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| Number | Title | Issue Date |
| 8067859 | Reverse polarity protection for MOSFETs The invention relates to a control circuit and a corresponding method for controlling MOSFETs coupled to the control circuit. The MOSFETs are coupled to a load to couple the load to a power supply, or the MOSFETs are coupled to a generator. In case of inverted polar... | 11/29/2011 |
| 8058751 | Circuit interrupter and method of processor phase synchronization A circuit breaker includes a line terminal, a load terminal, separable contacts electrically connected in series between the terminals, a neutral conductor, and an operating mechanism structured to open and close the contacts and trip open the contacts in response t... | 11/15/2011 |
| 7936093 | Phase control switching device In a phase control switching device that controls a closing phase of a three-phase switching device connected between a power-supply-side transmission line and a compensation transmission line having a shunt reactor, a closing-phase control unit operates based on a ... | 05/03/2011 |
| 7808128 | Remote monitoring of control decisions for network protectors Network protectors isolate the secondary side of a transformer from a load distribution network. It is useful to have information about the electrical parameters for the transformer and the load side of an open network protector and it is useful to have access to el... | 10/05/2010 |
| 7723871 | Heating power supply apparatus A plural number of bridge circuits, each having a rectifier circuit with positive half wave control electrodes and a rectifier circuit with negative half wave control electrodes, and each of the plural number of the bridge circuits is connected to one winding of a p... | 05/25/2010 |
| 7667353 | Remote electrical device switching control, and status monitoring and reporting system A capacitor bank status monitoring, control and reporting system for use with a capacitor bank with “wye”-connected capacitors having a common neutral confluence and that can be switched in and out of a multi-phase high-voltage power distribution system. There i... | 02/23/2010 |
| 7633185 | Apparatus for interfacing a three phase power supply to a load An apparatus monitors and controls application of three phases of alternating voltage to a load by detecting the sequence of the three phases. A switch module is operated, in response to the detected sequence, to ensure that the three phases are properly applied to ... | 12/15/2009 |
| 7589438 | Source phase sensitive transfer method and apparatus A method and apparatus for transferring AC electrical power to a load from a first power source to a second power source provides for a time delay in the transfer to avoid problems associated with differences in the phases between the power sources. The phase of the... | 09/15/2009 |
| 7560834 | Generator switch In a device for disconnecting and/or connecting m phases (u, v, and w) of an alternating voltage providing source (1) from n phases (n1, n2, n3) of a load (3), each of the m phases (u, v, w) of the source (1) independently i... | 07/14/2009 |
| 7482712 | DC power supply with input voltage polarity indication A multi-mode electromagnetic radiation emitting device comprising at least one source of electromagnetic radiation which emits radiation according to predefined or programmable user selectable instruction sets is disclosed. Reversal of the polarity of the device's p... | 01/27/2009 |
| 7427815 | Method, memory media and apparatus for detection of grid disconnect A phase shift procedure for detecting a disconnect of a power grid from a feeder that is connected to a load and a distributed generator. The phase shift procedure compares a current phase shift of the output voltage of the distributed generator with a predetermined... | 09/23/2008 |
| 7411768 | Low-loss rectifier with shoot-through current protection A transistor active bridge circuit (400) rectifies domestic AC mains (for example, 120V, 60 Hz) and/or foreign AC mains (for example, 230V, 50 Hz) with low power loss. The circuit includes first and second field effect transistors (102, 104) of a first... | 08/12/2008 |
| 7327122 | Battery heating circuit A battery delivers its rated capacity when the battery is below a temperature when the available battery capacity is limited. The battery includes a heating element, a temperature sensor, and a switch operatively connected to the heating element and temperature sens... | 02/05/2008 |
| 7312653 | NMOS reverse battery protection A reverse polarity protected system comprises a voltage source that includes positive and negative terminals. A polarity-sensitive device has a first terminal that communicates with the positive terminal of the voltage source, and that includes a second terminal. A ... | 12/25/2007 |
| 7305311 | Arc detection and handling in radio frequency power applications A radio frequency power delivery system comprises an RF power generator, arc detection circuitry, and control logic responsive to the arc detection circuitry. A dynamic boundary is computed about the measured value of a parameter representative of or related to the ... | 12/04/2007 |
| 7294983 | Motor drive circuit Two systems consisting of an on-off control section corresponding to the saturation drive system and a constant voltage control section corresponding to the constant voltage drive system are provided as a circuit for controlling the conduction state of a transistor ... | 11/13/2007 |
| 7288856 | Reverse battery protection circuit for power switch A circuit for protecting a power switch in the event of a reverse battery connection, wherein the power switch comprises a MOSFET having a body diode and the MOSFET is connected in series with a load, the circuit comprising terminals connected to the circuit and nor... | 10/30/2007 |
| 7285875 | Resonant converter with outputs of different polarities A secondary side series resonant circuit formed by at least one secondary winding and a secondary side series resonant capacitor is provided together with a secondary side series resonant circuit forming a current resonant converter, whereby a coupling type resonant... | 10/23/2007 |
| 7285876 | Regenerative gate drive circuit for power MOSFET A regenerative drive circuit for driving the gate of a power MOSFET of a switched mode power converter includes a pair of MOSFETS connected in series with a pair of coupled inductors L1, L2 and L3, L4 which are connected in parallel. A fi... | 10/23/2007 |
| 7282816 | Manual switch remote controller A manual switch remote controller is adapted for use with a power switch machine to electrically and selectively move switch points of a track switch between a normal position and a reverse position from a remote location in the field. In one preferred embodiment, t... | 10/16/2007 |
| 7271546 | Lighting device for dielectric barrier discharge lamp This invention aims to decrease the leakage current of a dielectric barrier discharge lamp, and to prevent generation of the luminance slope between both electrodes. Electrodes 3 and 4 are formed in the outer surface of the dielectric barrier discharge... | 09/18/2007 |
| 7259537 | Polarity-reversal protection circuit for energy sources A polarity-reversal protector for power sources, in particular for automobile batteries, which is connected between a power source and at least one consumer and/or at least one generator, is described. The polarity-reversal protector is to prevent the reverse polari... | 08/21/2007 |
| 7243527 | Sensing apparatus for a vehicle The sensing apparatus for a vehicle includes a case having an opening part formed so as to communicate with an outside. A printed circuit board is disposed inside of the case, and includes a circuit unit. A noxious gas sensing part is electrically connected with the... | 07/17/2007 |
| 7245230 | Dual magnetic field sensor unit The present inventions relate to a method and apparatus for adding Automatic Meter Reading (AMR) capabilities to utility meters that generate a magnetic field comprising magnetic flux that varies proportionally with the rate of resource consumption. The apparatus co... | 07/17/2007 |
| 7239225 | Pyrotechnic circuit breaker A circuit breaker including a pyrotechnic element configured to ablate, tear, or cut a portion of the circuit. The portion of the circuit to be broken may be formed to be readily broken and/or may be a current load-based fuse. Also, the circuit breaker may be config... | 07/03/2007 |
| 7236826 | System and method for graphically configuring leads Systems and methods are provided for graphically configuring leads for a medical device. According to one aspect, the system generally comprises a medical device and a processing device, such as a programmer or computer, adapted to be in communication with the medic... | 06/26/2007 |
| 7211964 | Lamp including phase-control power controller with digital RMS load voltage regulation A phase-control power controller that converts a line voltage to an RMS load voltage includes a phase-control circuit with a potentiometer and a capacitor whose resistance and capacitance determine clipping of a load voltage, a load sensing circuit that senses the l... | 05/01/2007 |
| 7199577 | Characterizing multiple DC supplies decoupling capacitors in PCB by anti-resonant frequencies Methods and systems formulate the impedance for decoupling capacitors of a multiple power supply printed circuit board considering plane capacitance, series resonant frequencies, parallel resonant frequencies and impedance. The impedances are evaluated at anti-reson... | 04/03/2007 |
| 7180762 | Cascoded rectifier A high voltage rectifier device exhibiting low forward resistance and fast switching time formed of a high voltage structure connected in a cascode configuration with a low voltage structure. The high voltage structure is a bidirectional normally on semiconductor sw... | 02/20/2007 |
| RE39446 | Power filter circuit responsive to supply system fault conditions A power filter circuit for protecting electronic equipment from electromagnetic interference introduced by a supply system circuit includes a fault/condition sensing circuit capable of detecting whether the supply system circuit is properly wired. The sensing circui... | 12/26/2006 |
| 7154239 | Controller for a brushless direct current motor A controller includes a power source unit, a drive circuit, and a state control circuit. The drive circuit is coupled to the power source unit, and includes a drive coil and a switching transistor unit. The switching transistor unit is operable in one of a circuit-m... | 12/26/2006 |
| 7149448 | Image forming apparatus having a plurality of developing means An image forming apparatus includes a plurality of developing portions capable of developing electrostatic latent images formed on an image bearing member, and a control portion for executing preparation operations for developing operations with respect to each of t... | 12/12/2006 |
| 7145268 | Fault-tolerant three-level inverter A method for driving a neutral point clamped three-level inverter is provided. In one exemplary embodiment, DC current is received at a neutral point-clamped three-level inverter. The inverter has a plurality of nodes including first, second and third output nodes. ... | 12/05/2006 |
| 7145267 | System and method for brownout protection of a FET based battery switch A switching circuit operative to switch between a first and second power source to an output is disclosed. The circuit comprises a MOSFET switch electrically connected to the first and second power sources and operative to provide power from either one of the power ... | 12/05/2006 |
| 7142046 | Current sharing using gate modulated diodes A system includes an output terminal at which power is provided to a load, wherein the load defines a load current. A respective power supply can be coupled to each of a plurality of input terminals for providing current to the load. Each of a plurality of gate modu... | 11/28/2006 |
| 7126801 | Polarity protection implemented with a MOSFET A polarity protection circuit contains a metal oxide semiconductor field effect transistor (FET) that pets its control voltage via an electrical connection from supply voltage lines and a transistor that pets its control voltage via another connection from the suppl... | 10/24/2006 |
| 7123124 | Pyrotechnic circuit breaker A circuit breaker including a pyrotechnic element configured to ablate or cut a portion of the circuit so as to break the circuit, thereby breaking the circuit. The portion of the circuit to be broken may be specially formed to be readily ablated or cut, and/or may ... | 10/17/2006 |
| 7122989 | Multiple speed mover assembly A mover assembly (16) that moves or positions an object (12) includes a mover output (226), an actuator (230), and a control system (18). The mover output (226) is connected to the object (12), and the actuator (23... | 10/17/2006 |
| 7095138 | Controller for plural supplies driving single load A controller is disclosed for determining that the currents from the two AC power sources are correctly phased. Required circuitry can be disposed within a housing from which extend power cables having single phase 240V AC, 50 A male connector plugs connected at rem... | 08/22/2006 |
| 7065662 | Information handling system featuring a power-based current limiting circuit A method of implementing a power-based current limiting circuit in an information handling system includes providing a power supply having an output voltage operating range that can vary between a first voltage output level and a second voltage output level. The pow... | 06/20/2006 |
