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Current Sampling

Current Sampling-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).


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Multi-channel dual-mode digital control led driving circuit and led lamp
Shenzhen Skyworth Semiconductor Design Center Co. Ltd
October 12, 2017 - N°20170295632

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). By means of feeding back an adjustment current for the load (70) by the digital control module (40), and feeding back and adjusting a current of the ...
Method of manufacturing semiconductor devices by using sampling plans
Qoniac Gmbh
August 24, 2017 - N°20170242425

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. A sampling model ...
Multi-band heat flux gauge
Worcester Polytechnic Institute
August 10, 2017 - N°20170227400

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 ...
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Silicon-controlled rectifier current-protection circuit, related operating method, and dimming circuit and lighting device containing the ...
Hynetek Semiconductor Co., Ltd.
May 25, 2017 - N°20170150559

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, ...
System and method for switched power supply current sampling
Hynetek Semiconductor Co., Ltd.
May 25, 2017 - N°20170149334

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 ...
Photovoltaic combiner box monitoring system
Beijing Boe Energy Technology Co., Ltd. Et Al
April 27, 2017 - N°20170117847

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 ...
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Driving circuit and driving method for permanent magnet synchronous motor
Silergy Semiconductor Technology (hangzhou) Ltd
March 23, 2017 - N°20170085196

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 ...
Control circuit and control method for switching power supply operating in quasi resonant mode
Silergy Semiconductor Technology (hangzhou) Ltd
March 02, 2017 - N°20170063241

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 ...
Systems and methods to sample current measurements in energy storage devices
General Electric Company
February 23, 2017 - N°20170052242

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. The current signal is indicative of a current at an energy storage asset ...
Voltage sense control circuit, voltage sense control driving circuit and driving method for permanent magnet ...
Silergy Semiconductor Technology (hangzhou) Ltd
February 09, 2017 - N°20170040921

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 ...
Voltage sense control circuit, voltage sense control method and isolated converter thereof
Silergy Semiconductor Technology (hangzhou) Ltd
January 26, 2017 - N°20170025957

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 ...
Dimming circuit and dimming system suitable for scr dimmer circuit
Sengled Optoelectronics Co., Ltd
December 15, 2016 - N°20160366735

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. The dimming circuit also includes the power factor correction circuit to receive ...
Control circuit, control method and flyback converter of primary-side feedback control thereof
Silergy Semiconductor Technology (hangzhou) Ltd.
October 20, 2016 - N°20160308447

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 ...
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An electrical circuit and a method for measuring the power consumption of an led lighting ...
Zhejiang Shenghui Lighting Co.,ltd
August 25, 2016 - N°20160245849

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 ...
Gradient coil checking device and magnetic resonance imaging system
Siemens Healthcare Gmbh
July 07, 2016 - N°20160195596

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 ...
Regenerative braking controlling system and method
Siemens Healthcare Gmbh
June 30, 2016 - N°20160190959

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. The armature current sampling module samples current of the three phase armature windings. The power ...
Method of current compensation based on division-sigma control for dc/dc converter
National Tsing Hua University
June 09, 2016 - N°20160164407

A method is provided for current compensation. The method is based on division-sigma (d-Σ) control for a dc/dc converter. Inductance changes are allowed with d-Σ digital control achieved. Loop gain can be quickly adjusted. The disadvantage of average current-mode control (acmc) is solved, where the disadvantage is a reduction of the response speed caused by ...
Current sampling circuit and method
National Tsing Hua University
April 21, 2016 - N°20160109487

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 ...
Power converter
Delta Electronics, Inc.
March 03, 2016 - N°20160065069

A power converting circuit includes a converter. The converter receives and converts an input power to provide power for a load. The converter includes a power storage unit, a switch unit, a capacitor unit, and a current sampling unit. The power storage unit includes input and output terminals. The switch unit includes first and second switches, which are series connected ...
Current sampling method and current sampling apparatus for isolated power converter
Delta Electronics (shanghai) Co., Ltd
December 31, 2015 - N°20150381061

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. The current sampling apparatus includes: a first sampling circuit coupled to the primary side of the isolated transformer and sampling a total current of ...
Control circuit in power factor correction circuit
Inventronics (hangzhou), Inc.
December 24, 2015 - N°20150372588

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 ...
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