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Duty Cycle patents

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 Two-stage phase mixer circuit patent thumbnailnew patent Two-stage phase mixer circuit
Apparatuses and methods are directed to preventing duty cycle distortion in an electronic apparatus. The apparatus generally includes a first phase mixer stage configured to interpolate a first and a second input signal to provide a first intermediate signal and further configured to interpolate the second input signal and a third input signal to provide a second intermediate signal, the first phase mixer stage distorting duty cycle in providing the first intermediate signal.
Micron Technology, Inc.


 Method for operating an internal combustion engine patent thumbnailnew patent Method for operating an internal combustion engine
A method for operating an internal combustion engine, wherein a valve of a cylinder is opened by a cam of a camshaft within a duty cycle of the engine, and a specified quantity of fuel is supplied to the cylinder. A dimension of the cam and/or a position of the cam on the camshaft is measured after the cam and/or the camshaft has been produced.
Volkswagen Aktiengesellschaft


 System and  temperature control for a transport refrigeration system patent thumbnailnew patent System and temperature control for a transport refrigeration system
A system and method for temperature control for a transport refrigeration system (trs) is provided. Particularly, a method for temperature control of an internal space of a refrigerated transport unit is provided.
Thermo King Corporation


 Light-emitting device, device and  adjusting the light emission of a light-emitting diode comprising phosphorus patent thumbnailLight-emitting device, device and adjusting the light emission of a light-emitting diode comprising phosphorus
A light-emitting device including: a light-emitting diode including an active zone coupled to phosphorus; a detector of a spectrum and of an intensity of a light to be emitted by the light-emitting diode; a switched-mode electric power supply configured to electrically power the light-emitting diode with a periodic signal with a duty cycle α such that αε]0;1]; a controller of the switched-mode electric power supply which can alter at least one of a peak value, a period, and the duty cycle α of the periodic signal according to the spectrum and intensity of the light to be detected and according to target values of the spectrum and of the intensity.. .
Commissariat A L'energie Atomique Et Aux Energies Alternatives


 Configurable harmonic filtering patent thumbnailConfigurable harmonic filtering
A system for rejecting a selected harmonic from an input signal is disclosed. The system includes a mixer for creating a signal of new frequency from two input signals of different frequencies.
Nxp B.v.


 Duty cycle correction circuit and image sensing device including the same patent thumbnailDuty cycle correction circuit and image sensing device including the same
A duty cycle correction circuit includes an inversion block suitable for generating a first inverted clock that is in an inversion relationship with a first clock and a second inverted clock that is in an inversion relationship with a second clock, in response to the first clock and the second clock, and a correction block suitable for generating a first corrected clock having a corrected duty cycle relative to the first clock and a second corrected clock having a corrected duty cycle relative to the second clock, based on a logic state of the first clock, a logic state of the second clock, a logic state of the first inverted clock, and a logic state of the second inverted clock.. .
Sk Hynix Inc.


 Duty cycle correction circuit and image sensing device including the same patent thumbnailDuty cycle correction circuit and image sensing device including the same
A duty cycle correction circuit includes a detection block suitable for detecting a duty cycle of a first clock in response to the first clock and a second clock, and a correction block suitable for generating a first corrected clock having a corrected duty cycle relative to the first clock and a second corrected clock having a corrected duty cycle relative to the second clock, based on a detection result of the detection block.. .
Sk Hynix Inc.


 Quaternary/ternary modulation selecting circuit and associated method patent thumbnailQuaternary/ternary modulation selecting circuit and associated method
A quaternary/ternary modulation selecting method of an audio amplifier includes: generating a ternary signal and a quaternary signal; generating a plurality of pulses with limited duty cycles; and selecting one of the quaternary signal, the ternary signal and the plurality of pulses for an output stage of the audio amplifier.. .
Elite Semiconductor Memory Technology Inc.


 Motor health monitoring and medical device incorporating same patent thumbnailMotor health monitoring and medical device incorporating same
Apparatus are provided for motor control systems and related medical devices. In one embodiment, a control system includes a motor having a rotor, a modulation module coupled to the motor, and a control module coupled to the motor and the modulation module.
Medtronic Minimed, Inc.


 Circuit and  frequency synthesis for signal detection in automatic voltage regulation for synchronous generators patent thumbnailCircuit and frequency synthesis for signal detection in automatic voltage regulation for synchronous generators
Automatic voltage regulation is shown involving full wave rectifying a power signal and generating a reference corresponding to an operating voltage level, line sampling the power signal and comparing it to the reference to generate a line sync signal synchronized to the power signal. Producing 90° out of phase signals synchronized to the line sync signal with a pll locked onto the line sync signal that outputs a phase error signal.

Motor driving device with rotation and stop setting mode and the driving method thereof


A motor driving device with stop mode setting and driving method thereof comprises a pwm converting circuit, an oscillator circuit, a first comparator, a second comparator, and a control unit. The second comparator compares a tunable stop setting signal with an analog signal to output a stop setting signal to the control unit.
Amteck Semiconductor Co., Ltd.


Predictive current control in bidirectional power converter


A power converter can be controlled to generate a target output power. The control process may include obtaining a target current reference for the power converter, sensing an output current of the power converter, and determining a difference between the target current reference and the sensed output current.
University Of Connecticut


Analog assisted digital switch regulator


A device includes a digital switch regulator to supply an output voltage and a first current to a load based on a reference voltage. The device also includes an analog circuit to supply a second current to the load in addition to the first current based on a duty cycle of the digital switch regulator..
Micron Technology, Inc.


Increasing radio frequency power of activation messages by adding dead time


A trainable transceiver for controlling a remote device includes a transceiver circuit, a user input device, and a control circuit. The transceiver circuit is configured to receive a first activation signal from an original transmitter and configured to transmit a second activation signal.
Gentex Corporation


Dynamic pulse-width modulation motor control and medical device incorporating same


Apparatus are provided for motor control systems and related medical devices. In one embodiment, a control system includes a motor having a rotor, a sensor to obtain a measured displacement that is influenced by rotation of the rotor, and a control module coupled to the sensor.
Medtronic Minimed, Inc.


Adaptation of fracturing fluids


Fracturing systems and methods for increasing the conductivity of a flow path between a reservoir formation and a wellbore are presented that include varying a proppant concentration of a fracturing fluid in response to a measured characteristic from the wellbore during the fracturing process. During the injection of proppant pulses into the wellbore, one or more of a pulse length, pulse height, pulse shape, or duty cycle of the proppant concentration is varied.
Halliburton Energy Services, Inc.


Galvanically isolated monitoring circuit


There is described a system for measuring an environmental parameter such as temperature experienced by a resistive component such as a thermistor (107) in a galvanically isolated circuit, or for measuring the voltage developed by a component. The system comprises a measurement circuit (1) comprising a voltage pulse generator (114).
Technelec Ltd


Electric vehicle supply equipment with temperature controlled current


In electric vehicle supply equipment (evse), interruption of charging due to overheating is prevented by adjusting the pulse duty cycle on the control pilot conductor communicating the maximum allowed current level to the electric vehicle, the adjustment being performed whenever the evse temperature exceeds a predetermined threshold temperature below the maximum operating temperature as a function of the approach of the temperature to the maximum operating temperature.. .
Aerovironment, Inc.


Almost blank subframe based orthogonal resource allocation in a wireless network environment


An example method for facilitating almost blank sub-frame (abs) based orthogonal resource allocation in a wireless network environment is provided and includes receiving at a serving evolved universal terrestrial radio access network (e-utran) nodeb (enb), abs patterns from a plurality of neighboring enbs in a orthogonal frequency-division multiplexing based network, each neighboring enb transmitting a separate abs pattern, setting a maximum duty cycle of physical downlink control channel in a frame to be transmitted by the serving enb within its serving cell, and computing an optimal abs pattern at the serving enb subject to the maximum duty cycle and based on the abs patterns received from the plurality of neighboring enbs. In specific embodiments, computing the optimal abs pattern includes identifying neighboring enbs transmitting at each sub-frame of the frame, identifying sub-frames transmitted by a least number of neighboring enbs, and selecting each identified sub-frame for configuring as an abs..
Cisco Technology, Inc.


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A communications system and a determining an optimal duty cycle to minimise overall energy consumption


There is provided a communications network comprising a network node and a resource limited node. The network node comprises a controller operable to estimate an optimal duty cycle for various operating modes of the resource limited node to minimise the overall resource consumption of the resource limited node; and a transmitter operable to notify parameters of the estimated optimal duty cycle to the resource limited node..
Alcatel Lucent


Systems and methods for a variable frequency multiplier power converter


A power converter for converting dc power to dc power includes an inverter stage having two or more switched inverters configured to receive dc power from a source and produce a switched ac output power signal. A transformation stage is coupled to receive the switched output power signal from the inverter stage, shape the output power signal, and produce a shaped power signal.
Massachusetts Institute Of Technology


Multi-level switching regulator circuits and methods with finite state machine control


The present disclosure includes multi-level switching regulator circuits and methods with finite state machine control. In one embodiment, a circuit comprises a switching regulator and a finite state machine.
Qualcomm Incorporated


A control unit for a segment liquid crystal display and a method thereof


A unit (10; 11; 12; 13) used to control a segment liquid crystal display (15; 16). The segment liquid crystal display (15; 16) includes at least a backplane electrode (20) and at least a front plane electrode (25) both associated with a same segment of the segment liquid crystal display (15; 16).

Automated control for detection of flow limitation


A respiratory flow limitation detection device, which can include an airway pressure treatment generator, determines a flow limitation measure 506 based one or more shape indices for detecting partial obstruction and a measure of a patient's ventilation or respiratory duty cycle. The shape indices may be based on function(s) that ascertain the likelihood of the presence of m-shaped breathing patterns and/or chair-shaped breathing patterns.
Resmed Limited


Pop free auto-chopper


Embodiments described herein provide a method and apparatus for increasing dynamic range. The method begins when a signal is input to a compander and the compander gain of the signal is measured.
Qualcomm Incorporated


Amplification circuit adjusting duty cycle of output signal and receiver including the same


A receiver includes a first stage buffer, a second stage buffer and a third stage buffer. The first stage buffer includes an input portion electrically coupled to a first voltage node, and configured to change a voltage level of an output node in response to an input signal, first and second load portions electrically coupled between a second voltage node and the output node, and electrically coupled to each other and a duty cycle adjustment portion electrically coupled between the first and second load portions, and configured to provide a correction current to the output node through the first load portion..
Sk Hynix Inc.


Buck power stage with multiple mosfet types


A buck voltage converter is disclosed. The buck voltage generator includes a controller configured to generate one or more pulse width modulation (pwm) signals, and a plurality of serially connected switches configured to receive the pwm signals and to generate an output voltage signal at an output terminal based on the received pwm signals.
Empower Semiconductor


Pulse translation modulation for power converters


A control method is provided for a power converter comprising a switched power stage configured to generate an output voltage from an input voltage according to a pulsed control signal controlling switching of the switched power stage in dependence of a voltage error signal. The voltage error signal is a difference between a reference voltage and the output voltage.
Zentrum Mikroelektronik Dresden Ag


Pulse width modulation (pwm) driving scheme and bezel reduction


This application sets forth a circuit configuration for a light emitting diode (led) or organic light emitting diode (oled) display. The circuit configuration allows for the pulse-width modulation (pwm) of each emission signal sent to each line of the display.
Apple Inc.


Thermal mitigation with power duty cycle


An apparatus is provided. The apparatus includes a plurality of cores and a temperature sensor configured to monitor a temperature for the cores.
Qualcomm Incorporated


A communications system, an access network node and a optimising energy consumed in a communication network


The access network node includes a control unit operable to estimate a belief on a network condition for a resource limited node of a plurality of resource limited nodes based on network observations and a history profile of the network observations; dynamically update the belief for the resource limited node in the access network node; determine that the severity of the updated belief in the network condition is indicative that a change in sleep duty cycle of the resource limited node is required; determine that correlation between the resource limited nodes within the plurality of resource limited nodes is indicative that a change in sleep duty cycle of the resource limited node is required; and update the sleep duty cycle of the resource limited node to improve or optimize the overall energy consumed in the resource limited nodes while achieving a specific detection threshold.. .
Alcatel Lucent


Methods and wireless coexistence based on transceiver chain emphasis


Methods and apparatus for reduction of interference between a plurality of wireless interfaces. In one exemplary embodiment, a device having a first (e.g., wi-fi) interface and a second (e.g., bluetooth) interface monitors interference between its interfaces.
Apple Inc.


Down-conversion circuit


A down-conversion circuit for a receiver circuit is disclosed, the down-conversion circuit comprises a first passive switching mixer arranged to down-convert a received radio frequency, rf, signal with a first local oscillator, lo, signal (lo1) having a first duty cycle for generating a first down-converted signal at an output port of the first passive switching mixer. The down-conversion circuit further comprises a second passive switching mixer arranged to down-convert the received rf signal with a second lo signal (lo2) having the same lo frequency as the first lo signal (lo1) and a second duty cycle, different from the first duty cycle, for generating a second down-converted signal at an output port of the second passive switching mixer.
Telefonaktiebolaget Lm Ericsson (publ)


Clock calibration using asynchronous digital sampling


Described is an apparatus which comprises: an asynchronous clock generator to generate an asynchronous clock signal; a digital sampler for sampling a signal using the asynchronous clock signal; a duty cycle corrector (dcc) to receive a differential input clock and to generate a differential output clock, wherein the digital sampler to sample at least one of an output clock from the differential output clock; and a counter to count output of the digital sampler and to provide a control to the dcc to adjust duty cycle of the differential output clock.. .
Intel Corporation


Method and improving a load independent buffer


Described herein are apparatus, system, and method for reducing electrical over-stress of transistors and for generating an output with deterministic duty cycle for load independent buffers. The apparatus comprises a feedback capacitor electrically coupled between an input terminal and an output terminal of a buffer; and a switch, electrically parallel to the feedback capacitor and operable to electrically short the feedback capacitor in response to a control signal, wherein the switch causes a deterministic voltage level on the input terminal..

Fully i/q balanced quadrature radio frequency mixer with low noise and low conversion loss


A method, an apparatus, and a system product for mixing radio frequency signals are provided. In one aspect, the apparatus is configured to perform switching of switches based on first, second, third, and fourth phased half duty clock signals.
Qualcomm Incorporated


Integrated boost asymmetrical half bridge power conversion topology


A method of operating a dc-dc converter includes providing a first error signal to a frequency controller, the first error signal derived from a difference between a discontinuous conduction mode input current and a sinusoidal current reference, providing a second error signal to a duty cycle controller, the second error signal derived from a difference between an output signal and an output reference signal, and combining a frequency signal from the frequency controller and a duty cycle signal from the duty cycle controller to produce a complimentary pulse train for driving the dc-dc converter to both control an input power factor and regulate the output signal.. .
Ge Lighting Solutions, Llc


Continuous current mode multi-load power regulator


Described is an apparatus which comprises: an interconnect to provide current; a bridge having a high-side switch and a low-side switch, wherein the high-side switch and the low-side switch are coupled to an inductor, and wherein the inductor is coupled to the interconnect; a plurality of switching load stages coupled to the interconnect, wherein each of the switching load stages of the plurality to provide a voltage supply to a load; a first controller to control duty cycle of an input to the bridge to regulate the current provided to the interconnect; and a second controller to control duty cycle of a plurality of inputs, each input to be received by a corresponding switching load stage of the plurality of switching load stages.. .
Intel Corporation


Electrical power converter circuits


The preferred embodiments of the present invention changes the switch control mechanisms of switched-mode power converter circuits. Instead of controlling the duty cycle of switch control signals, the preferred embodiments of the present invention controls electrical switches based on the voltage level on the fire line of ac main power source.

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Open trap mass spectrometer


An open electrostatic trap mass spectrometer is disclosed for operation with wide and diverging ion packets. Signal on detector is composed of signals corresponding to multiplicity of ion cycles, called multiplets.
Leco Corporation


System and controlling forward/reverse rotation of fan


A control system includes a motor, an interface circuit, a motor controller and a detection control circuit. The interface circuit receives and converts a pulse width modulation signal.
Delta Electronics, Inc.


System and automated open loop fan control


An information handling system includes a pressure transducer and a fan controller. The pressure transducer produces a pressure reading in response to airflow through the information handling system.
Dell Products, Lp


Compact driver for a light emitting diode having an integrated dual output


The current invention relates to a led driver (10) for driving at least two led strings (131, 133) comprising: a dual output power converter (103) for converting an input voltage (vin) into two different output voltages for driving two sets of said at least two led strings (131, 133), a controller (107) for controlling the dual output power converter (103) based on at least one input set point, the dual output converter (103) comprising a switched capacitor converter comprising a plurality of switches, a plurality of capacitors, the outputs of the dual output power converter (103) being connected to internal nodes of the dual power converter (103), the controller (107) being further adapted to deliver pwm output control signals for driving the switches, the duty cycle of which being a function of said at least one input set point. The invention also relates to a lighting system (1) comprising such a driver (10)..
Philips Lighting Holding B.v.


System and managing bandwidth responsive to the duty cycle of an abr client


A scheme for managing bandwidth in a multi-client environment including one or more abr clients and, optionally, one or more non-abr clients. When an abr client enters a sleep phase of its duty cycle, phantom tokens may be issued to simulate full capacity of the network link, wherein phantom packets are used for abr bandwidth calculation.
Ericsson Television Inc.


System and managing bandwidth responsive to the duty cycle of an abr client


A scheme for managing bandwidth in a multi-client environment including one or more abr clients and, optionally, one or more non-abr clients. When an abr client enters a sleep phase of its duty cycle, phantom tokens may be issued to simulate full capacity of the network link, wherein phantom packets are used for abr bandwidth calculation.
Ericsson Television Inc.


Programmable synchronous clock divider


A divided clock signal is generated from an input clock signal. The duty cycle of the divided clock signal is programmed by generating a compare value based on values of duty cycle input and a divide value of the input clock signal.

Increasing pwm resolution for digitally controlled motor control applications


Systems and methods for increasing pulse width modulation (pwm) resolution for digitally controlled motor control applications are described. For example, in some embodiments, a method may include receiving a clock signal having a given period; identifying a target duty cycle; calculating a comparison point based upon the given period and the target duty cycle; generating a pwm signal based upon the clock signal using the comparison point; and varying the comparison point to increase a resolution of an effective duty cycle of the pwm signal..
Texas Instruments Incorporated


Bidirectional electrical signal converter


A bidirectional ac-to-dc and dc-to-ac circuit includes a first inductor-capacitor (lc) circuit connected to an ac power source, a transistor synchronized with the ac power source signal, a second lc circuit electrically connected to the synchronized transistor and the first inductor-capacitor circuit, a high-frequency switching transistor electrically connected to the second inductor-capacitor circuit and a direct current (dc) load, and a controller connected to the high-frequency switching transistor. The controller identifies an error between a measured dc output signal and a predetermined dc output signal that is applied to the dc load, and adjusts a duty cycle of a pulse width modulation (pwm) switching signal for the high-frequency transistor to reduce the identified error..
Indiana University Research And Technology Corporation


Tunable wireless energy transfer systems


Described herein are improved configurations for a wireless power transfer. A power source for driving a resonator includes a switching amplifier.
Witricity Corporation


Driving pixel circuit and driving device thereof


Embodiments of the present disclosure relate to a technical field of display technology, and provide a driving method for a pixel circuit and a driving device thereof. A problem of cost increase can be solved which is caused by an increase in a number of storages when adjustment is made by way of gamma curve and table lookup, by means of the technical solutions according to embodiments of the present disclosure.
Boe Technology Group Co., Ltd.


Single-shot duty cycle generator for a switched-mode power supply


A switched-mode power supply device includes a power switch configured to transfer power from a supply line to a load in switched-mode; a first oscillator configured to operate at a frequency proportional to a voltage of the supply line; a second oscillator configured to operate at a frequency proportional to a voltage of the load; and a regulator configured to operate the power switch according to a duty cycle based on a ratio between the first and second oscillator frequencies.. .
Stmicroelectronics (grenoble 2) Sas


Duty cycle detection circuit and duty cycle correction circuit including the same


A duty cycle detection circuit includes a reset unit suitable for resetting a first capacitor and a second capacitor based on a reset signal, a first charging/discharging unit suitable for charging the first capacitor while a clock is in a first level and discharging the first capacitor while the clock is in a second level, a second charging/discharging unit suitable for charging the second capacitor while the clock is in the second level and discharging the second capacitor while the clock is in the first level, and a differential amplifier suitable for amplifying a voltage difference between the first capacitor and the second capacitor based on an amplification enable signal and generating a detection signal as a result of the amplification.. .
Sk Hynix Inc.


Forwarded clock jitter reduction


In some embodiments, a differential amplifier with duty cycle correction is provided.. .
Intel Corporation


Dynamic operating frequency control of a buck power converter having a variable voltage output


A switch controller for a variable output voltage power converter includes a pulse width modulator (pwm) output producing a pulsed signal for driving a power converter switch. A mode selector output is connected to a multiplier.
Astec International Limited


Systems and methods for remotely controlling a wall socket


A system permits wirelessly controlling the duty cycle of alternating current at a wall electrical outlet (152) remote from a wall electrical outlet (144) which is controlled by a wall switch (142).. .
E5 Global Innovations, Inc.


Operationally optimized renewable electrical energy power system


A renewable electrical energy power system is provided with aspects and circuitry that can optimize operation of a dc-ac inverter. Alternative electrical energy sources may include solar cells and solar panels.
Ampt, Llc


Sine wave oscillator and inductive sensors


A sine wave oscillator for an inductive sensor system is disclosed. The sine wave oscillator comprises a decoupler and a low-pass filter, wherein the decoupler is configured to provide a pulse width modulated signal as a decoupled signal at one output of the decoupler.
Zf Friedrichshafen Ag


Light emitting diode driver having a logic unit for generating a frequency control signal


A light-emitting diode driver includes a power switch, a logic unit and a pulse adjustment signal generator. The power switch is used to control a charging level of a light-emitting diode voltage terminal, and controlled to be turned on or off by a pulse-width modulation signal.
Au Optronics Corp.


Power-compensated fusion furnace


A power-compensated fusion furnace includes a power control system having one switching device per heating element, power measurement circuitry, a master temperature sensor, and a controller. Each switching device is electrically connected to a respective heating element.
Spex Sample Prep Llc


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Method for operating a power-compensated fusion furnace


A method for operating a power-compensated fusion furnace that includes a power control system having one switching device per heating element, power measurement circuitry, a master temperature sensor, and a controller. Each switching device is electrically connected to a respective heating element.
Spex Sample Prep Llc


Light emitting diode driver


Devices, systems, software, and methods for control of light emitting diodes (leds) via an led driver circuit that receives a dimmed ac input signal from a dimmer and generates an output signal to power and dim an led element. The led driver circuit comprises a dimmed input sense circuit, a microcontroller, and a power supply circuit.
Crestron Electronics, Inc.


Light-emitting diode lighting device with synchronized pwm dimming control


An led lighting device includes a luminescent circuit, a detecting circuit, an adjustable current source and a dimming control circuit. The luminescent circuit is driven by a rectified ac voltage for providing light.
Iml International


Managing power consumption of transmission circuitry in a wireless communication device


Methods, apparatuses and computer readable media are described that manage transmit power levels for a wireless device connected to a network access system of a wireless network. Processing circuitry in the wireless device obtains a target average transmit power level.
Apple Inc.


Method and power-efficient joint dimming and visible light communication


A method, an apparatus, and a computer program product for communication are provided. The apparatus obtains a message for communication using visible light communication (vlc) through a light emitting diode (led) luminary device and formats the message using a synchronization signal followed by one or more data signals.
Qualcomm Incorporated


Power converter with pre-compensation for dead-time insertion


A power converter has a phase leg with upper and lower switching devices coupled across a dc link. A junction between the devices is coupled to a load.
Ford Global Technologies, Llc


Low input voltage boost converter with peak inductor current control and offset compensated zero detection


The low input voltage boost converter with peak inductor current control and offset compensated zero detection provide a boost converter scheme to harvest energy from sources with small output voltages. Some embodiments described herein includes a thermoelectric boost converter that combines an ipeak control scheme with offset compensation and duty cycled comparators to enable energy harvesting from teg inputs as low as 5 mv to 10 mv, and the peak inductor current is independent to first order of the input voltage and output voltage.
University Of Virginia Patent Foundation


Method of controlling a rate at which an upstream process feeds a conditioned product to a downstream process


A method of controlling an upstream and a downstream process wherein the upstream process conditions a stream of product delivered to the downstream process is provided. The control method uses an empirically determined formula to determine a metric for adjusting the activity of the upstream process to thereby adjust the rate with which the upstream process conditions and feeds a stream of conditioned product to the downstream process.
Heat And Control, Inc.


Device for charging an automotive vehicle battery making it possible to compensate for the harmonics, automotive vehicle furnished with such a charging device and corresponding charging


A battery charging device for a motor vehicle battery with at least partially electric traction includes a filtering stage to be connected to an electrical power supply network, a voltage buck stage connected to the filtering stage, a voltage boost stage coupled to the voltage buck stage and to be connected to the battery, and a regulation unit to impose chopping duty cycles on the voltage buck stage and on the voltage boost stage. The regulation unit compensates the harmonics generated by the voltage buck stage in the filtering stage, acting on the voltage buck stage..
Renault S.a.s.


Implantable electroacupuncture device and method


An electroacupuncture device includes 1) a housing configured to be implanted beneath a skin surface of the patient at an acupoint within the patient, 2) a central electrode centrally located on a first surface of the housing, 3) an annular electrode that surrounds the central electrode on the first surface of the housing, the annular electrode being spaced apart from the central electrode, and 4) pulse generation circuitry located within the housing, wherein the pulse generation circuitry generates stimulation sessions at a duty cycle that is less than 0.05 and applies the stimulation sessions at the acupoint by way of the central electrode and the annular electrode in accordance with the duty cycle.. .
Valencia Technologies Corporation


Method and determining a target light intensity from a phase-control signal


A dimmable ballast circuit for a compact fluorescent lamp controls the intensity of a lamp tube in response to a phase-control voltage received from a dimmer switch. The ballast circuit comprises a phase-control-to-dc converter circuit that receives the phase-control voltage, which is characterized by a duty cycle defining a target intensity of the lamp tube, and generates a dc voltage representative of the duty cycle of the phase-control voltage.
Lutron Electronics Co., Inc.


Electric power tool and motor control method thereof


An electric power tool includes a motor, a power supply circuit for supplying power to the motor, and a control device which is able to measure current of the motor and control duty cycle of the power supply circuit. When the measured current of the motor is greater than a predetermined current value, the duty cycle of the power supply circuit is increased to a first predetermined value.
Nanjing Chervon Industry Co., Ltd.


High duty cycle ion spectrometer


An ion spectrometer is provided, comprising: an ion source, arranged to generate ions continuously with a first range of mass to charge ratios; and an ion trap, arranged to receive ions from the ion source along an axis, and to eject ions with a second range of mass to charge ratios orthogonally to that axis, the second range of mass to charge ratios being narrower than the first range of mass to charge ratios. In some embodiments, ions generated by the ion source continuously flow into the ion trap.
Thermo Fisher Scientific (bremen) Gmbh


Noise eliminating method and adapter


A noise eliminating method adapted to be used with an adapter and a touch device electrically connected with each other is provided. The adapter includes a voltage transformer, a switch and a control circuit.
Au Optronics Corp.


Systems and methods for determining a duty cycle for a variable voltage converter


A vehicle includes a traction battery, an electric machine, and a variable voltage converter. The variable voltage converter includes an inductor and is disposed electrically between the traction battery and electric machine.
Ford Global Technologies, Llc


System and process for retina phototherapy


A system and process for treating retinal diseases includes passing a plurality of radiant beams, i.e., laser light beams, through an optical lens or mask to optically shape the beams. The shaped beams are applied to at least a portion of the retina.
Ojai Retinal Technology, Llc


Reference voltage training device and method thereof


Provided are a reference voltage training device and a method thereof. The reference voltage training device includes a comparator configured to compare a toggle signal with a reference voltage and output a comparison signal, a duty cycle detector configured to check a duty ratio of the comparison signal, and a reference voltage level changing unit configured to fix the reference voltage when the duty ratio meets a predetermined condition and to change a level of the reference voltage when the duty ratio does not meet the predetermined condition.
Samsung Electronics Co., Ltd.


Method and wireless power in-band signaling by load generation


Exemplary implementations are directed to wireless power in-band signaling by load generation. An apparatus for communicating with a wireless power transmitter is provided.
Qualcomm Incorporated


Holding cabinets with closed-loop environmental control systems, methods for controlling environmental conditions in holding cabinets, and computer-readable media storing instructions for implementing such methods


Methods disclosed herein may be methods for maintaining environmental conditions in a cabinet. Such methods may comprise determining a relative humidity set point.
Henny Penny Corporation


Elevator braking in a battery powered elevator system


An elevator system includes a battery; a machine having a motor to impart motion to an elevator car; an inverter having a plurality of switches to convert dc power from the battery to ac power for the machine in a motoring mode; a speed sensor coupled to the machine, the speed sensor to generate a speed signal indicative of machine speed; and a controller to apply braking signals to a group of the switches in a braking mode, the braking signals having a duty cycle in response to the speed signal.. .
Otis Elevator Company


Method and system for modifying a beacon light source for use in a light based positioning system


In one aspect, the present disclosure related to a method for modifying a beacon light source for use in a light-based positioning system. In some embodiments, the method includes selecting a modulation scheme for the light source, determining a duty cycle for the light source based on the modulation scheme, the duty cycle having a proportion of time the light source is in an on state and a corresponding proportion of time the light source is in an off state, the proportion of time the light source is in an off state resulting in reduced luminosity of the light source, and supplying additional power to the light source to compensate for the reduced luminosity of the light source by the duty cycle..

Dynamic adaptive and non-adaptive mode switching


A method of operating a transceiver may comprise operating in an adaptive mode in which transmissions from the transceiver are halted after detection of interference, performing a clear channel assessment (cca), as a result of the cca, detecting energy from an interferer above a predetermined threshold, and switching operation to a non-adaptive mode in which the transceiver is configured to alternate transmission periods and idle periods according to a duty cycle. Then, the method may comprise performing an energy detect, as a result of the energy detect, subsequently detecting the energy from the interferer below the predetermined threshold, and switching operation to the adaptive mode..

Methods and systems for operating hybrid power devices using multiple current-dependent switching patterns


An integrated circuit includes a hybrid switch having first and second switching devices of different type therein. A control circuit is provided, which is configured to drive the first and second devices with respective first and second control signals having first and second unequal duty cycles, respectively, when the first and second devices are supporting a forward current in a first current range.

Implementing clock receiver with low jitter and enhanced duty cycle


A method and a clock receiver circuit for implementing low jitter and enhanced duty cycle, and a design structure on which the subject circuit resides are provided. The clock receiver circuit accepts single-ended complementary metal oxide semiconductor (cmos) and differential clock signals.

Implementing clock receiver with low jitter and enhanced duty cycle


A method and a clock receiver circuit for implementing low jitter and enhanced duty cycle, and a design structure on which the subject circuit resides are provided. The clock receiver circuit accepts single-ended complementary metal oxide semiconductor (cmos) and differential clock signals.

Methods and systems for operating hybrid power devices using driver circuits that perform indirect instantaneous load current sensing


An integrated circuit is provided with an mcu, which is configured to generate a pwm control signal that is free of switching pattern information therein. A current-estimating gate driver is provided, which is responsive to the pwm signal.

Buck-boost power converter and associated mode transition control module


A buck-boost power converter and a mode transition control module. The mode transition control module includes a buck duty cycle sensing and comparison circuit and a boost duty cycle sensing and comparison circuit.

Method and energy harvest from a proximity coupling device


The disclosure generally relates to a method and apparatus for energy harvest from a proximity coupling device (pcd) by a proximity integrated circuit card. In one embodiment, the picc includes an integrated ble.

Micro demand response scheduling


A method includes generating a duty cycle expression for heating, ventilation, air condition (hvac) systems. The method includes estimating a baseline cycling percentage that maintains an indoor temperature at a particular setpoint based on the generated duty cycle expression and a curtailed cycling percentage that maintains the indoor temperature within a particular temperate interval of the particular setpoint.

Zero flow lubrication for a high pressure fuel pump


Methods and systems are providing for improving zero flow lubrication (zfl) of a high pressure fuel pump coupled to direct fuel injectors via a direct injection fuel rail. A zfl transfer function for the fuel pump is learned while fuel is at non-nominal fuel bulk modulus conditions and corrected for variations from a nominal fuel bulk modulus estimate.

Duty cycle detection circuit and semiconductor apparatus including the same


A duty cycle detection circuit may include a detection block configured to generate a duty detection signal by detecting a duty cycle of an input clock; and a current amount control block configured to control a current flowing through the detection block in response to the input clock, regardless of a variation in a frequency of the input clock.. .

Duty cycle detection circuit and method


A duty cycle detection circuit may include: a timing signal generation unit to generate a plurality of timing signal groups by selectively combining multi-phase clock signals according to an enable signal; and a detection unit to generate a duty detection signal by selectively combining signals of the plurality of timing signal groups according to the enable signal.. .

Methods and circuits to reduce pop noise in an audio device


A class d amplifier receives and amplifies a differential analog signal which is then differentially integrated. Two pulse width modulators generate pulse signals corresponding to the differentially integrated analog signal and two power units generate output pulse signals.

Method to reduce losses in a high voltage dc link converter


A multiple stage switching type converter circuit provided between an ac source and a dc source is provided. The circuit includes a boost converter stage coupled to the ac source, a dc link capacitor stage comprising a dc link capacitor decoupled from an ac source and a dc source, and an isolated dc-dc converter stage coupled to the dc source.

Flyback converter output current evaluation circuit and evaluation method


An output current calculating circuit for a flyback converter operating under ccm and dcm is disclosed. The off current value ion and the blanking current value ileb flowing through a sensing resistor are calculated using a detection module and are summed together using a current summing unit.

System and a switched-mode power supply


In accordance with an embodiment, a method of operating a switched-mode power supply includes starting up the switched-mode power supply by applying a first switching signal to a control node of the first switching transistor and a second switching signal to a control node of a second switching transistor, where a duty cycle of the first switching signal is less than a duty cycle of the second switching signal. After starting up the switched mode power supply, the switched mode power supply is operated by applying a third switching signal to the control node of the first switching transistor and a fourth switching signal to the control node of the second switching transistor, where a duty cycle of the third switching signal is substantially equal to a duty cycle of the fourth switching signal..

Buck-boost power converter and operation thereof


A method comprises detecting an input voltage and an output voltage of a buck-boost converter, wherein the buck-boost converter comprises a first high-side switch and a first low-side switch connected in series across an input capacitor, a second high-side switch and a second low-side switch connected in series across an output capacitor and an inductor coupled between a common node of the first high-side switch and the first low-side switch, and a common node of the second high-side switch and the second low-side switch and configuring the buck-boost converter such that at least one of the first high-side switch and second low-side switch operates at a fixed duty cycle mode.. .

Bidirectional electrical signal converter


A bidirectional ac-to-dc and dc-to-ac circuit includes a first inductor-capacitor (lc) circuit connected to an ac power source, a transistor synchronized with the ac power source signal, a second lc circuit electrically connected to the synchronized transistor and the first inductor-capacitor circuit, a high-frequency switching transistor electrically connected to the second inductor-capacitor circuit and a direct current (dc) load, and a controller connected to the high-frequency switching transistor. The controller identifies an error between a measured dc output signal and a predetermined dc output signal that is applied to the dc load, and adjusts a duty cycle of a pulse width modulation (pwm) switching signal for the high-frequency transistor to reduce the identified error..



Duty Cycle topics:
  • Duty Cycle
  • Computer Program
  • Distributed
  • Buffer Circuit
  • Integrated Circuit
  • Differential Amplifier
  • Duty Cycle Correction
  • Ultrasonic
  • Reference Voltage
  • Thermostat
  • Modulation
  • Wireless Power
  • Calculator
  • Control Unit
  • Bridge Inverter


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