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Duty Cycle patents



      
           
This page is updated frequently with new Duty Cycle-related patent applications. Subscribe to the Duty Cycle RSS feed to automatically get the update: related Duty RSS feeds. RSS updates for this page: Duty Cycle RSS RSS


Photon modulation management system

Method for operating a glow plug, and glow plug control device

Date/App# patent app List of recent Duty Cycle-related patents
09/11/14
20140254229
 Modular high-frequency converter and method for operating the same patent thumbnailnew patent Modular high-frequency converter and method for operating the same
A modular high-frequency converter includes submodules, each having an input-side half bridge and a dc link circuit with a dc link capacitance connected in parallel to the half bridge. A dc link circuit voltage drop across the dc link capacitance of each submodule is controlled to a target voltage by adjusting a duty cycle with a closed-loop control structure having a pilot control and a downstream closed-loop error control.
09/11/14
20140254221
 Constant power inverter with crest factor control patent thumbnailnew patent Constant power inverter with crest factor control
An electrosurgical generator is provided. The generator includes a dc-dc buck converter configured to output a dc waveform, the dc-dc buck converter including at least one first switching element operated at a first duty cycle; a dc-ac boost converter coupled to the dc-dc buck converter and including at least one second switching element operated at a second duty cycle, the dc-ac boost converter configured to convert the dc waveform to generate at least one electrosurgical waveform; and a controller coupled to the dc-dc buck converter and the dc-ac boost converter and configured to adjust the first duty cycle and the second duty cycle to operate the at least one electrosurgical waveform in at least one of constant current, constant voltage, or constant power modes..
09/11/14
20140254215
 Controller for a power converter and method of operating the same patent thumbnailnew patent Controller for a power converter and method of operating the same
A control system for a power converter with reduced power dissipation and method of operating the same. In one embodiment, the control system includes a first controller coupled to a primary winding of a transformer and configured to control a duty cycle of a power switch to regulate an output characteristic of the power converter.
09/11/14
20140253695
 System for distributing auto-stereoscopic images patent thumbnailnew patent System for distributing auto-stereoscopic images
A system for distributing auto-stereoscopic images, a parallax blocking mask and methods for producing a parallax blocking mask. A parallax blocking mask is provided as an “add-on” for an existing image display device having a flat panel type display screen.
09/11/14
20140253251
 Multi-power mode reference clock with constant duty cycle patent thumbnailnew patent Multi-power mode reference clock with constant duty cycle
A power management apparatus and method for maintaining a substantially constant duty cycle of a reference clock signal in a multi-power oscillator, includes a first output power transistor in electrical parallel with a series arrangement of a second output power transistor and a switch, and a crystal oscillator capacitively coupled to a common gate of the first and second output power transistors, wherein a level of the reference clock signal power output is a normal power level when the switch is open and the level of the reference clock signal power output is a higher power level when the switch is closed to operate the second output power transistor in parallel with the first output power transistor.. .
09/11/14
20140253210
 Voltage level shifter with a low-latency voltage boost circuit patent thumbnailnew patent Voltage level shifter with a low-latency voltage boost circuit
Certain aspects of the present disclosure provide a voltage level shifting circuit employing a low latency, ac-coupled voltage boost circuit, as well as other circuits and apparatus incorporating such a level shifting circuit. Such level shifting circuits provide significantly lower latency compared to conventional level shifters (e.g., latency reduced by at least a factor of two).
09/11/14
20140253193
 Differential amplifiers, clock generator circuits, delay lines and methods patent thumbnailnew patent Differential amplifiers, clock generator circuits, delay lines and methods
A differential amplifier may be configured to have a duty cycle and/or gain that is adjustable, such as by adjusting the switch points of circuitry in the differential amplifier. The differential amplifier may alternatively or additionally have a hysteresis function by, for example, using a signal feedback from the output of the amplifier to adjust the switch points of circuitry in the differential amplifier.
09/11/14
20140253056
 Power supply with adaptive-controlled output voltage patent thumbnailnew patent Power supply with adaptive-controlled output voltage
A power supply circuit includes a pre-regulator configured to receive an input voltage and to generate an output voltage, and a switching current regulator coupled to an output of the pre-regulator and configured to regulate a level of current supplied to an output load. The switching current regulator is controlled by a switching signal having a duty cycle.
09/11/14
20140251982
 Multiple linked appliance with auxiliary outlet patent thumbnailnew patent Multiple linked appliance with auxiliary outlet
A combination microwave and refrigerator system is constructed having a single plug input supply. The microwave oven is adapted to provide power to a refrigerator, and to auxiliary receptacles adapted for low power operation.
09/11/14
20140251978
 Method for operating a glow plug, and glow plug control device patent thumbnailnew patent Method for operating a glow plug, and glow plug control device
A method for operating a glow plug by means of pulse-width-modulated voltage pulses which are generated by controlling a load transistor, wherein a heating current flowing through the glow plug is measured and the duty cycle of the pulse-width-modulated voltage pulses is changed in accordance with values of the heating current. The heating current can be measured by means of a current measurement circuit, through which a sense current flows parallel to the load transistor, and the value of the heating current is calculated by multiplying a measured value of the sense current by a kilis factor, wherein the temperature of the current measurement circuit is measured and the kilis factor is defined in accordance with the measured circuit temperature.
09/11/14
20140250778
new patent Photon modulation management system
Embodiments described herein provide systems for optimizing organism growth, destruction or repair, by controlling the duty cycle, wavelength band and frequency of photon bursts to an organism, through the high frequency modulation of photons in an individual color spectrum to the organism, where the photon modulation is based upon the specific needs of the organism. Devices for the optimization of organism growth, destruction or repair through the high frequency modulation of photons of individual color spectrum to the organism are also provided.
09/04/14
20140247901
Universal transceivers and supplementary receivers with sparse coding technique option
A transmitter is provided having a signal generator configured to generate a sparse code signal where the signal has a substantially small duty cycle of about 0.5% and substantially small pulse widths, with the distance between the pulses defined by the sparse code, and sufficiently low carrier signal level so that the signal can only be detected via a matched receiver.. .
09/04/14
20140247761
Wireless communication device power reduction method and apparatus
A wireless communications power saving method and apparatus is provided. The method includes, when no reverse link traffic exists and no forward link traffic has been received for a predetermined amount of time, establishing, at a terminal, a reverse link transmission pilot signal duty cycle, and boosting overhead channel signal transmission power during on slots and gating overhead channel and pilot signal transmission power during off slots.
09/04/14
20140247032
Systems and methods for feed-forward control of load current in dc to dc buck converters
A system for controlling load current in a voltage converter includes a current normalization module that receives a first measurement corresponding to the load current, receives a second measurement corresponding to an inductor current, and matches a first gain of the first measurement corresponding to the load current to a second gain of the second measurement corresponding to the inductor current to generate a normalized load current. A feed-forward generation module receives the normalized load current from the current normalization module and generates a load current feed-forward (lcff) signal based on the normalized load current.
09/04/14
20140247029
Boost converter
A boost converter for converting between an input voltage and an output voltage is disclosed. The boost converter includes an inductor connected to the input voltage a switching arrangement for controlling the switching of the inductor current to an output load at the output voltage and a controller for controlling the switching arrangement to provide duty cycle control.
09/04/14
20140246924
Telemetry system with wireless power receiver and monitoring devices
A wireless power receiver includes a rectifier coupled to an antenna which is configured to receive a wireless power signal, and convert the wireless power signal to a direct current input signal. A direct current-to-direct current converter generates a direct current output signal based in part on the direct current input signal and a pulse-width modulation signal.
08/28/14
20140245307
Application and situation-aware community sensing
Techniques, systems, and articles of manufacture for application and situation-aware community sensing. A method includes processing one or more sensor data requirements for each of multiple sensing applications and one or more user preferences for sensing, determining a sensing strategy for multiple sensors corresponding to the multiple sensing applications based on the one or more sensor data requirements and the one or more user preferences for sensing, wherein said sensing strategy comprises logic for executing a sensing task, and scheduling a sensor duty cycle and a sampling frequency for each of the multiple sensors based on the sensing strategy needed to execute the sensing task..
08/28/14
20140244141
Using camshaft timing device with hydraulic lock in an intermediate position for vehicle restarts
A method of using a mid-position lock vct phaser in an engine with a stop-start mode of operation with the steps of: when the engine is in a stop mode of the stop-start mode: adjusting a duty cycle of an actuator coupled to the control valve of the phaser to command the control valve to the retard mode; maintaining the duty cycle of the actuator to command the control valve to remain in the retard mode until an automatic restart of the engine. If the key is detected in an off position either restarting the engine; commanding the phaser to the detent mode, such that the lock pin is moved to a locked position and the phaser is locked in an intermediate phase angle position; and shutting down the engine or commanding the phaser to detent mode during engine cranking during a next engine restart..
08/28/14
20140241730
Method and apparatus for 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.
08/28/14
20140239927
Transition control for a hybrid switched-mode power supply (smps)
Systems and methods for transition control in a hybrid switched-mode power supply (smps). In some embodiments, a hybrid smps may include linear circuitry configured to produce an output voltage proportional to a variable duty cycle when the smps operates in linear mode and hysteretic circuitry coupled to the linear circuitry, the hysteretic circuitry configured to cause the duty cycle to assume one of two predetermined values when the smps operates in hysteretic mode.
08/28/14
20140239910
Current steering circuit and current steering method for controlling branch current flowing through branch
A current steering circuit for controlling a branch current flowing through a branch is provided. The branch is coupled to a first main switch.
08/28/14
20140239841
Led lamp with adjustable color
A color adjustable lamp. The lamp includes a first white emitter source having a plurality of colors so as to emit a first combined spectrum of light.
08/28/14
20140238844
Methods and apparatus for generating strongly-ionized plasmas with ionizational instabilities
A plasma generator includes a chamber for confining a feed gas. An anode is positioned inside the chamber.
08/28/14
20140238291
Self-powered slip plate to reduce skin-friction drag on a marine vessel
An anti-friction slip plate for mounting on a hull of a marine vessel to reduce skin friction drag by acoustically generating microcavitation bubbles at a wetted area of the hull. The slip plate comprises a plate-like enclosure, an energy extraction mechanism to extract power from water current flowing along the hull when underway, a power generator driven by the energy extraction mechanism to produce electrical power, an acoustic signal generator powered by the power generator to produce an acoustic signal, and a series of transducers excited by the acoustic signal to effect emission of acoustic waves that produce cavitation bubbles in the wetted area.
08/21/14
20140233005
System and method for adjusting seed laser pulse width to control euv output energy
A method and apparatus for controlling the seed laser in a laser produced plasma (lpp) extreme ultraviolet (euv) light system are disclosed. In one embodiment, a seed laser generates both pre-pulses and main pulses which are amplified and irradiate a target material.
08/21/14
20140232474
Enhanced numerical controlled oscillator
A numerical controlled oscillator generating an output signal with a digital clock signal having a variable frequency is disclosed. The numerical oscillator is controlled by a programmable numerical value being subject to a transfer function and comprises a comparator configured to compare an output of the transfer function with a duty cycle register to generate the output signal..
08/21/14
20140232374
Measurement of plural rf sensor devices in a pulsed rf plasma reactor
In a plasma reactor having pulsed rf plasma power sources, measurements by rf sensors of nulls attributable to pulse duty cycles are replaced by non-zero measurements synthesized from prior non-zero measurements, to prevent feedback control system instabilities.. .
08/21/14
20140232367
Switching regulator control method
A control method for preventing an output voltage of a buck switching regulator from falling when an input voltage of the buck switching regulator falls includes: converting the input voltage into a charging current; determining a duty cycle of the buck switching regulator according to the charging current and the output voltage; and adjusting a switching frequency of a pulse width modulation signal in the buck switching regulator when the input voltage falls to a specific voltage and an off time of the pulse width modulation signal reaches a minimum value, in order to change the duty cycle to prevent the output voltage from falling.. .
08/21/14
20140232288
Solid state lighting apparatuses and related methods
Solid state lighting apparatuses are adapted to operate with alternating current (ac) received directly from an ac power source. An exemplary apparatus includes a substrate and multiple sets of one or more solid state light emitters disposed over the substrate.
08/21/14
20140232279
Supplemental load circuit for low power traffic lamps
The present disclosure provides a supplemental load circuit configured to provide a supplemental power consumption to enable a lamp unit operating at a low power consumption to operate with a traffic controller configured to test for a higher power consumption. The supplemental load circuit includes a load, power input circuitry configured to receive a dc power signal from the lamp unit, and a control switch configured to receive a control signal having a duty cycle from the lamp unit.
08/21/14
20140232196
Power conditioning circuit to maximize power delivered by a non-linear generator
A circuit receives variable voltage and current from a renewable power source and optimally loads the source to maximize power delivered into a dc bus having constant voltage. A boost circuit and synchronous rectifier having a controlled duty cycle step up the voltage from the renewable source.
08/21/14
20140231683
Systems and methods for controlling multistage electronic controlled gas valves
Disclosed herein are exemplary embodiments of an electronic control unit for controlling an electronic controlled multistage gas valve (mgv) for adjusting gas flow to a gas fired appliance. In an exemplary embodiment, an electronic control unit generally includes an integrated furnace control (ifc) unit, a multistage gas valve control (mgvc) unit electronically coupled to the ifc unit, and a coil electronically coupled to the mgvc unit.
08/21/14
20140231643
Discontinuous atmospheric pressure interface
A method of interfacing atmospheric pressure ion sources, including electrospray and desorption electrospray ionization sources, to mass spectrometers, for example miniature mass spectrometers, in which the ionized sample is discontinuously introduced into the mass spectrometer. Discontinuous introduction improves the match between the pumping capacity of the instrument and the volume of atmospheric pressure gas that contains the ionized sample.
08/14/14
20140225955
Control of air-based media dryer
Examples are provided of controlling sheet media dryers. A controller operates a fan at plural duty cycles and correlates a resulting air pressure to each to define empirical data pairs.
08/14/14
20140225659
Thermal controller
A thermal controller for driving a gate control unit of a gate-driven semiconductor switching device, the thermal controller comprising a junction temperature estimation module for generating an estimated junction temperature for the switching device, a gate voltage control module for modifying a gate voltage of the switching device, a switching frequency control module for modifying a switching frequency of the switching device, and a duty cycle control module for modifying the duty cycle of the switching device. In use, the thermal controller is adapted to activate one of the gate voltage control module, switching frequency control module and duty cycle control module dependent upon the estimated junction temperature in order to maintain the actual junction temperature below a pre-determined limit..
08/14/14
20140225501
Adjusted pulse width modulated duty cycle of an independent filament drive for a gas discharge lamp ballast
An electronic dimming ballast for driving a gas discharge lamp may be operable to control the duty cycle of an independent filament drive (ifd) to avoid hard switching and operation of the switches of the ifd outside their safe operating area. Such a ballast may include a first inverter for generating a first high-frequency alternating current (ac) voltage for powering the gas discharge lamp, and a second inverter for generating a second high-frequency ac voltage for heating the filament, wherein the second inverter is driven independent of the first inverter.
08/14/14
20140223688
Battery-powered cordless cleaning system
A cleaning system comprising a rotor; an agitator; a rechargeable battery having a housing and at least two cells within the housing; a suction motor receiving power from the rechargeable battery, the suction motor coupled to the rotor; a brush motor receiving power from the rechargeable battery, the brush motor coupled to the agitator; a user-controlled switch configured to generate a user-activated signal in response to user manipulation; and a controller. The controller configured to output a first pulse-width modulated signal at a first duty cycle to control the suction motor, output a second pulse-width modulated signal at a second duty cycle to control the brush motor at a first speed, receive the user-activated signal, and upon receiving the user-activated signal, output the second pulse-width modulated signal at a third duty cycle to control the brush motor at a second speed..
08/07/14
20140222113
Systems and methods for enhancing or affecting neural stimulation efficiency and/or efficacy
Systems and methods for enhancing or affecting neural stimulation efficiency and/or efficacy are disclosed. In one embodiment, a system and/or method may apply electromagnetic stimulation to a patient's nervous system over a first time domain according to a first set of stimulation parameters, and over a second time domain according to a second set of stimulation parameters.
08/07/14
20140221029
Methods and apparatus for 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.
08/07/14
20140219663
Methods and arrangements for frequency shift communications
Embodiments relate to communicating data by varying a frequency of an amplitude modulated light source. Embodiments may comprise logic such as hardware and/or code to vary a frequency of an amplitude-modulated electromagnetic radiator such as a visible light source, an infrared light source, or an ultraviolet light source.
08/07/14
20140219401
Rfi mitigation via duty cycle control
Briefly, in accordance with one or more embodiments, a harmonic of a clock signal is determined that is expected to provide interference with an input of a radio-frequency (rf) receiver based at least in part on a frequency of the clock signal and one or more frequencies of operation of the rf receiver. A duty cycle of the clock signal at which the harmonic will be attenuated is calculated, and the duty cycle of the clock signal is set to the calculated value as a base duty cycle in order to mitigate rf interference (rfi) at the rf receiver due to the harmonic of the clock signal.
08/07/14
20140218742
Optical coherence tomography control systems and methods
In part, the invention relates to methods, devices, and systems suitable for controlling a light source. The light source is configured for use in a data collection system such as an optical coherence tomography system.
08/07/14
20140218088
Apparatus, system, and method for re-synthesizing a clock signal
Described herein are apparatus, method, and system for re-synthesizing a clock signal. The apparatus comprises: a first logic unit to detect a rising edge of an input clock signal and for generating a rising edge of an output clock signal based on the detected rising edge of the input clock signal, the input clock signal having a non-50% duty cycle and a first period; and a second logic unit to compute a falling edge of the output clock signal according to the detected rising edge of the input clock signal, the falling edge of the output clock signal being near half of the first period..
08/07/14
20140217999
Soft start circuits and techniques
A regulator control circuit includes a switch control signal generator to generate a switch control signal and a soft start circuit to generate a soft start signal for use by the switch control signal generator. The soft start circuit includes a soft start controller and a decreasing circuit to decrease the soft start signal in response to the soft start controller.
07/31/14
20140214144
Electrode configuration for an implantable electroacupuncture device
An implantable electroacupuncture device (iead) treats a disease or medical condition of a patient through application of stimulation pulses applied at a specified acupoint or other target tissue location at a very low duty cycle. In a preferred implementation, the iead is an implantable, coin-sized, self-contained, leadless device having at least two electrodes attached to an outside surface of its housing, with at least one electrode on the top or bottom surface of the housing functioning as a cathode, and at least one electrode on the perimeter edge of the housing functioning as an anode.
07/31/14
20140214133
Radial feed through packaging for an implantable electroacupuncture device
An implantable electroacupuncture device (iead) treats a disease or medical condition of a patient through application of stimulation pulses applied at a specified acupoint or other target tissue location. In a preferred implementation, the iead is an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214128
Circuits and methods for using a high impedance, thin, coin-cell type battery in an implantable electroacupuncture device
An implantable electroacupuncture device (iead) treats a disease or medical condition of a patient through application of stimulation pulses applied at a specified acupoint or other target tissue location. In a preferred implementation, the iead is an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214127
Implantable electroacupuncture device and method for treating dyslipidemia
An implantable electroacupuncture device (iead) treats dyslipidemia conditions of a patient through application of stimulation pulses applied at acupoint st40, or its underlying nerves saphenous and peroneal. The iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214126
Implantable electroacupuncture device and method for treating obesity
An implantable electroacupuncture device (iead) treats obese conditions of a patient through application of stimulation pulses applied at acupoints sp4, lr8 or st40, or their underlying nerves saphenous and peroneal. The iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214125
Implantable electroacupuncture system and method for treating dyslipidemia and obesity
An implantable electroacupuncture system (ieas) treats dyslipidemia or obesity through application of stimulation pulses applied at at least one of acupoints st36, sp4, st37, st40, sp6, sp9, k16, or lr8, or underlying nerves saphenous or peroneal. The ieas includes an hermetically-sealed implantable electroacupuncture (ea) device having at least two electrodes located outside of its housing.
07/31/14
20140214124
Implantable electroacupuncture system and method for treating cardiovascular disease
An implantable electroacupuncture device (iead) treats cardiovascular disease through application of stimulation pulses applied at at least one of acupoints ex-hn1, bl14, ht7, ht5, pc6, st36, li11, lu7 and lu2. The iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214119
Implantable electroacupuncture system and method for treating parkinson's disease and essential tremor
An implantable electroacupuncture device (iead) treats parkinson's disease or essential tremor through application of stimulation pulses applied at at least one of acupoints gb34 and gv20. The iead includes an hermetically-sealed implantable electroacupuncture (ea) device having at least two electrodes located outside of its housing.
07/31/14
20140214118
Implantable electroacupuncture system and method for treating depression and similar mental conditions
An implantable electroacupuncture device (iead) treats mental illness through application of stimulation pulses applied at a specified tissue location, including at least one of acupoints gv20 and exhn3, or their underlying nerves. In one embodiment, the iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214117
Implantable electroacupuncture device and method for treating depression, bipolar disorder and anxiety
An implantable electroacupuncture device (iead) treats depression, bipolar disorder or anxiety through application of stimulation pulses applied at acupoints gv20 and/or exhn3. The iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214116
Stimulation paradigm to improve blood pressure dipping in an implantable electroacupuncture device
A coin-sized implantable electroacupuncture (ea) device defines a stimulation paradigm, or stimulation regimen, that controls when ea stimulation pulses are applied to a selected acupoint, or other specified tissue location, to treat hypertension or nondipping. The stimulation regimen is applied when the patient is sleeping in order to minimize or mitigate the occurrence of nondipping or reverse dipping of the patient's blood pressure.
07/31/14
20140214115
Implantable electroacupuncture system and method for reducing hypertension
An implantable electroacupuncture device (iead) treats hypertension through application of stimulation pulses applied at at least one of acupoints pc5, pc6, li4, st36, st37, li11, lr3, and gb34. The iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214114
Implantable electroacupuncture device and method for reducing hypertension
An implantable electroacupuncture device (iead) treats hypertension through application of stimulation pulses applied at at least one of acupoints pc5, pc6, st36, or st37. The iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214113
Implantable electroacupuncture device
An implantable electroacupuncture device (iead) treats a medical condition of a patient through application of electroacupuncture (ea) stimulation pulses applied at a target tissue location, such as an acupoint. The iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214112
Implantable electroacupuncture device and method for treating erectile dysfunction
An implantable electroacupuncture device (iead) treats an erectile dysfunction condition of a patient through application of stimulation pulses applied at a target tissue location underlying, or in the vicinity of, at least one of acupoints bl52, bl23 or gv4. The iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140214111
Implantable electroacupuncture device and method for treating cardiovascular disease
An implantable electroacupuncture device (iead) treats heart failure, coronary artery disease, myocardial ischemia or angina through application of stimulation pulses applied at acupoints gv20 and/or exhn3. The iead comprises an implantable, coin-sized, self-contained, leadless electroacupuncture device having at least two electrodes attached to an outside surface of its housing.
07/31/14
20140210374
Lighting system and method for pwm duty cycle control
A lighting system and method are provided for controlling a pwm duty cycle. The lighting system is provided with at least one device that is configured to emit light in response to receiving electrical power.
07/31/14
20140210371
Digitally controlled electronic ballast with anti-striation control and method of operation thereof
An apparatus to supply power to at least one gas lamp, the apparatus including a half bridge driver having a striation control circuit which determines an on time (ton) for a cycle in accordance with a fifty percent duty cycle, the cycle having a plurality of segments and lasting for a predetermined period of time and modulates on times ton1 and ton2 of first and second power switches, respectively, of a half-bridge circuit in accordance with a striation control technique for each of the plurality of segments.. .
07/31/14
20140210359
Method and apparatus to control a dc-dc converter
Control circuits and techniques are provided for use with dc-dc converters. The circuits and techniques may, in some implementations, be used with led driver systems.
07/24/14
20140204837
Methods and arrangements for channel access in wireless networks
Some embodiments provide a normal rate preamble detector to detect a signal transmitted in accordance with a first set of modulation and coding schemes and a low rate preamble detector to detect a signal transmitted in accordance with a second set of modulation and coding schemes. Embodiments may comprise channel traffic logic to determine a traffic indicator indicative of traffic on a communications channel.
07/24/14
20140203871
Zero-voltage-switching contour based outphasing power amplifier
A zero-voltage-switching contour based outphasing power amplifier having two class-e power amplifiers connected in an out-phasing architecture coupled on opposite sides of a load being driven. The pair of class-e power amplifiers receive separate digital drive signals with an amount of phase difference that is adjusted based on the load.
07/24/14
20140203851
Digital clock placement engine apparatus and method with duty cycle correction and quadrature placement
A digital clock placement engine has circuitry that adjusts a duty cycle of a clock signal and adjusts the locations of the rising/falling edges of the clock signal for purposes of data sampling or other operations. In a forwarded-clock interface implementation, a clock signal is received along with a data signal, and the received clock signal may be distorted to due various factors.
07/24/14
20140203777
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.. .
07/24/14
20140203769
Method of multi-coil operation and optimization
This disclosure provides systems, methods and apparatus for wireless power transfer and particularly wireless power transfer to remote systems such as electric vehicles. In one aspect, a system comprises substantially co-planar first and second receiver coils.
07/24/14
20140203743
Drive apparatus and drive method for brushless motor
The present invention relates to a drive apparatus that drives a brushless motor with a square wave, and relates to a drive method thereof. The drive apparatus limits a duty cycle of once in n times of pulse width modulation periods so that the duty cycle does not fall below a set value, and increases the n value according to a rotation speed of the brushless motor, and then obtains position information in a period in which the duty cycle is limited to the predetermined duty cycle.
07/24/14
20140203712
Occupancy sensor for controlling an led light
An occupancy sensor for an led module has an occupancy sensing module, a main control module and a current control module. The occupancy sensing module has capability of sensing occupancy status of a specific area.


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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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