38results about "Pulse generation by galvano-magnetic devices" patented technology

A circuit for generating an output signal, which depends on a physical useful quantity includes means for detecting the physical useful quantity, wherein the means for detecting is arranged to generate an output signal, which depends on the physical useful quantity, a control signal for the means for detecting and, with an unchanged control signal, on an external control quantity. The circuit further includes sensor means for detecting the external disturbing quantity and for providing a sensor signal, which depends on the external disturbing quantity and means for processing the sensor signal to influence the control signal dependent on the sensor signal such that the influence of the external disturbing quantity on the output signal is reduced.

The inventive circuitry on a semiconductor chip includes a first functional element having a first electronic functional-element parameter that exhibits a dependence relating to the mechanical stress present in the semiconductor circuit chip in accordance with a first functional-element stress influence function. The first functional element provides a first output signal based on the first electronic functional-element parameter and mechanical stress. A second functional element has a second electronic functional-element parameter that exhibits a dependence in relation to the mechanical stress present in the semiconductor circuit chip in accordance with a second functional-element stress influence function. The second functional element is configured to provide a second output signal based on the second electronic functional-element parameter and the mechanical stress. A combiner combines the first and second output signals to obtain a resulting output signal exhibiting a predefined dependence on the mechanical stress present in the semiconductor circuit chip.

A magneto-sensitive integrated circuit which amplifies a magneto-sensitive output voltage of a Hall element by an amplifier to generate an amplified voltage, converts an output voltage of the amplifier into a digital signal by an A / D converter; and generates a reference voltage of magnitude corresponding to an indicated value. The amplifier includes a voltage superposition element which superposes a DC voltage corresponding to the reference voltage on the amplified voltage to generate the output voltage of the amplifier.

A method (500), a handheld electronic device (102) and an external accessory (402) for controlling at least one function of a plurality of functions of the handheld electronic device is provided. The method includes determining (504) whether the handheld electronic device is docked in an external accessory. Further, the method includes measuring (506) a first magnetic field density when the handheld electronic device is docked in the external accessory. Furthermore, the method includes generating (508) a signal to activate at least one function, based on an electrical parameter.

A sensor circuit has: a sensor portion that obtains, as an electrical signal, information on an object to be measured or detected; and a control circuit that controls the operation of the sensor portion. The control circuit receives a start input signal inputted thereto from outside for making the sensor portion operate only for a given duration after the start input signal is inputted thereto. With this configuration, it is possible to reduce the current consumption by arbitrarily controlling a period of an intermittent operation of the sensor circuit.

A device, system and method for adaptively tracking amplitude boundary values of a real time sensor output signal. In accordance with the method of the present invention, an amplitude boundary value, which may be a peak or min amplitude value, representing the current amplitude boundary of the sensor output signal is stored within a digital counter. A two-tap DAC is utilized to convert the digitally stored amplitude boundary value into a reference signal level corresponding in amplitude to the amplitude boundary value. The DAC also converts the amplitude boundary value into an offset reference signal level corresponding in amplitude to the amplitude boundary value offset by a specified multiple of the DAC resolution. The reference signal level and offset reference signal are compared with the real time sensor signal and the digitally stored amplitude boundary value is adjusted in accordance with which reference signal level exceeds the real time sensor signal.

An integrated circuit that does not involve increase in power consumption or decrease in switching probability during a write operation that occur when a latch circuit using STT-MTJ device, etc. of the prior art is operated at high speed is provided. The integrated circuit 1 includes: a memory element 1B where write occurs when a specified period τ has elapsed after a write signal is input; and a basic circuit element 1A, which is an elementary device constituting a circuit and has a data retaining function, and characterized in that an operation frequency f1 in a first operation mode in the process of memory access of the basic circuit element 1A satisfies the following relation:τ>λ1 / f1(0<λ1≦1).

Clock signals are distributed on a chip by applying an oscillating magnetic field to the chip. Local clock generation circuits including magnetic field sensors are distributed around the chip and are coupled to local clocked circuitry on the chip. The magnetic field sensors may include clock magnetic tunnel junctions (MTJs) in which a magnetic orientation of the free layer is free to rotate in the free layer plane in response to the applied magnetic field. The MTJ resistance alternates between a high resistance value and a low resistance value as the free layer magnetization rotates. Clock generation circuitry coupled to the clock MTJs senses voltage oscillations caused by the alternating resistance of the clock MTJs. The clock generation circuitry includes amplifiers, which convert the sensed voltage into local clock signals.

A current sensor includes a semiconductor substrate, a ring shaped magnetic core having a center opening and a gap and provided to a surface of the substrate, and a Hall element provided to the surface and placed in the gap of the magnetic core such that a control current for operating the Hall element flows perpendicular to the surface of the substrate. The magnetic core and the Hall element are formed to the substrate by semiconductor manufacturing techniques. Therefore, the Hall element can be placed in the gap to be accurately positioned with respect to the magnetic core and the gap can have a reduced separation distance. Thus, the current sensor can have an increased sensitivity and accurately measure a current to be detected.

A system includes a sensing system, a first chopped circuit, a second chopped circuit, and a multiplexer. The sensing system is configured to provide input signals. The first chopped circuit is configured to switch in response to the input signals crossing a first limit and to provide a first output signal that is valid during some chopping phases. The second chopped circuit is configured to switch in response to the input signals crossing a second limit and to provide a second output signal that is valid during other chopping phases. The multiplexer is configured to switch between the first output signal and the second output signal to provide a valid output signal during all chopping phases.

The invention provides a magnetoelectric data trigger triggered by a magnetic field and an implementation method thereof. The magnetoelectric data trigger comprises three layers of magnetoelectric heterojunctions and copper coils uniformly wound on the peripheries of the heterojunctions, and magnetic field pulse trigger signals are provided by electromagnets applied to two ends of the rectangularmagnetoelectric heterojunctions. Magnetization of different degrees is generated by controlling a bias magnetic field to induce a magnetostriction phase through the magnetoelectric effect, so that thedynamic magnetomechanical strain of the magnetoelectric heterojunctions is regulated and controlled, and the output voltage maintaining and converting functions are achieved by changing the directionand residual magnetism occurring in the bias magnetic field under the excitation of an alternating magnetic field. Therefore, the ferroelectric layers of the magnetoelectric heterojunctions generatenonvolatile voltage and cause the change of the output high / low level state, thereby realizing the tracking and maintaining functions of classic data triggering. Compared with a traditional D trigger,the magnetoelectric data trigger has the remarkable advantages of being low in loss, quick in response, simple in wiring and the like, and can replace the traditional D trigger and be applied to a modern digital system.

The invention discloses a high-temperature plasma gas superconducting electromagnetic coil and a microwave pulse generation device. The superconducting electromagnetic coil comprises an insulating outer body, wherein an electromagnetic coil, an electric detonator and explosive are packaged in the insulating outer body; the electromagnetic coil is wound to be spiral from a tubular electric conductor; the tubular electric conductor is in a vacuum state and is filled with mercury; two ends of an inner hole of the tubular electric conductor are welded and sealed; the explosive and the electric detonator are filled in a voltage cathode expansion body; and a gas-guide hole is formed in the insulating outer body at the end, away from the electric detonator, of the voltage cathode expansion body. The electromagnetic coil is wound to be spiral from the tubular electric conductor, the tubular electric conductor is sealed and vacuumized and is filled with mercury, the mercury inside the electric conductor is gasified instantly to form the high-temperature plasma gas superconducting electromagnetic coil under the effects of high voltage and strong current during electrification, and an ultrastrong electromagnetic field is generated; and therefore, current leading to a virtual cathode microwave generator can be improved conveniently, and ultrastrong microwave pulse waves are generated.

Clock signals are distributed on a chip by applying an oscillating magnetic field to the chip. Local clock generation circuits including magnetic field sensors are distributed around the chip and are coupled to local clocked circuitry on the chip. The magnetic field sensors may include clock magnetic tunnel junctions (MTJs) in which a magnetic orientation of the free layer is free to rotate in the free layer plane in response to the applied magnetic field. The MTJ resistance alternates between a high resistance value and a low resistance value as the free layer magnetization rotates. Clock generation circuitry coupled to the clock MTJs senses voltage oscillations caused by the alternating resistance of the clock MTJs. The clock generation circuitry includes amplifiers, which convert the sensed voltage into local clock signals.

An electric power supply system for a Hall effect electric thruster. The Hall effect electric thruster includes an anode, a cathode, a heater for the cathode and an igniter. The electric power supply system includes a first power supply source to power the anode, a second power supply source to power the heater and a power supply unit to electrically supply the igniter. The power supply unit includes a third power supply source and a passive electric circuit. The third power supply source powers the passive electric circuit and is configured to generate a voltage in the form of at least one pulse.

The invention discloses a multi-turn LTD pulse generator which mainly comprises a resistor RL, M diodes Di, M switching tubes Qi and M LTD modules. The high-voltage pulse generator is small in size, all-solid-state and high in repetition frequency, and the rising time and the falling time of pulses, the pulse width and the pulse amplitude can be flexibly adjusted.

A pulse generator comprises a mounting to hold two bodies in proximity to each other. Two magnetic elements may be movably placed in the mounting, and the magnetic elements will align with each other in one of two stable states. A coil surrounds the magnetic elements in the mounting, and a force application device applies a force to the first magnetic element to cause the first magnetic element to break the current alignment and thereby make the first and second magnetic elements realign to the other stable state. The movement of the magnets generates a pulse in the coil which may be detected by suitable circuitry and used. The device may be used inter alia to count rotations or linear movements, or to provide switching or remote control without the need for a separate power source.

In an offset cancelling circuit of a Hall element, a voltage is applied from four directions and from outside such that a current flowing in the Hall element is switched by 90°, to set a first state through a fourth state, and output voltages of the Hall element in the first state through the fourth state are averaged.

The invention discloses a magnetic switch pulse generator for electric pulse rock breaking. The magnetic switch pulse generator comprises a power supply, a rectifying and filtering module, an energy storage module, a switch module, a transformer, a pre-breakdown module, a magnetic switch module and a load, wherein the power supply charges the whole pulse generator, and the rectifying and filtering module rectifies and filters voltage waveforms input by the power supply; the switch module adjusts the discharge frequency of the pulse generator; voltage is boosted through the transformer, the pre-breakdown module continues to boost, and a load channel is punctured by rising edge steepening instantaneous high-pulse voltage; the energy storage module stores energy, and after the pre-breakdown module breaks down the load, the magnetic switch module controls the pre-breakdown module to inject instantaneous pulse energy into the load; and the magnetic switch module has the function of isolating high voltage and high current at the two ends of the load. The system can be flexibly selected and designed according to load types, and has the advantages of high portability, high rock breaking energy consumption efficiency and the like.