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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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Charging system and charging method, and power adapter
Guangdong Oppo Mobile Telecommunications Corp., Lt D.
February 15, 2018 - N°20180048175

The present disclosure discloses a charging system, a charging method and a power adapter. The system includes a battery, a first rectifier, a switch unit, a transformer, a compositing unit, a sampling unit, and a control unit. The control unit outputs a control signal to the switch unit, and adjusts a duty ratio of the control signal according to a ...
Charging system and method, and power adapter
Guangdong Oppo Mobile Telecommunications Corp., Lt D.
February 15, 2018 - N°20180048164

The present disclosure discloses a charging system and method, and a power adapter. The system includes a power adapter and a terminal. The power adapter includes a first rectifier, a switch unit, a transformer, a compositing unit, a sampling unit, and a control unit. The control unit outputs a control signal to the switch unit, and adjusts a duty ratio ...
Charging system, charging method, and power adapter
Guangdong Oppo Mobile Telecommunications Corp, Ltd
February 01, 2018 - N°20180034311

A charging system, a charging method, and a power adapter are provided. The power adapter includes a first rectification unit, a switch unit, a transformer, a second rectification unit, a first charging interface, a sampling unit, a control unit, a second charging interface, and a battery coupled to the second charging interface. The control unit is configured to output a ...
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Charging system, charging method, and power adapter
Guangdong Oppo Mobile Telecommunications Corp, Ltd
February 01, 2018 - N°20180034309

A charging system, a charging method, and a power adapter are provided. The power adapter includes a first rectification unit, a switch unit, a transformer, a second rectification unit, a first charging interface, a sampling unit, and a control unit. The control unit is configured to output a control signal to the switch unit, and adjust a duty ratio of ...
Charging system, charging method, and power adapter
Guangdong Oppo Mobile Telecommunications Corp., Ltd.
January 25, 2018 - N°20180026472

A charging system, a charging method and a power adapter are provided. The power adapter includes a first rectification unit, a switch unit, a transformer, a second rectification unit, a first charging interface, a sampling unit, and a control unit. The control unit is configured to output a control signal to the switch unit, and adjust a duty ratio of ...
Charging system and charging method, and power adapter
Guangdong Oppo Mobile Telecommunications Corp., Ltd.
November 23, 2017 - N°20170338670

The present disclosure discloses a charging system and a charging method and a power adapter. The system includes a battery, a first rectifier, a switch unit, a transformer, a second rectifier, a sampling unit and a control unit. The control unit outputs a control signal to the switch unit, and adjusts a duty ratio of the control signal according to ...
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Multifunctional wall socket
Winon Holding Company Limited
November 16, 2017 - N°20170331231

A multifunctional wall socket related to electrical conduction connecting device is provided. In one embodiment, the socket comprises a socket cover with a conventional power connector, and a usb port arranged on the socket cover. The usb port is connected to the output terminal of an ac-dc conversion module arranged on the socket cover. The ac-dc conversion module comprises a ...
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 ...
Circuit for sampling current and system for sampling current of totem-pole bridgeless circuit
Hynetek Semiconductor Co., Ltd.
July 27, 2017 - N°20170212152

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. The reset resistor and two ends of the secondary winding are connected in parallel. The sampling switch, the diode, and the current sampling resistor are connected in ...
Silicon-controlled rectifier current-protection circuit, related operating method, and dimming circuit and lighting device containing the ...
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
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 ...
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Asynchronous state estimation and control in a field-oriented control architecture
Texas Instruments Incorporated
April 13, 2017 - N°20170104430

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. Latency between the state estimation task and the control signal generation task is addressed by storing a timestamp with each input data sample ...
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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