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Fire detection system and method using multiple sensors
Outputs from a plurality of different ambient condition sensors are cross correlated so as to adjust a threshold value for a different, primary, sensor....
Radiation hardened phase locked loop
A method and apparatus for providing a radiation hardened Phase Locked Loop (PLL) are presented. The radiation hardened PLL includes an adjustable bandwidth loop...
Timing control circuit for lossless switching converter
A timing control circuit (70) generates staggered signals from a pulse width modulated signal (68) providing lossless switching in a DC to DC power converter...
Hybrid gas turbine engine starter-generator
A rotating electrical machine, such as an aircraft starter-generator, that may be operated in either a DC motor mode or an AC generator mode. The machine...
Solid-free-form fabrication process and apparatus including in-process
A solid free form fabrication system for manufacturing a component by successively building feedstock layers representing successive cross-sectional component...
Fast-pivot missile flight control surface
Methods and apparatus are provided for a missile that includes a housing, a fin, and a first actuator. The housing has a slot formed therethrough. The fin is...
Butterfly valve with integral split flapper relief valve
A valve is provided that includes a valve housing, a valve element, and a flapper. The valve housing has a passage. The valve element is rotationally mounted in...
Small angle high frequency angular displacement measurement system
A system to determine unwanted noise produced by simulation equipment. In one embodiment, an angular rotation noise measuring system comprises a stable body, a...
Cargo smoke detector and related method for reducing false detects
A method for reducing false detects may include emitting an infrared light beam from a primary emitter to a primary monitor detector, measuring a first voltage...
Dual technology glass breakage detector
A dual technology glass breakage detector for a security system that detects the breaking of glass in a window or door without generating false alarms caused by...
Lock detect circuit for a phase locked loop
An improved system and method for determining the lock condition of a Phase Locked Loop (PLL) is described. The lock detect circuit generates a fast lock detect...
Delay locked loop with selectable delay
A DLL includes a control module coupled with a phase detect signal. The phase detect signal is used by a control module to generate feedback and output select...
Oxidation barrier coatings for silicon based ceramics
A protective barrier coating system including a diffusion barrier coating and an oxidation barrier coating and method for use in protecting silicon-based ceramic...
Two-piece housing reconfigurable with an integral hinge
An electrical unit has first and second attached housing sections. The sections are movable relative to one another and include internal conduits and conductors...
Heat exchanger with modified tube surface feature
A heat exchanger includes a shell that has an inner chamber defined by an inside wall surface. A tube stack disposed within the inner chamber and includes a...
High accuracy low leakage valve for high pressure applications
A high pressure valve assembly (10) comprising a valve sleeve (14) and a valve body (16) slidably mounted in the valve sleeve (14) is disclosed, the valve body...
Acoustic wave etch rate sensor system
An acoustic wave sensor system for monitoring the etch rate or etch ability of a selective material has an acoustic wave sensing device having a piezoelectric...
Simulating a dose rate event in a circuit design
Behaviors of a transistor during a dose rate event can be modeled using a circuit simulation software package. A subcircuit model replaces a transistor in a...
Combined trimming and skiving of stock
Cutting and skiving patterns to be used in the production of product rolls from a master roll are selected so as to optimize trim efficiency. The product rolls...
Synchronizing RF system
A synchronizing method and system between a Radio Frequency (RF) transmitter and a battery powered receiver wherein the transmitter transmits short duration...
DC-DC converter having synchronous rectification without cross conduction
An apparatus (54) is provided for preventing cross conduction in a synchronous rectifier of a DC-DC converter (10). The DC-DC converter has an input MOSFET...
Sensor and methods for measuring select components in sheetmaking systems
A sensor for measuring at least selected component in a composition can include: (a) a broadband light source, (b) an acousto-optic tunable filter (AOTF), (c)...
Wireless children's safety light in a security system
A safety light is activated by a wireless signal from a control panel in a home security system is response to detection of a fire by the system. The safety...
MEM's reed switch array
A MEM's reed switch array is provided having a first switch having a sensitivity causing the first switch to open or close due to a magnetic flux, and a second...
Ping-pong auto-zero amplifier with glitch reduction
A ping-pong amplifier with reduced glitching is described. The ping-pong amplifier includes a nulling amplifier coupled to a switching network. The switching...
Optical particulate sensor in oil quality detection
An oil quality sensor apparatus includes a housing that includes an oil flow path through which oil flows through the housing. One or more photo-detectors can be...
Deformable electrical connector
A secure electrical connector for wire conductors. An electrical connector can be pressed into place in the base of a toggle switch and includes an electrically...
Dynamic fluid delivery system with compensation
Flow is managed within a fluid delivery system. One illustrative fluid delivery system is a zoned HVAC system. In one illustrative embodiment, a method is...
Microvalve package assembly
A microvalve assembly that can help protect a microvalve or an assembly of microvalves from the environment. Such a microvalve assembly may be mechanically...
Multiple language user interface for thermal comfort controller
A multiple language user interface system for a thermal comfort controller. The user interface system has a central processing unit coupled to a memory, a...
Reconfigurable computing architecture for space applications
A reconfigurable computer includes a reconfigurable processing element configured to process raw payload data in accordance with a configuration that is applied...
Air purged optical densitometer
An advanced gas purged optical densitometer that significantly decreases the likelihood of optical component contamination and unstable optical path reduction...
Glassbreak alarm recorder for false alarm verification
A glass breakage detector (100) having an acoustic transducer (102) for sensing first acoustic waves (130) and for providing a first analog signal (110)...
Solid state reference electrode
A reference electrode includes a conductive substrate having a first surface and an ionically insulating, hydrophobic layer adjacent to the first surface having...
Preload system for bearings in a waterjet propulsion apparatus
A preload system for bearings in a waterjet propulsion apparatus, the apparatus including a water intake section and a pumping unit including a bearing...
Method and apparatus for forming fiber reinforced composite parts
A method and apparatus for combining raw fibrous and binding materials in a single mixing step (Step S3), followed by consolidation (Step S5) so as to greatly...
Noise suppression structure and method of making the same
An integrated noise suppression acoustic panel includes a back plate, a face plate, and a bulk foam absorber disposed between the back plate and the face plate....
A pressure sensor is constructed of a plastic package. The plastic package incorporates in the same material a sensing diaphragm including tensile and...
Aircraft brake actuation system and method including anti-hysteresis
An aircraft brake actuation system implements an anti-hysteresis feature that compensates for various hysteresis effects exhibited in an aircraft brake actuation...
Managing field devices having different device description specifications
in a process control system
According to an aspect of the present invention, device descriptions specified using different device description (DD) specifications are converted (represented)...
Systems and methods for reducing harmonic interference effects in analog
to digital conversion
Systems and methods are described for increasing the effective dynamic range of a digital data stream in a software-defined radio receiver. In one system the...
System and method for recovering lost data in a gyroscope sensor system
A system and method for recovering lost data in an electronic gyroscope sensor system are disclosed, which use a linear adaptive predictive technique for...
Method and apparatus for power management
A system in accordance with the invention includes a power converter for converting a thermally generated voltage where the power converter includes a...
Flexible active matrix display backplane and method
An active matrix display backplane is formed by annealing a flexible dielectric substrate, and then forming one or more thin-film-transistors (TFTs), one or more...
Modified MCrAlY coatings on turbine blade tips with improved durability
There is provided a method for depositing a modified MCrAlY coating on a turbine blade tip. The method utilizes laser deposition techniques to provide a...
Filter apparatus for removing sulfur-containing compounds from liquid
fuels, and methods of using same
A fuel filter for removing fuel impurities, particularly thiophenes, includes a hollow housing having a filter element therein. The filter element includes a...
Staged oil filter incorporating pelletized basic conditioner
An improved oil conditioning filter, for use with an internal combustion engine, includes a mechanically active filter element and a chemically active filter...
Solder extraction tool and method
Methods and apparatus are provided for removing plating from a device. The method and apparatus may be used for preparing an electrical connector for connecting...
Spectra generator for test and calibration
A spectra generator having an electrically programmable diffraction grating. There may be a broad band light source that emits light which is diffracted by the...
Chip packaging systems and methods
An automated process for performing MEMS packaging including automatically attaching a die to a chip carrier, resulting in a chip carrier assembly, automatically...