a host computer such as a PC to assist in a presentation. The peripheral includes a memory and receiver combined within a...
System and method of acoustic detection and location of fire sprinkler
A system and method to detect acoustic signals from fire sprinkler heads discharging water and to locate such devices in a public building, airport, sports...