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Patent # Description
US-8,129,958 Transition mode power factor correction device with built-in automatic total harmonic distortion reduction feature
A controller for reducing the harmonics contents in the AC-to-DC converter that is capable of minimizing THD due to crossover distortion. The controller can...
US-8,129,957 Alternator voltage regulator with maximum output limiting function
An alternator system includes a field circuit, a regulator that regulates a field circuit electrical flow through the field circuit, and an output current...
US-8,129,956 Method for measuring a temperature in an electronic device having a battery and a memory device
A temperature sensing device can be embedded in a memory circuit in order to sense the temperature of the memory circuit. One oscillator generates a temperature...
US-8,129,955 Reset mechanism for a battery pack
A battery pack may include a plurality of battery cells; a discharge switch in series with the battery cells, a temperature sensor configured to sense...
US-8,129,954 System and method for charging and pulsating batteries
A battery charging and pulsating system including a battery having a positive terminal and a negative terminal, a charger electrically connected to the positive...
US-8,129,953 Power management unit for a wireless device
A method and apparatus is disclosed to regulate an input voltage to provide a regulated output power. The regulated output power may include a smooth direct...
US-8,129,952 Battery systems and operational methods
This disclosure includes battery systems and operational methods. According to one aspect, a battery system includes conversion circuitry, a plurality of main...
US-8,129,951 Power charging assembly and method that includes a low voltage electrical device operable with pulse width...
A power charging assembly and methods are provided to provide a pre-charge low-current state, a steady-state, high-current charging state, and an unconnect...
US-8,129,950 Battery module, pack of modules
The application concerns a battery module, comprising cells, two external terminals, a message communication infrastructure, a module control unit comprising a...
US-8,129,949 Device and method for instantaneous load reduction configuration to prevent under voltage condition
A device may include a battery and a plurality of components receiving power from the battery. A voltage of the battery is maintained above a threshold voltage...
US-8,129,948 Protective circuits for secondary battery packs
This invention discloses a charging/discharging protective circuit for a secondary battery pack, having an over-charging/discharging voltage comparator, a...
US-8,129,947 Method and system for utilizing a memory control circuit for controlling data transfer to and from a memory system
Methods and systems are disclosed for utilizing a memory control circuit for controlling transfer of data to and from a memory system. A memory control circuit...
US-8,129,946 Method and system for regulating current discharge during battery discharge conditioning cycle
Methods and systems are disclosed for utilizing a memory control circuit for controlling transfer of data to and from a memory system. A memory control circuit...
US-8,129,945 System and method for balancing a state of charge of series connected cells
A system and method for charging an undercharged cell of a bank of series connected cells utilizes a charging circuit. The charging circuit includes an inductor...
US-8,129,944 Control device for a secondary battery and vehicle
A control device for a secondary battery includes an offset addition unit calculating an offset amount based on a plurality of voltage values sensed by a...
US-8,129,943 Induction charger for charging electronic device
An induction charger for charging an electronic device includes a carrying car, a transmission assembly, a permanent magnet, an alternating current power...
US-8,129,942 Contactless charging method for charging battery
A system, method and apparatus for contact-less charging of battery operated devices is presented. There is a host charger with a power converter and resonant...
US-8,129,941 Power supply with regulation of voltage boosting time
A multi-voltage power supply includes a transformer connecting to an AC power source to regulate voltage and deliver voltage-transformed electric power, a...
US-8,129,940 Vehicle control system for controlling charging and discharging control of a battery
A vehicle control system has a battery mounted to a vehicle, a vehicle alternator charging the battery, a battery current detection device detecting a...
US-8,129,939 Slate wireless keyboard charging and connection
An approach is provided that determines whether keyboard power connection points included in a wireless keyboard are connected to system power connection points...
US-8,129,938 Multi power supply system for a portable device
The present invention discloses a multi power supply system for a portable device, particularly a power supply system having a multi power input interface and a...
US-8,129,937 Driving device and energy management module
A driving device for driving a load and including a secondary cell, a fuel cell, and an energy management module. The energy management module is coupled to the...
US-8,129,936 Open-loop and/or closed-loop control system of a 3-phase power converter for the operation of an asynchronous...
An open-loop and/or closed-loop control device for operating an asynchronous machine which is fed by a 3-phase power converter. The open-loop and/or closed-loop...
US-8,129,935 Motor control device
A motor control device includes: a motor-current detection unit; a rotational-angular-speed calculation unit for calculating a rotational angular speed of a...
US-8,129,934 Motor driver supplying drive current while adjusting decay rate thereof
A motor driver that supplies a drive current to a stepping motor includes a decay rate controller configured to mix a first decay rate and a second decay rate...
US-8,129,933 Motor controlling method and apparatus thereof
A voltage detection section and current detection section detect a voltage and current supplied to a motor, and the detected voltage and current are supplied to...
US-8,129,932 Driving apparatus for three-phase AC synchronous motor
In a driving apparatus for a three-phase synchronous motor, in which a battery is connected between a neutral point of a stator coil and a negative-pole bus, a...
US-8,129,931 Motor control device, motor drive system, washing machine, air conditioner and method of changing magnetization...
A motor control device includes a magnetization control unit energizing a motor winding to change magnetic flux content of permanent magnet motor, a current...
US-8,129,930 Induction actuated container
A method of controlling an operation of an induction actuated container cover includes the steps of (a) normally retaining a cover panel of the container cover...
US-8,129,929 Control and power device for a rotating electrical machine
A control and power device for a rotating electrical machine comprising a management circuit and a power circuit including a number of power transistors and...
US-8,129,928 Power branching system and power branching method
Provided is a power branching system for driving a plurality of motors by use of a single servo driver, the power branching system capable of protecting each of...
US-8,129,927 Driving device and driving method of electric discharge lamp, light source device, and image display apparatus
A driving device of an electric discharge lamp includes: a discharge lamp lighting unit which supplies power to the electric discharge lamp while alternately...
US-8,129,926 Light source control device
A light source control device is provided. A switching seat includes a switching key and a sensing device. A switching circuit is disposed between an external...
US-8,129,925 Terminal device and computer-readable storage medium
A terminal apparatus and a computer-readable storage medium capable of achieving reduction of power consumption by appropriately controlling lighting of a...
US-8,129,924 Stochastic signal density modulation for optical transducer control
A controller for optical transducers uses stochastic signal density modulation to reduce electromagnetic interference.
US-8,129,923 Switching circuit adapted in LED circuit
A switching circuit adapted in an LED circuit and an LED circuit are provided. The switching circuit has a mode-selecting circuit, a comparator and a control...
US-8,129,922 Method for controlling a high-frequency transformer
A method for controlling a high-frequency transformer by which the acoustic transformer noises occurring during intermittent operation (burst operation) are...
US-8,129,921 Switchegear, system for controlling a lamp, and light control system for a building comprising at least one light
The invention introduces the concept of priorities into DALI technology. A switchgear (18) used to this end comprises two inputs (28, 22) to which a DALI bus...
US-8,129,920 Discharge lamp ballast and fixture with controlled preheating
Electrical characteristics associated with a filament resistance are detected to control a preheating amount so as to heat a filament into an optimum state for...
US-8,129,919 Discharge tube driving device
A discharge tube driving device which drives a plurality of discharge tubes includes a switching circuit which generates a driving pulse, and a driving...
US-8,129,918 Power supply, display device, and light source driving apparatus
A power supply is provided, which includes a DC-DC converter being supplied with an external DC input voltage and a first switching control signal and...
US-8,129,917 Light emitting device for AC operation
An AC light emitting device is disclosed. The AC light emitting device includes at least four substrates. Serial arrays each of which has a plurality of light...
US-8,129,916 Light emitting driver circuit with bypass and method
A light emitting driver circuit, system, and method are provided. The driver circuit system and method can be implemented in various ways. An embodiment...
US-8,129,915 Discharge lamp operating device, illumination device and liquid crystal display device
A series circuit comprising a diode and a resistance is connected in parallel to a filament, and a series circuit comprising a diode and a resistance is...
US-8,129,914 Operating circuit for light-emitting diodes
An operating circuit for at least one light-emitting diode (LED) incorporates a switched-mode regulator circuit to which a DC voltage is fed and which provides...
US-8,129,913 Closed electron drift thruster
In a closed electron drift thruster, a magnetic circuit for creating a magnetic field in a main annular channel comprises at least one axial magnetic core...
US-8,129,912 Electrode device and apparatus for generating plasma
Provided are an electrode device and an apparatus for generating plasma. The electrode device for generating plasma includes: a planar member disposed to face a...
US-8,129,911 Magnetron
A magnetron has an anode 3 surrounding a tubular hollow cathode 4 which contains a heater 9. The cathode is supported by radial arms at each end. At one end of...
US-8,129,910 Magnetically insulated cold-cathode electron gun
A system and method of magnetically insulating the cathode of a cold-cathode electron gun is achieved. A strong magnetic field is applied in the vicinity of the...
US-8,129,909 Protected trailer lighting converter
A trailer light converter that is configured to operate lights of a towed vehicle from signals supplied from lighting circuits of a towing vehicle includes at...
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