current (Total 176283 Patents Found)

A method or providing uniform emission current from a plurality of electron emitters with a composite current voltage characteristic (620), which include surface states that provide resonant tunneling emission of electrons (260). Field emission device (200) is operated beyond a decrease in the increase of emission curr...
A multiphase circuit interrupter includes a plurality of power phase sections for establishing and interrupting electrical power carrying paths for a plurality of phases Each power phase section includes first and second conductive regions which contact one another to complete the current carrying path for the phase. T...
An amplifier circuit for detecting low level signals of positive or negative amplitude, and for producing an output pulse whenever the input signals exceed a predetermined threshold level. The threshold level, or sensitivity of the amplifier circuit, is established through use of a pair of operational transconductance ...
An apparatus of the invention includes an AC power source for providing AC electric power, a thyristor converter, being formed of self-extinctive switching elements, for converting the AC electric power to a DC excitation current, a coil for storing magnetic energy corresponding to the excitation current, and a bypass ...
A self-protecting current limiting positive temperature coefficient (PTC) resistive element arrangement protects a load circuit coupled to a power line via an actuator. Two or more PTC sections having temperature sensitive resistances are thermally coupled and electrically insulated. The PTC sections have low electrica...
A pressure actuated current interrupt device particularly useful for prismatic electrochemical cells has a cup-shaped member ( 12, 12′, 12″, 12′″, 12 IV , 12 V , 12 VI ) mounted on the cover of the cell and arranged to protrude into the interior of the cell. The cup-shaped member can be formed either ...
A wire-cut electric discharge machine in which a current supplying member is in direct contact with a wire electrode, the shape of the current supplying member and the direction of passage of the wire electrode before and after the member being adapted to each other to prevent the formation of narrow gaps of sharp wedg...
A low drop-out regulator is configured to provide high output current with a fast response during transient conditions, while also maintaining low quiescent current under DC conditions. An exemplary low drop-out regulator has an error amplifier, a current feedback amplifier, and a pass device. The low drop-out regulato...
An electric device having rotary type current collecting means through electric source cord which is made freely rotatable with respect to variations in using position of the device for preventing any twist of the cord. The means comprises an integral block of a first carrier of current feeding conductor connected to t...
Process for actuating a hydraulic prime mover through conversion of energy in water current wherein the arrangement for carrying out the process comprises at least one set of three coaxially disposed pipes. The central or main pipe serves as a cylinder to receive the impulses of the water current while the two sleeve p...
In order to achieve lateral current spreading between a current injecting or current collecting surface of an electrode and an active surface of an active region in a semiconductor device such as a light emitting diode, a layered semiconductor heterostructure is arranged between the electrode and the active surface. Th...
The automatic recording of the current-voltage characteristic of an electrostatic filter in which the characteristic obtained upon stepwise variation of the control is displayed to the operating personnel and at the same time saturation phenomena and voltage maxima are picked up....
A method with and associated apparatus for vibration-filling electrodes in a paste bath. A holding tool connected to a vertical rotary shaft carries the electrode and, arranged above it, a vibration reflection body. The electrode and vibration reflection body are immersed in the paste bath, filling of the electrode is ...
A high-gain Josephson-type two-particle tunneling detector is positioned in a borehole penetrating an earth formation and tuned for response in a frequency range of 8400 to 9600 gigahertz. Result: IR emission due to "stretching" vibration of the C-H bonds of adjacently situated hydrocarbons can be detected in s...
In a semiconductor device which includes a semiconductor substrate, a collector region of a first conductivity type formed on the semiconductor substrate, a base region of a second conductivity type reverse to the first conductivity type, an emitter region of the first conductivity type formed within the base region, a...
A special two-dimensional intrinsic base doping profile is utilized to improve the output current-voltage characteristics of a vertical bipolar transistor whose intrinsic base includes a main intrinsic portion. The special doping profile is achieved with a pair of more lightly doped base portions that encroach substant...
A device, method and system for sensing the temperature of an environment. An image sensor may be introduced into an environment having an image sensing module. The dark current noise of the image sensor may be sensed, and the temperature of the image sensor (and environment) calculated. Such a device, system and metho...
A current cell matrix type of digital-to-analog (D/A) converter to prevent deterioration of a.c. characteristics on a current path for digital-to-analog conversion includes a array of current source cells arranged in a matrix configuration. Each current source cell includes a current source transistor to generate the c...
An operational amplifier includes a first stage and a second stage, the first stage for receiving two input signals and the second stage being coupled to the first stage, wherein the second stage includes a first part with a first output of the operational amplifier, and a second part with a second output of the operat...
A differential input driver circuit ( 10, 50 ) includes first and second transistors (Q 0 , Q 3 ) as input transistors and third and fourth transistors (Q 1 , Q 2 ) as diode-connected, cross-coupled transistors. In one embodiment, first, second, third and fourth transistors are NPN bipolar transistors. The base termina...
Systems, methods, and programs for current position information management store map data and detect a current position of a vehicle using dead-reckoning navigation. The systems, methods, and programs monitor, based on the detected current position, a left-right position of the vehicle relative to a lane in which the v...
A feedback generator of a reference current may include a differential amplifier having a first input for a reference voltage, and a second input for a feedback voltage and generating an output voltage. The feedback generator may also include a first conduction path including a feedback resistor with the feedback volta...
An optical transceiver module configured for longwave optical transmission is disclosed. Significantly, the transceiver module utilizes components formerly used only for shortwave optical transmission, thereby reducing new component production and device complexity. In one embodiment, the transceiver module includes a ...
A CMOS image sensor that is capable of both voltage- and current-mode operations selects the mode based on the position of mode switches. Each pixel on the imager has a single transistor acting as either source follower for voltage readout, or transconductor for current readout. The two modes share the same readout lin...
One embodiment of the present invention includes a an embodiment of the present invention includes a non-volatile current-switching magnetic memory element including a bottom electrode; a pinning layer formed on top of the bottom electrode; a fixed layer formed on top of the pinning layer; a tunnel layer formed on top ...
A control system and method controls an output of a fuel cell. A fuel cell stack controller that receives an output request signal and that generates an oxidant request signal and a fuel request signal using a first inverse model. A fuel delivery controller receives the fuel request signal, generates a fuel command usi...
A distributed control node enables monitoring of complex energy signatures for local loads. The control node can identify energy signatures unique to local loads. The energy signature includes a complex current vector for the load in operation identifying the primary current with a real power component and a reactive p...