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| Number | Title | Issue Date |
| 7834607 | Voltage generator with current limiting and semiconductor testing device A voltage generator with current limiting generates a voltage to be fed to a load of which load current is limited. The voltage generator includes an operational amplifier; an output resistance connected between an output terminal of the operational amplifier and a ... | 11/16/2010 |
| 7782040 | Information processing terminal and received voltage controlling method Disclosed herein is an information processing terminal including: a resonance circuit unit configured to have a resonance frequency varying linearly in accordance with a control signal so as to receive data and power from a reader/writer in noncontact fashion at the... | 08/24/2010 |
| 7440861 | Concept of compensating for piezo influences on integrated circuitry The inventive circuitry on a semiconductor chip includes a first functional element having a first electronic functional-element parameter that exhibits a dependence relating to the mechanical stress present in the semiconductor circuit chip in accordance with a fir... | 10/21/2008 |
| 7436164 | Untethered device employing tunable resonant circuit An untethered device is configured to inductively couple to a source device, which generates a varying magnetic field having a fixed frequency. The untethered device includes a tunable resonant circuit having a resonance frequency and configured to generate a supply... | 10/14/2008 |
| 7437260 | Concept of compensating for piezo influences on integrated circuitry A semiconductor chip includes a first functional element having a first electronic functional-element parameter exhibiting a dependence relating to the mechanical stress present in the semiconductor circuit chip, and being configured to provide a first output signal... | 10/14/2008 |
| 7302357 | Concept for compensating piezo-influences on an integrated semiconductor circuit A compensation signal, which derives the mechanical stress, which acts on an integrated semiconductor circuit, from two partial compensation signals, which are generated by semiconductor elements with different stress characteristics, can be determined in more detai... | 11/27/2007 |
| 7291813 | Controller for electric article for human body A controller for an electric article includes a voltage-stabilizing circuit for supplying voltage stable DC power, a microprocessor, a temperature-detecting circuit, a protecting circuit, a control circuit, and a switch circuit. The temperature-detecting circuit inc... | 11/06/2007 |
| 7274173 | Power control circuit for charge storage element A DC voltage source, a switch, and an inductor are connected together in series. The inductor is also connected together with a switch, a piezoelectric element in series. Moreover, the switches are connected in parallel with capacitors. By the control circuit, a sta... | 09/25/2007 |
| 7208919 | Method and apparatus for digitally regulating an output voltage using noise-shaped component selection Provided is a digitally-controlled linear regulator having noise-shaped component selection. The digitally-controlled linear regulator has a regulated-voltage sensor, a comparator module, a quantization module, and an impedance switching network. The regulated-volta... | 04/24/2007 |
| 7138787 | DC/DC converter A DC/DC converter according to the present invention includes first and second transformers, each including a primary winding and a secondary winding, the primary winding including first and second windings, a first diode connected to both ends of a series circuit i... | 11/21/2006 |
| 7088082 | Regulator with variable capacitor for stability compensation A voltage regulator with a variable compensation capacitor is capable of driving a large variable dynamic current load. The regulator includes an error amplifier and an output stage amplifier. The variable compensation capacitor is disposed between the output termin... | 08/08/2006 |
| 7042351 | Data communication over a power line Data signals are communicated between a power line and a computer, wherein the power line provides power to the computer via a distribution transformer and the computer is in communication with a wireless communication path. A first data signal is communicated with ... | 05/09/2006 |
| 6980089 | Non-intrusive coupling to shielded power cable The invention describes a method and a device for transporting a signal over a power line. The inventive method includes inducing an alternating current (AC) voltage from the power line, powering a transceiver device with the induced AC voltage, communicating the si... | 12/27/2005 |
| 6958680 | Power line communication system and method of using the same The last portion of the electrical distribution system is used to provide high-speed communications to residential homes. An aggregation point interfaces a medium voltage power line with a point-of-presence, and a power line bridge enables flow of communications sig... | 10/25/2005 |
| 6933835 | Data communication over a power line A signal is received from a first portion of a power line and at least a portion of the signal is converted to a non-electrically conducting signal. The non-electrically conducting signal may be communicated to a non-electrically conductive communication path. In th... | 08/23/2005 |
| 6570370 | Apparatus for automatic tuning and control of series resonant circuits An arrangement is disclosed to automatically match the resonant frequency of a series resonant circuit to an imposed operating frequency. A series resonant circuit is used to store or modulate magnetic energy or to generate high voltages. The circuit incl... | 05/27/2003 |
| 6549867 | Power supply feed-forward compensation technique A power supply feed-forward compensation technique using power consumption hints. One embodiment includes a power estimator to generate a power consumption hint that indicates a power consumption level of a component. A transfer function compensation circ... | 04/15/2003 |
| 6255635 | System and method for providing RF power to a load An RF power supply that is capable of tracking rapid changes in the resonant frequency of a load and capable of quickly responding to varying load conditions so as to deliver the desired amount of power. The present invention also provides an RF power sup... | 07/03/2001 |
| 6147476 | Two quadrant magamp regulator control circuit with fast dynamic response and full holdoff capability A magamp circuit including a saturable reactor for regulating the output energy delivered to a load and having a protective circuit for restricting energy flow to the load in the event of occurrence of a short-circuit at the load. Output energy fluctuatio... | 11/14/2000 |
| 6113760 | Power supply apparatus for sputtering and a sputtering apparatus using the power supply apparatus The present invention provides a sputtering power supply apparatus which realizes stable sputtering at a pressure lower than the discharge start pressure, so that scattering of sputtering particles due to collision with sputtering inert gas can be reduced... | 09/05/2000 |
| 5903182 | Method and system for providing a regulated core voltage to a processor within a computer system A method for providing a regulated core voltage to a processor within a computer system is disclosed. In accordance with a method and system of the present invention, a power supply is provided for a processor that includes multiple core transistors and m... | 05/11/1999 |
| 5867356 | Current limiting system and method A current limiting system for a circuit limits current flow through the system. The current limiting system comprises at least one main switch comprising first and second main switch contacts and a contactor connecting the first and second main switch con... | 02/02/1999 |
| 5821634 | Electrical circuit to reduce voltage supplied to sensitive components from elevated voltage supply of a vehicle battery An electrical circuit for a vehicle comprises a first branch or sub-circuit and at least one second branch or sub-circuit. The first branch or sub-circuit includes the vehicle battery, an electrical generator to be driven by the vehicle's engine or transm... | 10/13/1998 |
| 5777463 | Device for auto-adapting to the impedance of a supply line A device for automatically adapting to the impedance of a supply line to optimally supply a load. The device includes a switched mode voltage regulator from which is drawn a signal to be provided to the load, a regulation loop to adjust the amplitude of t... | 07/07/1998 |
| 5640082 | Duty cycle controlled switch variable capacitor circuit A switch controlled variable capacitor circuit that includes a capacitor having a first terminal and a second terminal; a switch connected across the first and second terminals of the capacitor; a pulse width modulator for controlling the switch to close ... | 06/17/1997 |
| 5612664 | Electronic circuit An electronic circuit in which resistors R0 . . . Rn+m are coupled in series with fusible cut-outs Q0 . . . Qn+m and in which at least one fusible cut-out Qn+1 . . . Qn+m is bridged by an a... | 03/18/1997 |
| 5608614 | Power converter A power converter has two switched capacitor circuits each including at least a plurality of sets of capacitors and switching elements, first of which circuits is provided for supplying a DC power to a load while second of which accumulates a power in a p... | 03/04/1997 |
| 5444610 | High-power modulator A high-power modulator includes a plurality of means for limiting voltage and a plurality of controllable switches. Each of the switches is connected in parallel with a different one of the voltage limiting means to form a plurality of parallel pairs. Eac... | 08/22/1995 |
| 5420498 | Circuit arrangement for generating a constant output voltage A circuit arrangement for generating a constant output voltage has a decoupling diode at the output side and has a circuit for actual value formation that is connected to the output of the circuit arrangement. In order, given high precision of the output ... | 05/30/1995 |
| 5245218 | Electric circuit for stabilizing the transfer impedance of an integrated circuit A system for regulating the transfer impedance of a plurality of current-to-voltage converters to a substantially equal value includes a reference voltage source and a reference impedance for providing a reference current. A reference current-to-voltage c... | 09/14/1993 |
| 5227782 | Hydrostatic interface unit An interface unit is provided for transmitting signals to and receiving signals from several transmitters. The interface unit includes a DC power supply, an active load, and a transmit/receive circuit connected to the first wire of a two wire circuit whic... | 07/13/1993 |
| 5087870 | Constant power circuit A constant power circuit for causing a constant power level to be dissipated by a load when an overpower condition is detected. The overpower condition is detected by measuring the voltage across and current drawn by the load in accordance with a programm... | 02/11/1992 |
| 5028862 | Voltage follower circuit for use in power level control circuits A power control system includes a voltage follower circuit which may be interposed between a load power control circuit which adjusts the level of power applied to a load, and a variable impedance whose internal impedance prescribes the desired level of p... | 07/02/1991 |
| 4992922 | Variable high-voltage generating circuit In a variable high-voltage generating circuit for an avalanche photodiode, a pulse oscillating circuit generates pulses, a current driving circuit current-amplifies the pulses, a Cockcroft-Walton circuit boosts and rectifies the pulses from the current dr... | 02/12/1991 |
| 4947102 | Feedback loop gain compensation for a switched resistor regulator A switched resistor regulator is constructed whose duty cycle response is nonlinear with small changes in input control voltage. Specifically, the response of a pulse-width modulator is made to increase less than linearly with small changes in input contr... | 08/07/1990 |
| 4736152 | Load current interference reducing apparatus A circuit arrangement for reducing an interference current produced by a load (2). The frequency of the interference current is considerably higher than the frequency of a supply voltage source (1) which is coupled to the load. In order to reduce the inte... | 04/05/1988 |
| 4663580 | Sealed lead-acid battery float charger and power supply A power supply is provided with a predetermined nonlinear temperature coefficient for float charging sealed lead-acid batteries and providing power to a load. A temperature compensation network in the power supply provides the predetermined nonlinear temp... | 05/05/1987 |
| 4634936 | Intrinsically safe miner's lamp An intrinsically safe battery pack arrangement for electrically powering electrical devices is disclosed. The power pack has a device for electronically determining a short in a cable or device and switching off the voltage to the power pack. The electron... | 01/06/1987 |
| 4186329 | Electrical power supplies An electrical power supply for an X-ray tube has a source capable of providing constant current at a desired potential to a capacitor means which supplies pulses of current in excess of the source current to the X-ray tube. As each pulse is supplied, the ... | 01/29/1980 |
| 4140962 | High voltage regulator using light dependent resistor A high voltage power supply is regulated using a light dependent resistor. A feedback circuit from the load controls the input to a light emitting diode which is optically coupled to a light dependent resistor connected in series with the load. Increases ... | 02/20/1979 |
