Searching:
Search by keyword, patent number, inventor, assignee, city or state:
| Patent # | Description |
|---|---|
| US-5,689,169 |
Transient inductance identifier for motor control A method and apparatus used with a motor controller for determining transient inductance and rotor resistance upon commissioning of the motor. The estimator... |
| US-5,689,168 |
Control circuit for two speed motors A control circuit for a two speed electric motor includes high and low speed electronic switches. The high speed electronic switch is biased off when the low... |
| US-5,689,167 |
Two-phase electronic control of a three-phase induction motor A circuit for powering a three-phase AC induction motor. The circuit generates a first signal of the form Vdc+A sin (2.pi.ft-0.degree.) and a second signal of... |
| US-5,689,166 |
Method and apparatus for controlling hybrid excitation type permanent
magnet synchronous motor To extend an operable range of a hybrid excitation type permanent magnet synchronous motor having a field of a permanent magnet and a dc excitation coil,... |
| US-5,689,165 |
Estimator initialization circuit and method for a sensorless switched
reluctance machine system An estimator initialization circuit for a sensorless switched reluctance machine system pulses phase windings of the machine a certain number of times and... |
| US-5,689,164 |
Resonant power electronic control of switched reluctance motor An inductor-capacitor series resonant circuit is connected in series with a thyristor or other unidirectionally conductive semiconductor switch to form a... |
| US-5,689,163 |
Motor controller A motor controller of the present invention has a frequency generator which outputs, in accordance with a rotation of the motor, a predetermined number of... |
| US-5,689,162 |
Apparatus and method for current sensing for motor driver in pwm mode A motor drive control circuit for operation in the PWM mode includes a feedack circuit from a resistor for sensing motor coil current modified to switchably... |
| US-5,689,161 |
Motion controller with remote linking Multiple motion controllers for controlling servo motors are connected by a digital communications link so that controlled axes of the motion controllers may be... |
| US-5,689,160 |
Vehicle window lift control A drive control device for an opening/closing member may be advantageously utilized in vehicular power window systems and the like. The drive control device is... |
| US-5,689,159 |
Surgical tool system with brushless, sensorless motor A powered medical instrument includes a manually operable foot switch coupled to a motor control unit which in turn is coupled to an autoclavable handpiece... |
| US-5,689,158 |
Multi-mode, hybrid-type CRT and electron gun therefor with selectable
different sized grid apertures A color cathode ray tube (CRT) includes a multi-beam electron gun capable of operating in two or more modes for use as either a television receiver display or as... |
| US-5,689,157 |
Cathode-ray tube display unit in which unwanted radiant electric field
from face plate of cathode-ray tube is... A cathode-ray tube display unit provided with a high voltage transformer for supplying high voltage to an anode of a cathode-ray tube, a deflection yoke having a... |
| US-5,689,156 |
Circuit arrangement for detecting the amount of deposited electrode
material on the wall of a lamp vessel The invention relates to a measuring circuit for detecting the amount of deposited electrode material on the wall of a lamp vessel of a discharge lamp by... |
| US-5,689,155 |
Electronic stabilizer having a variable frequency soft start circuit An electronic stabilizer having a variable frequency soft start circuit, said circuit having a secondary coil coupled to a drive transformer of the electronic... |
| US-5,689,154 |
Metal halide gas discharge lamp for projection purposes A metal halide gas discharge lamp for projection purposes includes a discge vessel closed at both ends preferably has between the electrodes a central frosted... |
| US-5,689,153 |
Electro-optical plasma display device with electrode having insulating
layers A picture display device for driving a layer of an electro-optical material by exploiting a plasma for selecting a picture. The device includes a first substrate... |
| US-5,689,152 |
Electron multiplier for a multi-channel photomultiplier tube An electron multiplier of the perforated sheet type includes two successive sheets constituting a dynode which has several multiplier channels in common. For... |
| US-5,689,151 |
Anode plate for flat panel display having integrated getter An anode plate (10) for use in a field emission flat panel display device (8) comprises a transparent substrate (26) having a plurality of spaced-apart,... |
| US-5,689,150 |
Color picture tube having improved shadow mask frame An improved color picture tube includes an evacuated envelope having a rectangular faceplate panel. The panel includes a viewing screen on an inner surface... |
| US-5,689,149 |
Color picture tube having shadow mask with improved aperture shapes An improved color picture tube includes a shadow mask and a dot screen, wherein the mask has two long sides and two short sides. The long sides of the mask... |
| US-5,689,148 |
Multi-pole, two-speed brush holder assembly A multi-pole, multi-speed brush holder assembly is created by joining a first speed brush holder assembly and a second speed brush holder assembly together,... |
| US-5,689,147 |
Brushless motor A brushless motor comprising a stator core having a plurality of tooth portions disposed peripherally at intervals, coils wound in a required manner on a... |
| US-5,689,146 |
Conical bearing system for spindle motors A conical bearing system includes a first conical bearing having an integral shaft and a second conical bearing defining a bore having a shaft mating bore... |
| US-5,689,145 |
Stator structure that removes metal particles from the stator structure An object of the present invention is to provide a novel stator structure in an electrical rotating machine which has a stator to one end of which an end plate... |
| US-5,689,144 |
Four-terminal power MOSFET switch having reduced threshold voltage and
on-resistance The threshold voltage and on-resistance of a four-terminal power MOSFET switch are reduced by partially forward-biasing (to, for example, 0.5 V) the junction... |
| US-5,689,143 |
Arrangement of resistors for switching of capacitive loads in an
electromagnetic switching device The arrangement of resistors is intended for the switching of capacitive loads in an eletromagnetic switching device with main contacts (3) and auxiliary... |
| US-5,689,142 |
Keyless motor vehicle starting system with anti-theft feature A keyless motor vehicle starting system to replace a conventional ignition lock and ignition key of a motor vehicle. The system consists of a portable wireless... |
| US-5,689,141 |
Compressor drive system for a natural gas liquefaction plant having an
electric motor generator to feed excess... In a compressor drive system for a natural gas liquefaction plant including a plurality of gas turbines each provided in an individual refrigeration cycle for... |
| US-5,689,140 |
Method for forming studs and interconnects in a multi-layered
semiconductor device A method of manufacturing a semiconductor device having a stud and interconnect in a dual damascene structure uses selective deposition. The method includes... |
| US-5,689,139 |
Enhanced electromigration lifetime of metal interconnection lines The electromigration lifetime of a metal interconnection line is increased by adjusting the length of the interconnection line or providing longitudinally spaced... |
| US-5,689,138 |
Integrated microwave semiconductor device with active and passive
components A semiconductor device for microwave frequencies with a substrate which is provided at a first side with a semiconductor element, a passive element, and a... |
| US-5,689,137 |
Method for transfer molding standard electronic packages and apparatus
formed thereby A method for transfer molding a standard electronic package and an apparatus resulting from such method. A seal is formed between a portion of the mold platens... |
| US-5,689,136 |
Semiconductor device and fabrication method A thin-film semiconductor device comprising at least a semiconductor element and a wiring is disclosed. A thin film of a protective insulating material is formed... |
| US-5,689,135 |
Multi-chip device and method of fabrication employing leads over and
under processes A device and method for increasing integrated circuit density comprising a pair of superimposed dies with a plurality of leads extending between the dies. The... |
| US-5,689,134 |
Integrated circuit structure having reduced cross-talk and method of
making same An integrated circuit structure is described having a non-metallic electrically conductive plate preferably placed over an insulating layer formed over the... |
| US-5,689,133 |
ESD protection circuit An ESD protection circuit combines a split bipolar transistor with a transistor layout which exhibits very high tolerance to ESD events. The split bipolar... |
| US-5,689,132 |
Protective circuit for semiconductor integrated circuit A protective circuit for a semiconductor integrated circuit having a MOS transistor is constructed of a protective device having a first conducting type of... |
| US-5,689,130 |
Vertical semiconductor device with ground surface providing a reduced ON
resistance A semiconductor device including an N-type semiconductor substrate which includes arsenic as an impurity, a first electrode formed on a main surface of the... |
| US-5,689,129 |
High efficiency power MOS switch A power MOS switch (40) is an array of MOS devices that includes alternating drain columns and source columns. Each drain column includes a plurality of separate... |
| US-5,689,128 |
High density trenched DMOS transistor The cell density of a trenched DMOS transistor is increased by overcoming the problem of lateral diffusion of deep P+body regions. This problem is solved in... |
| US-5,689,127 |
Vertical double-gate field effect transistor A vertical double-gate field effect transistor includes a source layer, an epitaxial channel layer and a drain layer arranged in a stack on a bulk or SOI... |
| US-5,689,126 |
Semiconductor memory device having stacked capacitor In a stacked capacitor for a DRAM cell, including a lower electrode layer, an upper electrode layer and an insulating layer therebetween, at least two insulating... |
| US-5,689,125 |
Cadmium sulfide interface layers for improving III-V semiconductor
device performance and characteristics In a Schottky metal junction semiconductor device, a CdS interface layer, having a thickness of under 100 angstroms, is positioned under the Schottky barrier... |
| US-5,689,124 |
Semiconductor device A semiconductor device comprises a silicon substrate, at least one compound semiconductor layer formed on the silicon substrate and including a GaAs ... |
| US-5,689,123 |
III-V aresenide-nitride semiconductor materials and devices III-V arsenide-nitride semiconductor crystals, methods for producing such crystals and devices employing such crystals. Group III elements are combined with... |
| US-5,689,122 |
InP/InGaAs monolithic integrated demultiplexer, photodetector, and
heterojunction bipolar transistor The present invention relates to a monolithic integrated demultiplexing photoreceiver that is formed on a semi-insulating InP substrate. A frequency routing... |
| US-5,689,121 |
Insulated-gate semiconductor device An insulated-gate semiconductor device comprises a P type emitter layer, an N.sup.- high-resistive base layer formed on the P type emitter layer, and a P type... |
| US-5,689,120 |
MOS field effect transistor in a dynamic random access memory device and
method for fabricating the same The present invention provides a field effect transistor comprising the following elements. An insulation film is provided on a semiconductor substrate. The... |
| US-5,689,118 |
Grid and method of manufacturing such grid The invention relates to a slit pattern, to be referred to as grid, comprising a plurality of laminations arranged parallel, which, to form a slit pattern, are... |
Copyright 2008−2012 Patents.com
