Karl Easthom

US Patent 7088075 Battery pack

US Patent 7088598 Power-mode control circuitry for power converters

US Patent 7091693 Battery with non-volatile memory for LMR portable radio applications

US Patent 7091694 Revolving battery reservoir system

US Patent 7091697 System and method for efficiently implementing a battery controller for an electronic device

US Patent 7091710 Low dropout voltage regulator providing adaptive compensation

US Patent 7095211 Battery gas gauge

US Patent 7095213 Multifunctional complex power supply device

US Patent 7098627 Method and apparatus for battery charging with constant current, constant voltage, and pulsed charging

US Patent 7102335 Rail—rail current sense amplifier

US Patent 7109686 System and method for precharging and discharging a high power ultracapacitor pack

US Patent 7116109 Apparatus and method for simulating a battery tester with a fixed resistance load

US Patent 7119516 Cordless power tool with tool identification circuitry

US Patent 7119518 Battery tester

US Patent 7126311 Battery box for recreational vehicle

US Patent 7126314 Non-synchronous boost converter including switched schottky diode for true disconnect

US Patent 7126315 DC/DC Converter with input and output current sensing and over current protection capable of interrupting the input power supply

US Patent 7126833 Auxiliary quasi-resonant dc tank electrical power converter

US Patent 7129674 Power supply apparatus having control section for controlling quantity of fuel to be supplied to fuel cell

US Patent 7129675 System and method for battery charging

US Patent 7129679 Power supply circuit having soft start

US Patent 7133298 High frequency voltage regulating transformer based converter

US Patent 7141956 Digital output voltage regulation circuit having first control loop for high speed and second control loop for high accuracy

US Patent 7142401 Detecting overcurrents in a switching regulator using a voltage dependent reference

US Patent 7148655 Electronic equipment, display control method, recording medium and program

US Patent 7148658 Photoflash capacitor charger and method thereof

US Patent 7149068 Circuit for controlling the minimum operating voltage of switching power supply

US Patent 7151356 Retractable cord power adapter and battery pack

US Patent 7151357 Pulse frequency modulation for induction charge device

US Patent 7151679 Adaptive leading edge blanking circuit

US Patent 7157880 Battery monitoring system

US Patent 7157881 Safety device for managing batteries

US Patent 7157884 Method and circuit for energizing and de-energizing an electric energy storage device

US Patent 7161335 Adaptive bus voltage positioning for two-stage voltage regulators

US Patent 7161817 Current/charge-voltage converter and reset method

US Patent 7164256 Method and device for determining available electric power in an instrument panel

US Patent 7164272 Modular unit connectable to the battery of a vehicle for monitoring its condition and protecting the electrical system of said vehicle

US Patent 7166987 Portable charger for mobile phone

US Patent 7166990 Battery low-voltage protecting device

US Patent 7170259 Universal serial bus charger for a mobile device

US Patent 7170265 Voltage regulator circuit with two or more output ports

US Patent 7173397 Battery system, battery monitoring method and apparatus

US Patent 7173834 Half-controlled silicon-controlled rectifying system and method thereof

US Patent 7176656 Tool with battery pack

US Patent 7176669 Switching regulator with frequency modulation to vary frequency based on a load condition, and control method therefor

US Patent 7183744 Battery housing structure for portable devices

US Patent 7183746 Cart charge system

US Patent 7183748 Electric charger and power supply device for portable terminal

US Patent 7187156 Battery charger

US Patent 7190148 Overcharge/overdischarge detection apparatus, overcharge/overdischarge detection circuit, and semiconductor apparatus

US Patent 7193390 Apparatus for connecting secondary battery cells in series and method for controlling secondary battery cells connected in series

US Patent 7193421 Method and device for determining the state of a vehicle battery

US Patent 7196495 Dual battery and monitor arrangement

US Patent 7199554 Desktop charger for bar-type portable wireless terminal

US Patent 7199556 Method for extending power duration for lithium ion batteries

US Patent 7199567 Voltage regulator output stage with low voltage MOS devices

US Patent 7205745 Portable power source system

US Patent 7205746 Battery cover assembly having integrated battery condition monitoring

US Patent 7205747 System and method for monitoring a charging period in a battery charger

US Patent 7208917 Serial charger with the function of automatic change of charging speed for NICD/NIH batteries

US Patent 7208931 Constant current generating circuit using resistor formed of metal thin film

US Patent 7211986 Inductive charging system

US Patent 7211987 Electric device with intelligent battery system therein

US Patent 7218079 Electrochemical energy store and method for determining the wear to an electrochemical energy store

US Patent 7221123 Battery container for an electric vehicle

US Patent 7227334 Charging apparatus used with a mobile robot

US Patent 7227336 Lithium ion rapid charging system and method

US Patent 7233505 High efficiency flyback converter with primary, secondary, and tertiary windings

US Patent 7235949 Battery capacity detection apparatus and detection method

US Patent 7235951 Charging apparatus

US Patent 7239112 Battery overcharging compensation system and method

US Patent 7248019 Cordless power tool

US Patent 7248020 Battery-voltage monitoring integrated-circuit and battery-voltage monitoring system

US Patent 7248023 Charger for lithium secondary battery and electronic apparatus including charger

US Patent 7250744 Quasi average current mode control scheme for switching power converter

US Patent 7253584 Isolated high voltage battery charger and integrated battery pack

US Patent 7253589 Dual-source CMOS battery charger

US Patent 7253631 Method of determining the impedance of an electrochemical system

US Patent 7254046 DC-DC converter

US Patent 7257010 Power supply circuit

US Patent 7259536 Solar powered mobile

US Patent 7259537 Polarity-reversal protection circuit for energy sources

US Patent 7262628 Digital calibration with lossless current sensing in a multiphase switched power converter

US Patent 7262978 Voltage conversion apparatus, voltage conversion method, and computer-readable recording medium with program recorded thereon to allow computer to execute voltage conversion control

US Patent 7263832 Method and arrangement for controlling an electrically operated charger

US Patent 7264760 Method for producing a battery pack and a battery pack produced therein

US Patent 7265517 Charger unit for an electronic device including a system for protective storage of an adapter plug

US Patent 7265518 Method of automatically cutting off power in case of low battery voltage in mobile electronic unit

US Patent 7268520 Sense amplifier for use with wake-up charging current

US Patent 7269036 Method and apparatus for adjusting wakeup time in electrical power converter systems and transformer isolation

US Patent 7271568 Battery charger for portable devices and related methods

US Patent 7272025 Method and apparatus to control either a regulated or an unregulated output of a switching power supply

US Patent 7274171 Charging circuit for secondary battery

US Patent 7275501 System and method using capacitors to power an automatic feeder system

US Patent 7276881 Protection method, control circuit, and battery unit

US Patent 7279867 Method for balancing cells or groups of cells in a battery pack

US Patent 7279874 Power supply device with dead-time control and printing apparatus having the same

US Patent 7280376 Primary side voltage sense for AC/DC power supplies capable of compensation for a voltage drop in the secondary

US Patent 7282892 Battery component replacement

US Patent 7282895 Active dropout optimization for current mode LDOs

US Patent 7282898 Integrated circuit capable of balanced polyphase power regulation using redundant feedback circuitry

US Patent 7288917 Transmitter for radio-controlled toy

US Patent 7289340 Switching power supply device

US Patent 7295014 Method for determination of characteristic variable which relates to the state of charge of a storage battery

US Patent 7301315 Power supplying method and apparatus including buffer circuit to control operation of output driver

US Patent 7304866 System and method for power converter switch control

US Patent 7304867 DC-DC converter of multi-output type

US Patent 7307402 Method of charging alkali metal polymer batteries

US Patent 7315095 Voltage regulating apparatus supplying a drive voltage to a plurality of loads

US Patent 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

US Patent 7315462 Stabilized power supply

US Patent 7317300 Automotive battery state monitor apparatus

US Patent 7317625 Parallel current mode control using a direct duty cycle algorithm with low computational requirements to perform power factor correction

US Patent 7323850 Current detection circuit and switching power supply using the same

US Patent 7327147 Device and method for determining characteristic variables for batteries

US Patent 7330017 Driver for a power converter and a method of driving a switch thereof

US Patent 7332879 Control method and device for a power-converting module that drives a light-emitting component

US Patent 7339347 Apparatus and method for reliably supplying electrical energy to an electrical system

US Patent 7391183 System for controlling charging of secondary battery

US Patent 7602147 Device, in particular a charger device