|
Match
|
Document |
Document Title |
|
|
7623316 |
Circuit and method for protecting emergency head-retract capacitor in a hard disk drive
A charging system includes a current source, a voltage pump, and a comparator that compares a charging level of a capacitor to each of a first threshold and a second threshold. A controller turns...
|
|
|
7622898 |
Charging or discharging apparatus for electrically charging or discharging a capacitor storage type power source adapted to store electric energy in electric double layer capacitors
A charging apparatus for electrically charging a capacitor storage type power source comprises a switching circuit for turning on/off the charge current, a current detection circuit for detecting...
|
|
|
7619394 |
Capacitor charger with a modulated current varying with an input voltage and method thereof
In a capacitor charger including a transformer having a primary winding connected with an input voltage and a secondary winding for transforming a primary current flowing through the primary...
|
|
|
7615971 |
Capacitor charging circuit, flash unit, and camera
The present invention provides a flash discharging circuit for simplifying the charging of electric power in a capacitor. When energy discharged from a transformer for storing and discharging...
|
|
|
7615970 |
Energy invest and profit recovery systems
A variable density actualizing means is provided for supporting one or both of temporarily condensed electric charge and intensified magnetic flux flow and for thereby generating electrical energy....
|
|
|
7612537 |
Galvanically isolated charge balance system
A galvanically isolated charge balance system for a multicell battery includes a balancing circuit associated with each cell; each balancing circuit including a flying capacitor; a variable...
|
|
|
7595675 |
Duty cycle measurement method and apparatus that operates in a calibration mode and a test mode
The disclosed methodology and apparatus measure the duty cycle of a reference clock signal that a clock circuit supplies to a duty cycle measurement (DCM) circuit. In one embodiment, the DCM...
|
|
|
7592782 |
Supercapacitor engine starting system with charge hysteresis
An internal combustion motor assembly, including an internal combustion motor, a starter and a battery. In addition, the motor assembly includes a capacitor assembly, a capacitor charging assembly...
|
|
|
7589504 |
Capacitor charging apparatus for a strobe device of an imaging device, semiconductor integrated circuit therefor, and capacitor charging-discharging system for a strobe device of an imaging device
In a capacitor charging apparatus, an on-time in which the primary circuit of a transformer is energized is continued until a primary current detection signal reaches a predetermined peak detection...
|
|
|
7573238 |
Voltage detection device and electric vehicle including voltage detection device
A voltage detection device for accurately correcting detection errors with voltage greater than an internal reference voltage. The device includes a first switch group of switches for obtaining the...
|
|
|
7573154 |
Battery operated portable electronic device having dual batteries
A battery-operated portable electronic device has a primary battery to provide energy to low current circuitry of the portable device, and a supplemental battery to provide intermittent bursts of...
|
|
|
7567063 |
System and method for minimizing power consumption of a reference voltage circuit
A system and method is disclosed for minimizing power consumption in a reference voltage circuit. A capacitor is coupled to a reference voltage circuit and charged to a voltage that equals the...
|
|
|
7561058 |
Warning system and method for electrical devices
An externally powered temperature calibration device includes a system that provides a warning of high temperatures within the device after the device has been disconnected from the external power....
|
|
|
7560905 |
Vehicle steering wheel power switch apparatus and method
A method and system for powering at least one switch provided on the steering wheel assembly of an off road vehicle. The method or system includes providing a rechargeable accumulator in the...
|
|
|
7560904 |
Method and system of managing power distribution in switch based circuits
Method and systems of managing power distribution in switch based circuits. The method and system including a number of switches for controlling power distribution. The method and system further...
|
|
|
7560903 |
Apparatus and method for discharging electrical energy storage cells
A power module includes double layer capacitors, a voltage booster, a charging circuit, and a switching assembly. In discharging mode, the switching assembly connects the voltage booster to the...
|
|
|
7557543 |
Method and system for discharging a capacitive element
An electric drive system having a power source which provides power to an electric motor through an electric motor control. Discharging of stored capacitor energy of a capacitor coupled between the...
|
|
|
7557523 |
Discharge lamp lighting device, and lighting equipment and lighting system using the device
A level shift IC ( 3 b ) of a power supply/shutoff section ( 3 ) is operable, when a shutoff signal (Sa) is input from a timer circuit ( 8 ) for a time T during an ON state of a discharge lamp ( 7...
|
|
|
7541782 |
System and method for extracting energy from an ultracapacitor
An extraction system detects a voltage stored in a capacitor and then extracts energy from the capacitor when the voltage falls below a predetermined value. The capacitor may be an ultracapacitor...
|
|
|
7529068 |
Protective circuit for a frequency converter
The voltage of the intermediate circuit of a frequency converter is monitored, while the intermediate circuit is charged via charging resistors. When the voltage has not reached at least a...
|
|
|
7521900 |
Method and assembly for insulating polarized device
Polarized electric charge storage devices economically provide high available capacitance. The present invention directly employs polarized electrical charge storage (PECS) devices such as...
|
|
|
7521899 |
Methods and apparatus for managing energy supplied by an energy supply
Methods, apparatus, media, signals and programs for managing energy supplied by an energy supply are disclosed. One such apparatus includes an energy accumulation device, which includes an energy...
|
|
|
7511974 |
High voltage charging circuit
A high voltage charging circuit is provided with the ability of rapid charging. The circuit is composed of a turn-on control circuit, a turn-off control circuit and a transistor. The turn-on...
|
|
|
7511452 |
Portable electronic device and capacitive charger providing data transfer and associated methods
The electronic apparatus includes a portable electronic device and a charger for capacitively charging the portable electronic device when the portable electronic device is temporarily placed...
|
|
|
7508165 |
Cell voltage equalization apparatus for combined battery pack including circuit driven by power supplied by the combined battery pack
In a combined battery pack of a plurality of battery cells, a comparison circuit compares a voltage appearing at a common connection point between two adjacent battery cells with a reference...
|
|
|
7495418 |
Semiconductor apparatus for charging capacitors
A semiconductor apparatus is disclosed, including: multiple parallel monitor circuits each configured to control charge to a capacitor by controlling a transistor that bypasses, if the voltage of...
|
|
|
7492130 |
Power processing unit and related method for regulating a voltage despite voltage fluctuations across an energy storage device
An apparatus including an energy storage device and a power processing unit that is coupled to the energy storage device. The energy storage device is configured to deliver electrical energy to a...
|
|
|
7486150 |
Electric circuit and oscillator comprising said electric circuit
An electric circuit includes a circuit path from a first reference voltage to a second reference voltage lower than the first reference voltage. The path includes a current generator, a capacitor,...
|
|
|
7482941 |
Physical key to facilitate an inactive mode for a state-of-charge indicator within a battery
The invention provides a system and battery including a state-of-charge indicator (SOCI) to monitor and display the amount of charge within the battery. The SOCI is capable of operating in a...
|
|
|
7482816 |
Voltage monitor and electrical storage device using the same
In a voltage monitor that measures voltages applied to the terminals of each of a plurality of capacitors constituting a storage section, the each voltage applied to a connecting point between...
|
|
|
7482786 |
Electric discharger using semiconductor switch
An electric discharger includes: an inductor, a first semiconductor switch, and a second semiconductor switch which are connected in series between opposite terminals of a DC power supply unit; and...
|
|
|
7482785 |
Transponder with oscillator peak voltage limit
A transponder device having an LC oscillator circuit, an energy storage capacitor and an integrated transponder circuit powered by energy from the storage capacitor. The device operates either in a...
|
|
|
7474879 |
Power supply
A power supply ( 1 ) for a load in the form of a PCMCIA card ( 2 ) has and onboard GPRS class (10) module (not shown). The module, and therefore card ( 2 ), demands a load current i load that has...
|
|
|
7471016 |
Low pass filter
The present disclosure provides a method for filtering in a cordless electrical device. The method may include coupling a filter network, a microcontroller and a plurality of battery cells having a...
|
|
|
7465834 |
Ionic liquids and process for manufacturing the same
Ionic liquids exhibit a stable liquid state even at low temperatures and have a good conductivity. The ionic liquids each contain an organic compound represented by the following formula (1) as a...
|
|
|
7459888 |
System and method for precharging and discharging a high power ultracapacitor pack
This invention is a system and a method that uses the braking resistor, commonly used and available in electrically or hybrid-electrically propelled vehicles, to limit the precharge current during...
|
|
|
7456615 |
Charging arrangement for capacitor means
A capacitor charging arrangement to be supplied by a voltage containing network cycles, and having a gate-controlled semiconductor switch (T ch ) arranged for charging the capacitor (C aux ) and...
|
|
|
7446506 |
Apparatus for preventing capacitor charger from overcharging and method thereof
The present invention provides an apparatus for controlling a capacitor charging circuit and a method thereof. The apparatus includes a first comparator, a second comparator, and a controller. The...
|
|
|
7443141 |
Capacitor charging circuit, flash unit, and camera
The present invention provides a flash discharging circuit for simplifying the charging of electric power in a capacitor. When energy discharged from a transformer for storing and discharging...
|
|
|
7439711 |
Energy storage device including a status indicator
An energy storage device for use with an electric vehicle includes an electrical energy storage device configured to be coupled to an electrical traction system of the electric vehicle to provide...
|
|
|
7436618 |
Circuit and method for protecting emergency head-retract capacitor in a hard disk drive
A protection circuit for a capacitor comprises a voltage pump that selectively charges the capacitor. A current source selectively charges the capacitor. A controller compares a charging voltage to...
|
|
|
7427851 |
Capacitor unit
A capacitor unit using a plurality of capacitors and which has a long lifetime and is maintenance-free is provided. The capacitor unit has a high reliability even in harsh using conditions of...
|
|
|
7425799 |
Current detecting circuit
The object of the present invention is to provide a current detecting circuit capable of detecting a current flowing to a switching device with high accuracy, with less power loss, with high...
|
|
|
7420352 |
Power supply system for a vehicle
Power supply system for a vehicle, in the case of which an onboard voltage supply system for supplying electric consuming devices can be fed by at least one power accumulator, and in which external...
|
|
|
7417408 |
Method and arrangement for charging capacitors of direct-voltage intermediate circuit of frequency converter
A method and an arrangement for charging capacitors of a direct-voltage intermediate circuit of a frequency converter. The arrangement comprises a charging circuit (CCA) comprising a first diode (D...
|
|
|
7417407 |
Circuit with a switch for charging a battery in a battery capacitor circuit
A circuit for charging a battery combined with a capacitor includes a power supply adapted to be connected to the capacitor, and the battery. The circuit includes an electronic switch connected to...
|
|
|
7417356 |
Power conversion circuitry
One form of the invention is directed to an apparatus that comprises step-down circuitry to better match impedance between an input and an output that includes a number of stages each electrically...
|
|
|
7411374 |
Circuitry and control method for charging capacitive loads
A capacitor charging circuit comprises, power transfer circuitry, power switching control circuitry and voltage measurement circuitry. The power transfer circuitry transfers power from a power...
|
|
|
7405540 |
Secondary power supply system and method of activating subsystems from a vehicle steering wheel
A method and system for powering at least one switch provided on the steering wheel assembly of a marine vehicle. A rechargeable accumulator is provided in the steering wheel assembly. The switch...
|
|
|
7400116 |
Pre-charging system for smoothing capacitor
When a control means turns on a pre-charging contactor, an AC current from an AC power source is converted into a DC current by a switching circuit to charge a smoothing capacitor. However, the...
|