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| Patent # | Description |
|---|---|
| US-4,841,268 |
MRI Magnet system with permanently installed power leads A magnet system, having permanently installed power leads, for providing a magnetic field. The system includes a vacuum vessel and a cryogenic containment vessel... |
| US-4,841,267 |
Deflection apparatus for cathode ray tube A deflection apparatus for cathode ray tube is provided, which comprises deflection yoke with guide grooves, deflection windings for scanning in one direction in... |
| US-4,841,266 |
Circuit breaker having an electrodynamically opening contact system A circuit breaker comprises a housing; a stationary contact mounted in the housing; an operating shaft disposed in the housing and rotatable about a first axis... |
| US-4,841,265 |
Surface acoustic wave filter A surface acoustic wave (SAW) filter has a piezoelectric substrate and a conductive transducer formed over the substrate. The transducer has first and second bus... |
| US-4,841,264 |
Ladder-type ceramic filter A ladder-type ceramic filter is formed of a plurality of series and parallel resonators arranged in series and in parallel between the input and output... |
| US-4,841,263 |
Biquad block with switched capacitors without continuous feedback loop
and with no sensitivity compared with... The biquad block or cell comprises two operational amplifiers OA1, OA2, eight capacitors C1-C8 and switches comprises switches of reference o and switches of... |
| US-4,841,262 |
Radio frequency power modification without phase shift A radio frequency power and voltage modification arrangement (13) including first and second power channels (28 and 29) both electrically connected between first... |
| US-4,841,261 |
Microwave rotary junction with external rotary energy coupling This invention is a rotatable transmission line junction with an external rotary mechanical energy coupling it finds application in microwave polarization... |
| US-4,841,260 |
Half wave plate A microwave device including a half wave plate for a microwave power combiner, attenuator or variable coupler divider having a circular waveguide portion and a... |
| US-4,841,259 |
Wave propagation structures for eliminating voltage surges and absorbing
transients A four-pole or three-pole structure adapted to propagate an electromagnetic wave, such as an electrical line or cable or electronic component, comprises a lossy... |
| US-4,841,257 |
High-speed sampling phase detector for clock and data recovery system A high-speed sample and hold phase detector for clock and data recovery systems is provided with a differentiating circuit coupled to a source of coded input... |
| US-4,841,256 |
Piezoelectric phase locked loop circuit A structural member having a piezoelectric transmitter film and a piezoelectric receiver film adhered thereto. The transmitter film produces a vibration upon... |
| US-4,841,255 |
Frequency synthesizer A first oscillator outputs a signal having a reference frequency. A first frequency divider divides the frequency of the output signal from the first oscillator.... |
| US-4,841,254 |
CMOS precision gain amplifier A precision gain circuit arrangement for amplifying analog type signals is fabricated on an integrated chip with digital devices in a CMOS process. The circuit... |
| US-4,841,253 |
Multiple spiral inductors for DC biasing of an amplifier A monolithic semiconductor having an on-chip DC biasing including a plurality of series connected spiral inductors connected between the respective biasing and... |
| US-4,841,252 |
System for compensating for offset voltages in comparators A variable input voltage is periodically introduced in first time periods to an amplifier such as a differential amplifier to obtain an output from the... |
| US-4,841,251 |
Method of generating a voltage with a triangular shape from a sawtooth
waveform An arrangement for generating a voltage waveform having a triangular shape, in which a first voltage waveform having a sawtooth shape is added to a second... |
| US-4,841,249 |
Truncated cone shaped surface resonator for nuclear magnetic resonance
tomography A surface resonator for use in nuclear magnetic resonance tomography is a single turn loop of ribbon-like electrical conductor having spaced ends facing each... |
| US-4,841,248 |
Transverse field limited localized coil for magnetic resonance imaging Magnets (12) create a main magnetic field along a z-axis through an image region. A localized coil (D) is disposed in the image region at least to receive... |
| US-4,841,247 |
Method for interpolative extension of nuclear magnetic resonance image A nuclear magnetic resonance image used for detecting the internal state of a substance is obtained through a phenomenon of nuclear magnetic resonance, which is... |
| US-4,841,246 |
Multiturn shaft position sensor having magnet movable with nonrotating
linear moving nut The present invention is a shaft position sensor for detection of the position of a multiturn shaft. The rotation of the multiturn shaft is converted into a... |
| US-4,841,245 |
Displacement sensor having multiplexed dual tank circuits Non-contacting sensor apparatus having two tank circuits from which an indication of the position of the moving part of the sensor is developed by measuring the... |
| US-4,841,244 |
Method and apparatus for on-sine monitoring of wear in machinery A detector for producing an electrical signal proportional to the concentration of ferromagnetic particulate material in a fluid stream includes a sensing coil... |
| US-4,841,243 |
Side-looking speed sensor An elongated generally cylindrical speed sensing device for sensing the speed of a toothed wheel to one side of the device, the device axis being transverse to... |
| US-4,841,242 |
Method for testing conductor networks A method of testing conductor networks on printed circuit boards and wiring modules comprising charging various points on the conductor network with one or more... |
| US-4,841,241 |
Testing device for both-sided contacting of component-equipped printed
circuit boards A lower needle adapter has lower, resilient contact needles and an upper needle adapter has upper, resilient contact needles which are provided for contacting of... |
| US-4,841,239 |
Method and measuring instrument for identifying the diffusion length of
the minority charge carriers for... Method and measuring instrument for identifying the diffusion length of minority charge carriers for non-destructive detection of flaws and impurities in... |
| US-4,841,238 |
Gauge driving system An air-core gauge comprising two coils in quadrature has a driving system with switches on a junction terminal and end terminals of the two coils, and a drive... |
| US-4,841,237 |
Current-measuring device A current-measuring device in accordance with the invention comprises an annular magnetic circuit having separate first and second magnetic circuit portions (1,... |
| US-4,841,236 |
Current ratio device A current ratio device for use in constructing a current transformer comprises a first magnetic core, a second magnetic core, a measuring winding... |
| US-4,841,235 |
MRS current sensor A current sensor (10) comprising spaced pole pieces (62, 64) and a magnetic shunt (80) bridging the pole pieces within an insulating housing assembly (12) which... |
| US-4,841,234 |
Voltage detector utilizing an optical probe of electro-optic material A voltage detector detects a voltage developing in a selected area of an object such as an integrated circuit by utilizing an electro-optic material equipped in... |
| US-4,841,233 |
Semiconductor integrated circuit adapted to carry out operation test A semiconductor integrated circuit device includes a memory cell array, a decoder circuit, a selection circuit and a plurality of input/output terminals. The... |
| US-4,841,232 |
Method and apparatus for testing three state drivers In an integrated circuit chip utilizing CMOS technology, an embedded data bus is driven by embedded three state drivers, and the bus is in turn connected to... |
| US-4,841,231 |
Test probe accessibility method and tool A method and tool for use with "bed of nails" fixturized automatic test equipment for printed circuit cards for verifying the continuity of component pins with... |
| US-4,841,230 |
Device for measuring moisture content in grains A device for measuring moisture content in grains has a base supporting plate, a movable supporting plate pivotally mounted on the base supporting plate. A first... |
| US-4,841,229 |
Method of and circuit for ohmmeter calibration The calibrator of an ohmmeter is compensated to eliminate any error as a result of the resistance of leads interconnecting terminals of the ohmmeter and a... |
| US-4,841,228 |
Apparatus for indicating the resistive characteristic of a capacitor Current passing through a capacitor being measured is combined with programmable portions of oppositely phased current, and means are provided for deriving... |
| US-4,841,227 |
Apparatus for the ratiometric measurement of a quantity of liquid in a
tank Apparatus for the ratiometric measurement of a quantity of liquid in a tank includes first and second capacitors disposed in a tank and responsive to an AC... |
| US-4,841,226 |
Capacitive extensometer with curved target surface A capacitive extensometer has an extensometer frame formed of a pair of arms connected together about a hinge axis at first remote ends, and having second ends... |
| US-4,841,225 |
Capacitive sensor for measuring a displacement A capacitive sensor for measuring a displacement comprises a slide carrying groups of emitting electrodes (1 to 32) disposed facing receiving electrodes (51 and... |
| US-4,841,224 |
Gap width probe and method A probe for determining the thickness of an interface gap between two surfaces is disclosed. The probe includes an inflatable bladder, which can be inserted into... |
| US-4,841,223 |
Method and apparatus for measuring fiber orientation anisotropy Apparatus for measuring fiber orientation anisotropy in a web of fibrous material includes a microwave generator, a waveguide through which a microwave signal is... |
| US-4,841,222 |
Switched Current source A switched current source includes at least two branches, at least one MOS current source transistor connected in common to each of the at least two branches,... |
| US-4,841,221 |
Position-sensing circuit A position-sensing circuit includes an elongated electrically-conductive element divided into two elongated segments. A conductor moves along the element,... |
| US-4,841,220 |
Dc-to-Dc converters using multi-resonant switches A generalized multi-resonant switch that combines current-mode and voltage-mode resonant switches. Application of the multi-resonant switch in zero-voltage... |
| US-4,841,219 |
Lossless overcurrent sensing circuit for voltage regulator An overcurrent sensing circuit for use with a voltage regulator, such as a linear post regulator for a power supply, utilizes a field effect transistor (FET)... |
| US-4,841,218 |
Electronic controller and a system and method for optimizing generation
of electrical power utilizing the same In a system comprising an asynchronous generator rotatable at variable speeds, and a main electrical network carrying power at a substantially constant voltage... |
| US-4,841,217 |
Pulsed generator incorporating output waveform flexibility and a pulsed
transformer A single phase, multipole alternator with inertial and/or electromagnetic energy storage is disclosed. More specifically, the present invention involves a high... |
| US-4,841,216 |
Engine start type VSCF generating system An AC exciter and a main AC generator are mounted on a common rotating shaft of an engine, and a power rectifier and a power inverter are connected in series to... |
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