Follow us on Twitter
twitter icon@FreshPatents


Current Sampling patents

      

This page is updated frequently with new Current Sampling-related patent applications.




 Multi-channel dual-mode digital control led driving circuit and led lamp patent thumbnailnew patent Multi-channel dual-mode digital control led driving circuit and led lamp
A multi-channel dual-mode digital control led driving circuit and an led lamp. The driving circuit comprises a current sampling module (10), a comparison and detection module (30), a digital control module (40) and a constant current control module (20).
Shenzhen Skyworth Semiconductor Design Center Co. Ltd


 Method of manufacturing semiconductor devices by using sampling plans patent thumbnailMethod of manufacturing semiconductor devices by using sampling plans
A method of manufacturing semiconductor devices includes defining a sampling plan that contains position information about metrology sites on process wafers. A first property of the process wafers is measured to obtain measurement values at measurement points, wherein a quantity of the measurement points per process wafer is at least tenfold a quantity of the metrology sites.
Qoniac Gmbh


 Multi-band heat flux gauge patent thumbnailMulti-band heat flux gauge
A noncontact temperature sensing device receives radiative emissions from a sensed object to measure radiant heat flux and computes a temperature using multiple photodiode sensors, or elements, each sensitive to a different bandwidth of near ir light. The device samples a fluctuating heat source such as a flame or explosion at a fast sampling frequency, and compares corresponding or simultaneous readings in each bandwidth for computing a ratio of the respective bands and determining a temperature via ratio pyrometry.
Worcester Polytechnic Institute


 Circuit for sampling current and system for sampling current of totem-pole bridgeless circuit patent thumbnailCircuit for sampling current and system for sampling current of totem-pole bridgeless circuit
A circuit for sampling current includes a current transformer, a reset resistor, a diode, a sampling switch, and a current sampling resistor. The current transformer includes a primary winding and a secondary winding.
Hynetek Semiconductor Co., Ltd.


 Silicon-controlled rectifier current-protection circuit, related operating method, and dimming circuit and lighting device containing the same patent thumbnailSilicon-controlled rectifier current-protection circuit, related operating method, and dimming circuit and lighting device containing the same
The present disclosure provides a silicon-controlled silicon (scr) current-protection circuit. The scr circuit includes an scr detection circuit and a protection circuit, a first terminal of the scr detection circuit being connected to a current sampling point on an output terminal of an scr device, a second terminal of the scr detection circuit being connected to a power conversion circuit, a third terminal of the scr detection circuit being connected to a first terminal of the protection circuit, and a second terminal of the protection being connected to the power conversion circuit.

 System and  switched power supply current sampling patent thumbnailSystem and switched power supply current sampling
According to an embodiment, a method of operating a switching power supply includes applying a periodic switching signal to a first switch that is coupled to an output node, detecting an offset delay between applying the periodic switching signal and a change in voltage of the output node, calculating a corrected midpoint of a half phase of the periodic switching signal based on the offset delay, generating a sampling pulse based on the corrected midpoint, and sampling a current at the output node according to the sampling pulse.. .

 Photovoltaic combiner box monitoring system patent thumbnailPhotovoltaic combiner box monitoring system
A photovoltaic combiner box monitoring system includes a current sampling circuit, a microprocessor and a communication circuit; the current sampling circuit is connected with the microprocessor to sample at least one channel of current signals and input the sampled currents to the microprocessor; and the microprocessor is connected with the communication circuit to send the current signals sampled by the current sampling circuit by the communication circuit. Thus, the photovoltaic combiner box monitoring system can sample current signals from the photovoltaic combiner box by means of the current sampling circuit and send the sampled current signals through the communication circuit..
Beijing Boe Energy Technology Co., Ltd. Et Al


 Asynchronous state estimation and control in a field-oriented control architecture patent thumbnailAsynchronous state estimation and control in a field-oriented control architecture
A motor controller architecture and method of operating the same. The motor controller asynchronously generates multiphase control signals for a multi-phase electric motor, relative to the estimation of various state parameters used in generating those control signals.
Texas Instruments Incorporated


 Driving circuit and driving  permanent magnet synchronous motor patent thumbnailDriving circuit and driving permanent magnet synchronous motor
A driving circuit of a pmsm can include a current sampling circuit configured to generate a current sampling signal by sampling a stator current information of one phase of the permanent magnet synchronous motor; a bemf circuit configured to receive the current sampling signal and a voltage sampling signal that represents a stator voltage of the phase, to estimate back electromotive force information of the phase, and to output a first voltage signal that represents the back electromotive force information; and a torque regulating circuit configured to generate an angle difference signal by calculating an angle difference between the first voltage signal and the current sampling signal, where the angle difference signal is configured to regulate an amplitude of a first u-shaped modulation wave such that a rotor current is in phase with the first u-shaped modulation wave for maximum torque per ampere.. .
Silergy Semiconductor Technology (hangzhou) Ltd


 Control circuit and control  switching power supply operating in quasi resonant mode patent thumbnailControl circuit and control switching power supply operating in quasi resonant mode
A control circuit can include: an output current sampling circuit configured to sample a current through a power switch of a switching power supply operating in a quasi-resonant mode, and to generate an output current feedback signal that represents an output current of the switching power supply; and a valley locking circuit configured to receive the output current feedback signal and a plurality of valley switching threshold voltages, where the valley locking circuit is switched to a corresponding valley from a valley currently being locked when the output current feedback signal is increased or reduced to one of the plurality of valley switching threshold voltages.. .
Silergy Semiconductor Technology (hangzhou) Ltd


Systems and methods to sample current measurements in energy storage devices

Systems and methods to sample current measurements in energy storage assets while reducing bias errors such as aliasing are provided. One example current sampling system includes an integrator circuit that receives the current signal as an input and integrates the current signal to output a charge signal.
General Electric Company

Voltage sense control circuit, voltage sense control driving circuit and driving permanent magnet synchronous motor

A driving circuit of a pmsm can include: a current sampling circuit that obtains a current sampling signal by sampling a rotor current of one phase of the pmsm; a sliding mode estimating circuit that receives the current sampling signal and a voltage sampling signal that represents a rotor voltage of the phase, estimates a back electromotive force information of the phase, and generates a first voltage signal that represents the back electromotive force information; a speed computing circuit that receives the first voltage signal, and generates an angular velocity signal that represents rotor cycle information; and a pwm control circuit that generates a pwm control signal according to the angular velocity signal, where the pwm control signal controls the turn on/off of switches in a three-phase inverter, to control an operating current of the pmsm to be a sine wave current.. .
Silergy Semiconductor Technology (hangzhou) Ltd

Voltage sense control circuit, voltage sense control method and isolated converter thereof

A voltage sense control circuit configured for an isolated converter can include: a current sampling and holding circuit configured to sample a current through a power switch to obtain a voltage sense signal that represents current information of the power switch, where the voltage sense signal is in proportion to a forward voltage drop of a rectifier device; a compensation signal generating circuit configured to generate a first current signal according to the voltage sense signal, and to generate a compensation signal according to the first current signal to compensate an output voltage feedback signal of the isolated converter to obtain a voltage feedback signal; and a voltage sampling and holding circuit configured to sample and hold the voltage feedback signal to regulate an output voltage of the isolated converter to be stable.. .
Silergy Semiconductor Technology (hangzhou) Ltd

Dimming circuit and dimming system suitable for scr dimmer circuit

The present disclosure provides a dimming circuit for scr dimmer (silicon-controlled rectifier) circuit. The dimming circuit includes a signal conversion circuit for converting an input signal to a sine-wave voltage signal and output the sine-wave voltage signal to a current sampling end of a power factor correction circuit.
Sengled Optoelectronics Co., Ltd

Control circuit, control method and flyback converter of primary-side feedback control thereof

The disclosure relates to a control circuit, a control method and a flyback converter of primary-side feedback control including the control circuit. On the basis of the current sampling signal feedback, the flyback converter of primary-side feedback control is controlled to operate in a constant on time mode when the input voltage is large, and is controlled to operate in a peak current mode when the input voltage is close to a valley.
Silergy Semiconductor Technology (hangzhou) Ltd.

Inverter phase current reconstruction apparatus and methods

Methods and apparatus are presented for sampling low side inverter phase currents, in which current sampling is selectively delayed in a given pwm cycle by a non-zero sampling delay time value from a nominal sample time if the middle pulse width value is less than a non-zero first threshold to facilitate adequate signal settling for accurate current measurement, and if a middle total continuous on-time near the end of the given pwm cycle is less than a non-zero second threshold, the middle total continuous on-time is selectively extended by adding a non-zero adjustment offset time value to a middle pulse width value for a next pwm cycle.. .
Rockwell Automation Technologies, Inc.

An electrical circuit and a measuring the power consumption of an led lighting device

Embodiments consistent with the present disclosure provide an electrical circuit and a method for measuring the power and power consumption of an led lighting device in real time. The circuit includes a controlling unit configured to process data; a display unit configured to display data received from the controlling unit and other components; a power supply and driving unit configured to supply power; an led light source; and a rf unit configured to send data to remote terminals.
Zhejiang Shenghui Lighting Co.,ltd

Gradient coil checking device and magnetic resonance imaging system

The present utility model provides a gradient coil detection device and an mri system. The gradient coil checking device for an mri system comprises: a voltage sampling circuit, comprising: a sample voltage input end, connected between a gradient power amplifier of the mri system and the gradient coil and obtaining a gradient coil sample voltage, and a sample voltage output end; a current sampling circuit, a sample current input end, connected to the gradient power amplifier of the mri system and obtaining a gradient coil sample current, and a sample current output end; a calculation unit, connected to the sample voltage output end and the sample current output end, and used for calculating a gradient coil calculated resistance according to the gradient coil sample voltage and the gradient coil sample current; a comparison unit, connected to the calculation unit, and used for comparing the gradient coil calculated resistance with a reference value to obtain a result signal.
Siemens Healthcare Gmbh

Regenerative braking controlling system and method

The regenerative braking controlling system includes an armature current sampling module, a calculating module, and an adjusting module. The calculating module includes a power calculating unit, an optimum phase angle calculating unit, an optimum regenerative current calculating unit, and a sub-optimum regenerative current calculating unit.

Method of current compensation based on division-sigma control for dc/dc converter

A method is provided for current compensation. The method is based on division-sigma (d-Σ) control for a dc/dc converter.
National Tsing Hua University

Current sampling circuit and method

Disclosed is a current sampling circuit including a proportional current output circuit and a full differential common mode negative feedback circuit, specifically the proportional current output circuit is configured to calculate a current output from a power device according to a preset proportion to obtain a first proportional current and a second proportional current, and to output the first proportional current and the second proportional current to the full differential common mode negative feedback circuit; and the full differential common mode negative feedback circuit is configured to shunt respectively the first proportional current and the second proportional current using a full differential common mode negative feedback network with a bias current in microamps to obtain a first sampling current and a second sampling current, and to output constantly the first sampling current and the second sampling current. Further disclosed is a current sampling method..

Power converter

A power converting circuit includes a converter. The converter receives and converts an input power to provide power for a load.
Delta Electronics, Inc.

Current sampling method and current sampling isolated power converter

Disclosed are a current sampling apparatus and a current sampling method for an isolated power converter. The isolated power converter includes a square wave generator, an isolated transformer, and a primary side filter circuit coupled therebetween.
Delta Electronics (shanghai) Co., Ltd

Control circuit in power factor correction circuit

A control circuit in a power factor correction (pfc) circuit includes: a multiplier, used for multiplying a voltage sampling signal by a feedback signal, and outputting a first signal; and a waveform generating module, used for generating a second signal related to a filter capacitor connected in parallel to an input end and/or an output end of a rectifier bridge. A control signal for controlling a state of a main switch transistor is generated by using the first signal, the second signal, and a current sampling signal of the main switch transistor in the pfc circuit..
Inventronics (hangzhou), Inc.

System and switched power supply current sampling

According to an embodiment, a method of operating a switching power supply includes applying a periodic switching signal to a first switch that is coupled to an output node, detecting an offset delay between applying the periodic switching signal and a change in voltage of the output node, calculating a corrected midpoint of a half phase of the periodic switching signal based on the offset delay, generating a sampling pulse based on the corrected midpoint, and sampling a current at the output node according to the sampling pulse.. .
Infineon Technologies Ag

An active front-end rectifier filter delay compensation method based on model predictive control

An active front-end rectifier filter delay compensation method based on model predictive control is disclosed. The method includes following steps: detecting a three-phase grid voltage and three-phase input current sampling value of an active front-end rectifier, and transforming both via clarke transformation to acquire grid voltage sampling values eα and eβ, and input current sampling values ifα and ifβ under a two-phase stationary coordinate system; establishing an equivalent mathematical model of rectifier on the basis of voltage balancing equation (1) in an actual rectifier, and establishing an equivalent filter model on the basis of a transfer function corresponding to the actual filter, thus constituting a filter delay observer; and, compensating the difference value between the input current sampling values ifα and ifβ, and equivalent current sampling values iofα and iofβ into an input of the filter delay observer via a proportional controller.
Tianjin University

Method and system for processing data for evaluating a quality level of a dataset

A method processes data for evaluating quality level of an original dataset. The original dataset is obtained from an automated sequencing of a chain of nucleotides and represents a plurality of total mapped reads.
UniversitÉ De Strasbourg

Ceiling fan device with led lamp

A ceiling fan device includes a ceiling fan provided with a light emitting diode (led) lamp, and an actuating and dimming integrator including an actuating and dimming integration circuit which includes an actuating circuit module, a regulating constant current circuit module, and a main control chip. The regulating constant current circuit module includes a first photovoltaic coupler, a digital/analogue (d/a) converter circuit, a comparator chip, and a sampling resistor.

Induction current sampling device and bridgeless pfc circuit

Disclosed are an induction current sampling device and method for a bridgeless pfc circuit. The device includes a first sampling unit, a second sampling circuit and a third sampling circuit, wherein the first sampling unit, connected in serial with a first switch transistor of the bridgeless pfc circuit, is configured to sample a current flowing through the first switch transistor to acquire a first sampling signal v1; the the second sampling unit, connected in serial with a second switch transistor of the bridgeless pfc circuit, is configured to sample a current flowing through the second switch transistor to acquire a second sampling signal v2; and the third sampling unit, with one terminal connected with a ground of the bridgeless pfc circuit and the other terminal connected with a negative output of a pfc capacitor of the bridgeless pfc circuit, is configured to sample a current flowing through a boost diode of the bridgeless pfc circuit to acquire a third sampling signal v3..
Zte Corporation

Method and device for recovering data

A method for recovering data comprising the following steps: first, selecting a first basis set from a basis set. Then, recovering the data by the first basis set at a current sampling time point to generate a first estimated data.
Macronix International Co., Ltd.

Method of taking power with low-voltage bypass by integrated circuit for ac direct driving leds and the integrated circuit

The prior integrated circuits (ics) for ac direct driving leds all adopt a method of taking power direct from an ac high voltage to supply power to the ics, but such ics have the disadvantages of large power consumption, poor reliability and high cost, etc. The present invention provides a method of taking power with low-voltage bypass for supplying low-voltage power to an ic.
Hefei Spruce Optoelectronic Technology Co., Ltd.

Scr dimming circuit and dimming control method

A silicon-controlled rectifier (scr) dimming circuit and a dimming control method are disclosed. The scr dimming circuit includes a scr element, a rectifier circuit, a filter circuit, a power converter, and a dimming control circuit.
Silergy Semiconductor Technology (hangzhou) Ltd.

Digital current equalizing device, analog current equalizing device, current equalizing method and system

Provided are a digital current equalizing device, an analog current equalizing device, a current equalizing method and a system. The digital current equalizing device comprises: an output current sampling amplifying module (102), a digital processing module (104), and a main power frequency conversion module (106).

Apparatus and method to recover a data signal

Embodiments of the present invention disclose an apparatus and method for recovering a data signal in a digital transmission. A computer processor receives a data signal from a data signal input wire.
International Business Machines Corporation

Apparatus and method to recover a data signal

Embodiments of the present invention disclose an apparatus and method for recovering a data signal in a digital transmission. A computer processor receives a data signal from a data signal input wire.
International Business Machines Corporation

Fan controller and server system with the fan controller

The fan controller controls a plurality of fans in a server system according to a fan control signal. The fan controller comprises a control unit, a current monitor, a power supply module, current sampling units and switches.
Inventec (pudong) Technology Corporation

Charger with over-voltage and over-current protection and using the same

A charger with over-voltage and over-current protection and a method for using the same are provided. The charger comprises a first interface, a second interface, a voltage stabilizing unit, a control unit, an input voltage sampling unit, a switch unit, and a current sampling unit.

Battery power detecting device and method

A battery power detecting device and method are provided. It can detect the battery power of a battery rod in a non-disposable electronic cigarette.

Overcurrent protection method, circuit and integrated circuit

Disclosed is an overcurrent protection method and circuit and an integrated circuit. The overcurrent protection circuit includes an output circuit, an overcurrent sampling circuit and an overcurrent protection loop circuit.
Fairchild Semiconductor Corporation

Oversampling data signal and oversampling apparatus thereof

An oversampling method for data signal includes oversampling data strobe signal and data signal according to sampling phases to generate first and second sampling results, performing edge detection on the first and second sampling results to obtain first and second edge positions where edges are detected, calculating and storing first offset according to the first edge position and the corresponding second edge position when the second edge position are obtained, using first offset obtain in a previous sampling cycle as the first offset in a current sampling cycle when the second edge position aren't obtained, calculating first sampling point according to the first edge position; calculating second sampling point according to the first sampling point and the corresponding first offset, and selecting and outputting the corresponding second sampling results according to the second sampling point.. .
Realtek Semiconductor Corp.

Short-circuit protection structure

A short-circuit protection structure comprises first and second high-voltage transistors, a control circuit, a first current sampling resistor for the first transistor and a second current sampling resistor for the second transistor. The control circuit controls switching period and duty cycle of the first transistor and the second transistor, a drain terminal of the first transistor is connected to a drain terminal of the second transistor, a source terminal of the first transistor is connected to the first current sampling resistor, and a source terminal of the second transistor is connected to the second current sampling resistor; a gate terminal of the first transistor and a gate terminal of the second transistor are connected to a driver stage of the control circuit.

Feedforward control method and apparatus

A feedforward control method, which includes: determining, whether the input voltage rapidly changes or slowly changes; when the input voltage rapidly changes, determining, a first feedforward gain coefficient corresponding to the difference between a input voltage reference value and a first input voltage measurement value acquired by a high-speed low-precision analog-to-digital converter in a current sampling period; when the input voltage slowly changes, determining a second feedforward gain coefficient which is a ratio of the input voltage reference value to a second input voltage measurement value acquired by a low-speed high-precision analog-to-digital converter in the current sampling period; and using the first or the second feedforward gain coefficient as a feedforward gain coefficient of a current input voltage, multiplying the feedforward gain coefficient by an output value of a feedback loop of an output voltage, so as to control stable output of the output voltage.. .

Urine flow measuring apparatus

A urine flow measuring apparatus that includes a container for receiving urine, measuring means for measuring the weight and/or volume of urine received by the container, and memory means for recording the weight and/or volume measured by the measuring means. Through a controller the measuring means: continually measures the weight and/or volume of the container at regular sampling intervals; and at each sampling interval, identifies if a positive change in the weight and/or volume of the container has occurred and then compares results within a data set, the data set including a result from the current sampling interval and results from all the sampling intervals during a given period.

Diffractive optical element, design method thereof and application thereof to solar cell

Disclosed are a diffractive optical element, a design method thereof and the application thereof in a solar cell. The design method for a design modulation thickness of a sampling point of the diffractive optical element comprises: calculating the modulation thickness of the current sampling point for each wavelength component; obtaining a series of alternative modulation thicknesses which are mutually equivalent for each modulation thickness, wherein a difference between the corresponding modulation phases is an integral multiple of 2π; and selecting one modulation thickness from the alternative modulation thicknesses of each wavelength to determine the design modulation thickness of the current sampling point.

System and automatically classifying documents

A system and method for automatically classifying documents using an annotated topic tree is provided. A set of topics may be extracted from a document corpus such that each document in the document corpus is associated with a topic model.

Intelligent pulse temperature control charger

A battery charger employs a temperature sensor and single chip microcomputer (scm) programs for controlling and performs charging with a pulse current. The polarization occurred during battery charging can be eliminated and the charging voltage and current can be automatically regulated based on ambient temperature.

Large-current transformer for electronic round power meter and making

Disclosed is a large-current transformer for an electronic round power meter, including a current sampling coil (2) and a current stick (1), where the current stick is a slotted stick, a middle section of the slotted stick is sleeved with the current sampling coil, inner slots at two ends of the slotted stick are inlaid with a first current insert (8) and a second current insert (10) respectively. The current transformer is easy to mount, has a reliable connection, a low temperature increase, high precision, and a low cost.

Current control circuit and method thereof for a power converter

A power converter used in the current control circuit and control method, consisting of a converter, a voltage divider circuit, a current sampling circuit, a first gain circuit, a differential amplifier, a second gain circuit, a multiplier, a saw tooth wave generator, a modulation comparator, and a driver. The invention samples inductor current through the current sampling circuit and generates the current sense signal, then processes again.

Sensorless field-oriented control (foc) without current sampling for motors

An apparatus includes a sensorless field-oriented control (foc) motor controller. The motor controller includes a pulse width modulation (pwm) controller configured to generate pwm signals and to provide the pwm signals to an inverter.

Wireless voltage reference broadcast in a distributed energy metering system

A system and method of wireless voltage reference broadcast in a distributed energy metering system is provided. A voltage reference is determined at a distribution hub for wirelessly and transmitted in voltage reference data frames providing voltage samples and a clock synchronization from an alternating current (ac) line under measurement.

Circuit and overcurrent detection of power switch

An overcurrent detection circuit for a power switch comprises a sampling circuit and a comparing circuit. The sampling circuit is configured to perform current sampling on the power switch using a sampling metal-oxide-semiconductor field-effect transistor (mosfet) and an amplifier, convert a sample current into a sample voltage and transmit the sample voltage to the comparing circuit, and clamp operating voltages of the comparing circuit and of an output circuit of the amplifier by a serially connected clamping mosfet.



Current Sampling topics:
  • Current Sampling
  • Sampling Circuit
  • Reference Voltage
  • Load Testing
  • Central Processing Unit
  • Calibration
  • Integrated Circuit
  • Clock Frequency
  • Version Control
  • Trapezoidal


  • Follow us on Twitter
    twitter icon@FreshPatents

    ###

    This listing is a sample listing of patent applications related to Current Sampling for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Current Sampling with additional patents listed. Browse our RSS directory or Search for other possible listings.


    0.8809

    file did exist - 2649

    1 - 1 - 51