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Document Title |
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7612603 |
Switching frequency control of switched capacitor circuit using output voltage droop
A frequency control circuit including a controlled oscillator and an amplifier circuit is disclosed for providing a clock signal to a switched capacitor circuit which divides an input voltage to...
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7566994 |
Small-step, switchable capacitor
According to an example embodiment, an apparatus is provided that produces a small-step switchable capacitor, which can have steps that are smaller in value than the smallest capacitor used in the...
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7554789 |
Capacitor array management
A capacitor array comprising a plurality of unit capacitors, each having first and second electrode plates. The first electrode plates are commonly connected via first routings. The second...
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7528506 |
Circuit arrangement for startup current limitation for electronic modules connected to a module carrier
A circuit arrangement for the time-delayed startup of electronic modules ( 20 ) connected to a module carrier ( 1 ) comprises a comparator ( 28 ) provided with a reference voltage applied thereto...
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7511977 |
Charge-pump type switching power supply apparatus
A switching power supply apparatus generates a first output voltage with a reversed polarity of an input voltage and a second input voltage of double the input voltage with the reversed polarity,...
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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,...
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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...
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7468898 |
DC-DC converter with switchable capacitors
A step down DC-DC converter is reduced in the cost by reducing a number of capacitors included. The DC-DC converter is provided with switches that connect (n−1) capacitors in parallel with each...
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7430133 |
Apparatus and method for switch connected as a diode in a charge pump
A switched-capacitor type voltage regulator is provided. The regulator includes a flying capacitor and switches, including first and second transistors which operate as switches. The switches are...
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7414459 |
Architecture for implementing an integrated capacitance
An architecture for implementing an integrated capacity includes a capacitive block inserted between first and second voltage reference. The block is formed The block is formed from elementary...
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7402983 |
Method for use of charge-transfer apparatus
A method for controlling a switching power converter which includes a central capacitor exchanges charge between the capacitor and plural nodes of a first terminal, and then transfers the charge...
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7382634 |
Voltage multiplier with charge recovery
Capacitive voltage multiplier for generating voltage pulses, preferably up to 100 V, that are higher than the supply voltage for displays, non-volatile memories and corresponding units especially...
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7323928 |
High capacitance integrated circuits
An integrated circuit providing high equivalent capacitance ranging from a few tens of picofarads to a few nanofarads is presented. The integrated circuit includes active integrated circuit...
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7265459 |
High Q linear controlled variable capacitor
A voltage controlled variable capacitor, formed of a larger number of fixed capacitor segments and a corresponding number of switching elements, linearly switches on each switching element, one...
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7245519 |
Digitally programmable capacitor array
A programmable capacitor array does not require separate switching transistors because the capacitors themselves have a switchable capacitance, which capacitors are made in the manner of regular N...
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7230352 |
Compact power supply
The present invention discloses an electrical power supply for providing electrical power to a load, the power supply comprising a plurality of energy storage elements each having a different...
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7215041 |
Charging circuit for a frequency converter
A charging circuit for a frequency converter having a first feed line with a first constant current source therein and a second feed line with a second constant current source therein. An...
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7109812 |
Apparatus and method for presenting a linear capacitive output in response to a voltage input
An apparatus for presenting a substantially linear capacitive output at at least one output locus in response to a voltage input at an input locus, the voltage input varying over a voltage range,...
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7109686 |
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...
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7109607 |
System to vary capacitance based on a control signal
Some embodiments provide a plurality of capacitors coupled in parallel and a plurality of capacitor switches, each one of the capacitor switches coupled in series with a respective one of the...
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7064460 |
Method for balancing a three-point DC intermediate circuit, and an apparatus for carrying out the method
A method and apparatus for balancing a three point DC voltage intermediate circuit involves a converter circuit which influences an electrical power flow in a three point DC voltage intermediate...
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7049713 |
Pulsed current generator circuit with charge booster
A pulsed current generator circuit for providing current pulses to a device under test includes a current source for applying a current to the device under test and a controlled current shunt for...
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7049710 |
Power bus for distributed ride through capability
A monitoring system includes a power source, a power bus coupled to said power source, a plurality of power taps coupled to said power bus, each of said power taps having a ride-through capacitor...
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7031135 |
Capacitor with high thermal stability for shielded electrical lines
The capacitor of high thermal stability includes a high-voltage electrode (HT) extending in a longitudinal direction (AX), a cylindrical printed circuit (CI) coaxially surrounding said high-voltage...
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RE38918 |
System and method for power-efficient charging and discharging of a capacitive load from a single source
A system and method for efficiently charging and discharging a capacitive load from a single voltage source. The system includes a brat switch for selectively connecting the voltage source to the...
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6946962 |
Electronic article surveillance marker deactivator using inductive discharge
A method and apparatus to deactivate an EAS security tag are described.
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6883103 |
Data carrier for the adaptation of a consumption time interval to the power consumption of the data carrier
A data carrier that communicates confidential data is configured to mask process-dependent power consumption by using power stored in an internal capacitor. The capacitor is initially charged to...
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6882064 |
System to vary capacitance based on a control signal
Some embodiments provide a plurality of capacitors coupled in parallel, a plurality of capacitor switches, each one of the capacitor switches coupled in series with a respective one of the...
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6838787 |
Variable bandwidth correlated doubling sampling circuits for image sensors
An integrated circuit for sampling outputs representing a pixel value comprises two first variable capacitors each having a variable range of capacitance and each for receiving the voltage...
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6809433 |
Capacitor unit with electric double layer capacitors, control method and control apparatus for the same, and accumulator system for motor vehicles
A capacitor unit with plural double layer capacitors eliminating irregularity in a state of charge of the respective double layer capacitor in the capacitor unit. A capacitor unit, a capacitor unit...
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6791210 |
Cyclic regulation apparatus, system, and method
A power delivery apparatus, system may include a series-connected plurality of energy storage devices, a voltage sensor to sense a supply voltage across a load coupled to a selected one of the...
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6753623 |
Switched capacitor array circuits having universal rest state and method
A switched capacitor array circuit for use in a voltage regulator, including L, M and N banks of capacitor positions disposed intermediate an input node and a ground node, between the input and...
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6738273 |
Charge pump drive signal recovery circuit
At least upper order stages of a multi-stage charge pump contain respective drive signal recovery circuits, that enable the charge pump to operate over a larger voltage range and/or be driven by a...
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6737847 |
Capacitor charging method and charging apparatus
An energy accumulating capacitor such as an excimer laser is prevented from being overcharged by stored energy in a resonance inductance device. In a resonant capacitor charging circuit, when it is...
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6737764 |
Circuit arrangement for the power supply of protective devices for the passengers of a vehicle
In order that the circuit arrangement ensures a high availability of the protective functions of all necessary passenger protection devices, it includes multiple double-layer capacitors connected...
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6633155 |
Wireless mouse induction power supply
A wireless mouse induction power supply comprises a wireless mouse and a mouse pad. The wireless mouse is installed with a first induction coil which is connected to a first capacitor of a power...
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6631081 |
Capacitive high voltage generator
A capacitive high voltage generator having a first stage and a second stage respectively formed by a first basic block and a second basic block and a third basic block. Each basic block has a...
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6617830 |
Capacitor system for a vehicle
A capacitor system suitable for charging and discharging of a vehicle such as discharging due to starting of an engine, charging by an alternator, and recharging upon braking. The capacitor system...
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6614134 |
Power supplies for ECUs
A voltage supply circuit for an ECU, of the type which uses a capacitor to hold charge for use in maintaining the supply during temporary supply interruptions, wherein a charge pump is provided for...
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6608405 |
Method of obtaining the adjustable capacitor
The method of obtaining the adjustable capacitor permits transforming all types of capacitors (including Electrolytic, Vacuum, Gas, high-voltage capacitors) into adjustable capacitors without...
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6593672 |
MEMS-switched stepped variable capacitor and method of making same
The present invention relates to a stepped micro electromechanical structure (MEMS) capacitor that is actuated by a plurality of MEMS switches. The MEMS switches may be within the stepped capacitor...
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6563235 |
Switched capacitor array circuit for use in DC-DC converter and method
A capacitor array circuit having at least two capacitors, switching circuitry coupled to the capacitors and to input, output and common nodes and control circuitry. The control circuitry operates...
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6531792 |
DC-DC converter and storage apparatus
A DC-DC converter includes N capacitors having identical capacitances, initially coupled in series, and supplied with an external power supply voltage to be charged thereby, and an circuit for...
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6480137 |
Method of generating matched capacitor arrays
An algorithmic procedure automatically generates layout of matched capacitor arrays used in A/D converters, D/A converters and programmable gain amplifiers, among other types of devices, using...
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6479910 |
Method and circuits for changing the ratings of a three phase circuit by delta-star switching
A switching scheme that permits a thee phase capacitor bank to have two ratings depending on whether the circuit is connected in delta or star configuration The capacitor per phase consists of two...
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6458498 |
Charge containing element
A charge containing element including a conductive layer; a dielectric layer formed on the conductive layer wherein the dielectric layer is formed by the thermal decomposition of an organic...
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6456513 |
Voltage conversion circuit and control circuit therefor
A voltage conversion circuit has an improved power efficiency and a lower power consumption is described. The voltage conversion circuit includes a plurality of voltage conversion cells, each of...
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6424058 |
Testable on-chip capacity
The invention relates to a testable on-chip capacitor cell 10 including a decoupling capacitor (C i ) which can be disconnected from the power distribution network and discharged through a cell...
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6418040 |
Bi-directional architecture for a high-voltage cross-coupled charge pump
An apparatus comprising a circuit configured to generate an output voltage having a magnitude greater than a supply voltage, where the output voltage is (i) a positive high voltage when a first...
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6373152 |
Electrical energy storage device
An electricity storage device and a portable electric-powered tool. The device comprises at least a battery; at least a super capacitor, which has lower internal impedance, when fully charged, than...
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