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Electrical transmission or interconnection systems

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Class / Patent application numberDescriptionNumber of patent applications / Date published
307043000 PLURAL SUPPLY CIRCUITS OR SOURCES 1657
307011000 PLURAL LOAD CIRCUIT SYSTEMS 991
307104000 ELECTROMAGNET OR HIGHLY INDUCTIVE SYSTEMS 871
307900100 VEHICLE MOUNTED SYSTEMS 818
307112000 SWITCHING SYSTEMS 544
307149000 MISCELLANEOUS SYSTEMS 146
307001000 SUPERIMPOSED UNLIKE CURRENTS 70
307326000 PERSONNEL SAFETY OR LIMIT CONTROL FEATURES 66
307109000 CAPACITOR 64
307106000 WAVE FORM OR WAVE SHAPE DETERMINATIVE OR PULSE-PRODUCING SYSTEMS 49
307105000 WITH HARMONIC FILTER OR NEUTRALIZER 28
307147000 CONDUCTOR ARRANGEMENTS OR STRUCTURE 21
307098000 COMBINED IMPEDANCE AND SWITCH SYSTEMS 15
307145000 WITH CURRENT COLLECTION OR TRANSFER 12
307089000 ANTI-INDUCTION OR COUPLING TO OTHER SYSTEMS 8
307400000 ELECTRETS 7
307102000 STABILIZED, ANTI-HUNTING OR ANTIOSCILLATION SYSTEMS 7
307401000 NONLINEAR REACTOR SYSTEMS (E.G., SATURABLE) 4
20080246345Semiconductor Switch Arrangement and an Electronic Device - A semiconductor switch arrangement (10-09-2008
20090001821Chip Attack Protection - A system for protecting a chip with an integrated circuit disposed on a first surface, the system including, disposed on the first surface, a first antenna, signal analyzer, chip controller and a signal generator which is operative to supply an outbound signal for transmission by the first antenna, a circuit arrangement, disposed on a second surface of the chip, including a shielding arrangement and a second antenna to receive the outbound signal, the circuit arrangement being operative to transmit a return signal from the second antenna to the first antenna, such that a breach in the shielding arrangement results in a change in, or cessation of, the return signal for detection by the signal analyzer, and a chip controller disposed on the first surface being operative to perform an action on the integrated circuit in response to the detection of the breach. Related apparatus and methods also included.01-01-2009
20110050004POWER TRANSMISSION SYSTEM - The invention relates to a power transmission system for transmitting electrical power from a power source to a load. The system comprises a capacitive and lossy transmission line or cable and a transformer device (03-03-2011
20110089770SELF POWER-ACQUIRING QUICK-RESPONSIVE CONTROLLABLE REACTOR - This invention relates to a self power-acquiring quickly responsive controllable reactor whose coil of the main body portion contains a control winding (04-21-2011
307103000 WITH LINE DROP COMPENSATION 4
20100181840CABLE COMPENSATION - This invention generally relates to cable compensation, and is particularly applicable to cable compensation for an AC-DC voltage converter. In one embodiment, a cable compensation apparatus for compensating voltage drop of a cable connected between an electrical power supply and an electrical device comprises: a first capacitor; a timer circuit to time a predetermined time period; a current source to supply to said first capacitor during substantially said predetermined time period a first current substantially proportional to an output current outputted by the power supply to the cable; and a control circuit to adjust an output voltage outputted by said power supply to said cable dependent on a voltage on said first capacitor. The compensation in some embodiments is programmable by means of a discrete capacitor component.07-22-2010
20090115254Systems and Methods for Voltage SAG Compensation - A voltage sag compensation system includes a capacitor charging and discharging module connected to an AC rectifier and to an inverter, a two stage voltage detector configured to detect a degree of voltage sag that is present on a power line, and an inverter gating module selectively connectable to the power line in response to the two stage voltage detector and configured to provide gating signals to the inverter. The system further includes a low DC bus switch out module configured to monitor an output voltage of the capacitor charging and discharging module and to disable the inverter gating module from providing the gating signals to the inverter when voltage associated with the capacitor charging and discharging module falls below a predetermined value.05-07-2009
20090134709System and method for cable resistance cancellation - A method for cable resistance cancellation. A single remote sense line and a simple cable resistance cancellation network are leveraged in a power supply unit to compensate for the total cable voltage drop, while maintaining tight output accuracy. By completely compensating for the voltage drops, the wire gauge for the main power wires can be reduced, thereby allowing the use of smaller diameter cables.05-28-2009
20100007213ACCUMULATOR - DC blocking capacitor and resistor are coupled in series with electricity storing section at its both ends, and ON/OFF circuit is coupled in parallel with resistor. Peak voltage holding circuit is coupled in parallel with ON/OFF circuit, and current sensing section is coupled in series with storing section, and an output from current sensing section is supplied to peak current holding circuit. In the structure of the storage device discussed above, a flowing direction of an electric current from a positive electrode to a negative electrode of storing section is referred to as a positive direction. ON/OFF circuit is controlled such that circuit is turned on when the current flows in a negative direction, and such that it is turned off when the current flows in the positive direction. An internal resistor of storing section can be found based on a peak voltage resulting from the control and held by circuit and a peak current resulting from the control and held by circuit. A degree of degradation of electricity storing section is determined with this internal resistor.01-14-2010
307100000 SHUNTING OR SHORT CIRCUITING SYSTEMS 3
20100102638SYSTEMS AND METHODS FOR DISCHARGING BUS VOLTAGE USING SEMICONDUCTOR DEVICES - Systems and methods are provided for discharging a high-voltage bus using semiconductor devices. A discharge system for a first voltage rail and a second voltage rail comprises a first semiconductor device coupled to a first voltage rail and a second semiconductor device coupled between the first semiconductor device and a second voltage rail. A control circuit is coupled to the first semiconductor device and the second semiconductor device. In response to a discharge condition, the control circuit is configured to activate the first semiconductor device and gradually activate the second semiconductor device, such that the energy potential between the first voltage rail and the second voltage rail is gradually dissipated through the semiconductor devices.04-29-2010
20100194205Isolation circuitry and method for hiding a power consumption characteristic of an associated processing circuit - An isolation circuitry and method are provided for coupling between a power supply and processing circuitry in order to provide power to the processing circuitry whilst hiding a power consumption characteristic of that processing circuitry. The isolation circuitry comprises a plurality of sub-circuits, with each sub-circuit comprising a capacitor, a first switch configured to provide a first connection between the capacitor and the power supply, a second switch configured to provide a second connection between the capacitor and the processing circuitry, and a third switch configured to provide a third connection across the capacitor to partially discharge the capacitor. Control circuitry controls the plurality of sub-circuits, such that within each sub-circuit the first switch, second switch and third switch are placed in an active state in a repeating sequence. Each of the plurality of sub-circuits further comprises a comparator configured to place the third switch in an open state when a predetermined non-zero voltage difference across the capacitor is reached during the active state of the third switch. By such an approach, it is ensured that the voltage across the comparator at the end of the discharge operation is always the same irrespective of the voltage present at the start of the discharge operation. As a result, the power consumption characteristic of the processing circuitry is entirely hidden by the isolation circuitry. Further, the isolation circuitry of the present invention provides a particular power efficient mechanism for hiding the power consumption characteristic of the processing circuitry.08-05-2010
20130015717Method and Apparatus for Transistor Switch IsolationAANM Dykstra; Jeffrey A.AACI PalatineAAST ILAACO USAAGP Dykstra; Jeffrey A. Palatine IL US - A transistor switch that provides isolation is described. The transistor switch is adapted to receive an input signal at an input terminal and either transmit the input signal to an output terminal when the transistor switch is in a first state or ground the input signal when the transistor switch is in a second state. The transistor switch comprises series switches, which couple the input terminal to the output terminal when the transistor switch is in the first state; shunt switches, which couple the input terminal to ground when the transistor switch is in the second state; and filters to provide isolation between the input terminal and the output terminal.01-17-2013
307096000 INTERMITTENT REGULATORY INTERRUPTION OF SYSTEM 2
20120038218POWER TRANSMISSION SYSTEM - A power transmission system a power transmission apparatus, a center frequency acquiring unit, and a control unit. The power transmission apparatus includes a primary-side coupling electrode electrically configured to couple to a secondary-side coupling electrode and connected load circuit of a power receiving apparatus, a high-frequency voltage generating circuit configured to generate and apply a high-frequency voltage to the primary-side coupling electrode, and a driving power circuit that supplies driving power to the high-frequency voltage generating circuit. The center frequency acquiring unit acquires a center frequency at which a high-frequency high voltage applied to coupling electrode is minimized in a state in which a low load is applied to the secondary-side coupling electrode of the power receiving apparatus and the frequency of the generated high-frequency voltage is varied. The control unit sets a driving frequency of the high-frequency voltage generating circuit at or near the center frequency to supply power to the power receiving apparatus.02-16-2012
20120299387DIAGNOSTICS OF INTEGRATED SOLAR POWER - A method for detecting faults in a solar cell includes measuring at least one operational parameter of a solar cell, measuring an output of the solar cell, identifying differences between the measured output of the solar cell and estimated outputs of a first and second model of operating modes of the solar cell, generating probabilities corresponding to the likelihood that each model corresponds to the actual operating mode of the solar call based on the identified differences, and disconnecting the output of the solar cell from a load in response to the identified current operating mode being the operating mode of the second model.11-29-2012
307146000 UNIDIRECTIONAL CONDUCTOR SYSTEMS 1
20120280577METHOD AND APPARATUS FOR TRANSMITTING DISCONTINUOUS MONOPOLARIZED ELECTRICAL ENERGY - Method and apparatus for periodical transmission of electrical energy, with a high level of effectiveness, at low cost, with zero voltage times and heat dissipation times, using one or more alternating polarization electrical energy supply sources, to one or multiple destinations, with a form of electrical energy constituted by discontinuous monopolarized periodic sections, known as discontinuous transmission current, transmitted via transmission lines with zero voltage times and exclusive heat dissipation times, via electrical wires, for each polarity, across a transmission distance, with subsequent addition of the various discontinuous monopolarized sections, in direct form with no control, with no alteration to the qualities of the waveform and with no loss of energy or of the properties thereof in terms of the direct addition and delivery thereof, as alternating polarization periodic energy applicable to every type of voltage level, electric current density, alternating polarity waveforms and transmission length and frequency conditions.11-08-2012
307095000 ANTI-ELECTROLYSIS 1
20110080049Corrosion Reducing Two-Wire Control Systems - A control system for a two-wire power and communication system is described herein. A gateway connects to an irrigation controller and at least two wires that are further connected to a plurality of decoders. The gateway includes an H-bridge circuit that creates an alternating potential at the same potential or lower than the nearby ground. In this respect, when one of the at least two communication wires are damaged, little or no wire corrosion will occur.04-07-2011

Patent applications in class Electrical transmission or interconnection systems

Patent applications in all subclasses Electrical transmission or interconnection systems