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| Number | Title | Issue Date |
| 7391183 | System for controlling charging of secondary battery To provide a system for controlling the charging of a secondary battery (battery), which is capable of keeping an initial charging/discharging characteristic of the battery in consideration of a change in environmental temperature and deterioration of the battery wi... | 06/24/2008 |
| 7339347 | Apparatus and method for reliably supplying electrical energy to an electrical system The instant invention is directed to a multiple battery system and auxiliary battery attachment system. The invention provides a battery housing having a common positive terminal and a common negative terminal coupled to an electrical system. A main battery having a... | 03/04/2008 |
| 7332879 | Control method and device for a power-converting module that drives a light-emitting component A control device, which controls a power-converting module that is coupled to a light-emitting component, includes a duration detecting unit and a control signal generator. The duration detecting unit compares the duration of a predetermined logic state of a pulsati... | 02/19/2008 |
| 7330017 | Driver for a power converter and a method of driving a switch thereof A driver for a power converter, method of driving a switch thereof, and a power converter employing the same. In one embodiment, the driver includes switching circuitry referenced to a voltage level and configured to provide a drive signal for a switch referenced to... | 02/12/2008 |
| 7327147 | Device and method for determining characteristic variables for batteries A method for determining characteristic variables for electrical states of an energy storage battery includes subdividing an electrolyte volume of the battery into at least two electrolyte volume components with associated electrolyte balancing areasabd defining at ... | 02/05/2008 |
| 7323850 | Current detection circuit and switching power supply using the same A current detection circuit of the present invention has a switching device 1; an auxiliary switching device 2; an offset voltage source comprising an offset resistor device 7 and a current source circuit 8; a compensation circuit, compri... | 01/29/2008 |
| 7317300 | Automotive battery state monitor apparatus A voltage control apparatus checks a battery voltage when an automotive generator gradually increases its output to be within a predetermined range after temporarily stopping the generator. Then, the battery voltage is picked up to calculate the charge rate. Further... | 01/08/2008 |
| 7317625 | Parallel current mode control using a direct duty cycle algorithm with low computational requirements to perform power factor correction A method and apparatus to implement parallel current mode control that is suitable for digital and analog implementation. A duty cycle algorithm is composed of a voltage term and a parallel current term which depends on the inductor current change between the induct... | 01/08/2008 |
| 7315153 | Switching power supply in an integrated circuit having a comparator with two threshold values, a synchronization input and output, voltage feedback and efficient current sensing A switching power supply circuit in which a series circuit comprising a resistive element and a capacitive element is provided in a parallel configuration with an inductor which supplies a load current to a load circuit, a voltage comparator having first and second ... | 01/01/2008 |
| 7315462 | Stabilized power supply A stabilized power supply for X-ray tubes having a first rectifier circuit, an inverter circuit comprising main switches, a transformer, a second rectifier circuit an oscillation circuit and an inverter circuit. The power supply includes an auxiliary circuit that ca... | 01/01/2008 |
| 7315095 | Voltage regulating apparatus supplying a drive voltage to a plurality of loads In a soft start period after power-on, a voltage regulating apparatus checks LED by LED to determine whether the LED is mounted on a position to receive a drive voltage. After the soft start period, the voltage regulating apparatus monitors the driving status of eac... | 01/01/2008 |
| 7307402 | Method of charging alkali metal polymer batteries A method of charging an electrochemical generator having a plurality of electrochemical cells. The method includes the step of charging the plurality of electrochemical cells such that the total voltage of the generator reaches a predetermined voltage level, followe... | 12/11/2007 |
| 7304867 | DC-DC converter of multi-output type A DC-DC converter of multi-output type is provided wherein a primary winding 5a is wound around core halves 5g, 5h of a transformer 5 between first and second secondary windings 5b, 5c of t... | 12/04/2007 |
| 7304866 | System and method for power converter switch control A power converter includes a transformer having a primary winding and a secondary winding, and a plurality of switches coupled to the primary and secondary winding, the plurality of switches responsive to at least one control signal to short both the primary and sec... | 12/04/2007 |
| 7301315 | Power supplying method and apparatus including buffer circuit to control operation of output driver A power supply circuit includes an output driver transistor, a reference voltage generator circuit, an output voltage detector circuit, an amplifier circuit, and a buffer circuit. The output driver transistor outputs a current in accordance with a first control sign... | 11/27/2007 |
| 7295014 | Method for determination of characteristic variable which relates to the state of charge of a storage battery A method for determining a state of charge (SOC) characteristic variable for a storage battery including determining a first SOC value and a second SOC value. The method further including determining changes in the first and second SOC values. These changes in the f... | 11/13/2007 |
| 7289340 | Switching power supply device A novel switching power supply device no more in need of a stand-by signal for turning on/off a switching element is provided. The switching power supply device is configured as having a main switching element Q1, wherein the switching power supply circuit is connec... | 10/30/2007 |
| 7288917 | Transmitter for radio-controlled toy A mobile toy is described. The mobile toy includes a wheel assembly having a hubcap for removably engaging a wheel of the wheel assembly. The mobile toy may also include a transmitter having a charging pad for charging of a radio-controlled embodiment of the toy. Th... | 10/30/2007 |
| 7282895 | Active dropout optimization for current mode LDOs A DC/DC converter has a linear voltage regulator for reducing or eliminating the output ripple of the converter with a minimum loss of efficiency. The converter comprises a converter stage with a supply voltage input, a converted voltage output and a control input, ... | 10/16/2007 |
| 7282892 | Battery component replacement A battery component replacement circuit for use in a model railroad application is disclosed. The circuit according to an embodiment of the invention has a series of capacitors connected between positive and negative terminals which supply power for charging the cap... | 10/16/2007 |
| 7282898 | Integrated circuit capable of balanced polyphase power regulation using redundant feedback circuitry A method according to one embodiment may include providing a redundant feedback circuit. The method of this embodiment may also include coupling the redundant feedback circuit to a feedback control loop and decoupling a feedback circuit from the feedback control loo... | 10/16/2007 |
| 7279874 | Power supply device with dead-time control and printing apparatus having the same In a power supply device including a PWM-controlled DC/DC converter which changes an output voltage on the basis of a setting signal, and a control unit, the DC/DC converter includes a circuit for changing a dead-time control voltage in accordance with a control sig... | 10/09/2007 |
| 7279867 | Method for balancing cells or groups of cells in a battery pack A method for balancing cells or groups of cells connected in parallel and in series for a battery pack by providing a continuously balanced state of charge while in a discharge phase, a charge phase, a quiescent phase, a storage phase, or combinations of these phase... | 10/09/2007 |
| 7280376 | Primary side voltage sense for AC/DC power supplies capable of compensation for a voltage drop in the secondary In a method and system for providing isolated power, a flyback controller includes a transformer operable to receive a primary voltage input and generate a secondary voltage output. A switch electrically coupled in series with a primary side of the transformer recei... | 10/09/2007 |
| 7276881 | Protection method, control circuit, and battery unit A protection method for preventing battery cells from over-discharging and being overcharged, a control circuit, and a battery unit are provided. In the protection method, when a set signal “1” is supplied to a set terminal, a flip-flop outputs “1”. The gate... | 10/02/2007 |
| 7275501 | System and method using capacitors to power an automatic feeder system A method and apparatus relates to systems powered by energy stored in capacitors. The capacitors may be charged using any desired power source. The system does not require batteries, which increases the reliability and life span of the system. In one example, an aut... | 10/02/2007 |
| 7274171 | Charging circuit for secondary battery A charging circuit for a secondary battery includes a constant-voltage circuit part outputting one of a plurality of predetermined constant voltages and charges the secondary battery by applying the constant voltage thereto, a detection circuit part detecting a batt... | 09/25/2007 |
| 7272025 | Method and apparatus to control either a regulated or an unregulated output of a switching power supply Techniques are disclosed to control output power from a switching power supply. For example, a switching regulator according to aspects of the present invention includes a switch to be coupled to an energy transfer element of a power supply. A controller is coupled ... | 09/18/2007 |
| 7271568 | Battery charger for portable devices and related methods A battery charger may include a charger connector to be coupled to a corresponding device connector of a portable device including a rechargeable battery. The battery charger may also include a charging circuit connected to the charger connector, and a controller co... | 09/18/2007 |
| 7269036 | Method and apparatus for adjusting wakeup time in electrical power converter systems and transformer isolation An electrical power converter system adjusts a wakeup voltage periodically, to permit earlier connection and/or operation, to increase performance. The electrical power converter system selects between a mathematically adjusted wakeup voltage based on at least one p... | 09/11/2007 |
| 7268520 | Sense amplifier for use with wake-up charging current A sense amplifier adapted to amplify a voltage signal representative of a charging current provided to a rechargeable battery. The sense amplifier may include a p-type input sense amplifier and an n-type input sense amplifier, The p-type input sense amplifier may be... | 09/11/2007 |
| 7265517 | Charger unit for an electronic device including a system for protective storage of an adapter plug A charger unit for an electronic device that includes a housing, a plurality of charging contacts provided on the housing, and a recess provided in the housing, preferably on a rear face thereof. A plug having a plurality of prongs may be selectively attached to and... | 09/04/2007 |
| 7263832 | Method and arrangement for controlling an electrically operated charger The invention is directed to a method and an arrangement (10) for controlling an electrically operated charger (1), which essentially prevent a sudden drop in voltage with the run-up of the electric charger. A drive signal (AS) is formed, which drives ... | 09/04/2007 |
| 7265518 | Method of automatically cutting off power in case of low battery voltage in mobile electronic unit A method for automatically cutting off power in case of a low battery voltage in a mobile electronic unit is provided. The method comprises (a) cutting off the power of the mobile electronic unit when a battery voltage is detected in a first check section during a b... | 09/04/2007 |
| 7264760 | Method for producing a battery pack and a battery pack produced therein Tips of the lug portions of a board touch the bottom of the opening between projecting portions and step portions, when the upper mold and the lower mold are fit together with a battery and board inserted. Thus the board is retained in position in the molds certainl... | 09/04/2007 |
| 7262628 | Digital calibration with lossless current sensing in a multiphase switched power converter Disclosed is a multi-phase power regulator that accurately senses current at a load in a lossless manner and adjusts the power supplied to the load based on the sensed current. Also disclosed is a method of calibrating a multiphase voltage regulator by applying a kn... | 08/28/2007 |
| 7262978 | Voltage conversion apparatus, voltage conversion method, and computer-readable recording medium with program recorded thereon to allow computer to execute voltage conversion control A control device receives an output voltage of a voltage-up converter from a voltage sensor, and calculates a feedback preliminary voltage control value determined by the difference between a voltage control value and the output voltage. The control device corrects ... | 08/28/2007 |
| 7259537 | Polarity-reversal protection circuit for energy sources A polarity-reversal protector for power sources, in particular for automobile batteries, which is connected between a power source and at least one consumer and/or at least one generator, is described. The polarity-reversal protector is to prevent the reverse polari... | 08/21/2007 |
| 7259536 | Solar powered mobile A solar powered mobile, comprising a drive housing fitting within a case, a solar cell panel fitted within the top of the drive housing, a clear cover over the solar cell panel, a removable DC motor with speed control driven by the solar cell panel, gears connecting... | 08/21/2007 |
| 7257010 | Power supply circuit A power supply circuit comprises a bridge circuit that has four rectifier elements connected and produces a rectified voltage between a positive side output terminal and a negative side output terminal of the power supply circuit, two of the four rectifier elements ... | 08/14/2007 |
