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| Number | Title | Issue Date |
| 7310038 | Electromechanical device for selecting coil voltage and locking the coil in place A system for selecting coil voltage in an electrical device comprises a housing and a coil in the housing having a plurality of windings. Each winding has a pair of pins. A slider supports a plurality of moveable contacts and is moveably mounted in the housing proxi... | 12/18/2007 |
| 7304867 | DC-DC converter of multi-output type A DC-DC converter of multi-output type is provided wherein a primary winding 5a is wound around core halves 5g, 5h of a transformer 5 between first and second secondary windings 5b, 5c of t... | 12/04/2007 |
| 7301440 | Power line communication system and method The present invention provides a device for providing communications through power lines comprised of multiple conductors by transmitting the data signals through a plurality of the conductors. One embodiment of the present invention may be comprised of a transmit c... | 11/27/2007 |
| 7286036 | Method for selecting coil voltage and locking the coil in place A system for selecting coil voltage in an electrical device comprises a housing and a coil in the housing having a plurality of windings. Each winding has a pair of pins. A slider supports a plurality of moveable contacts and is moveably mounted in the housing proxi... | 10/23/2007 |
| 7271692 | Slider for selecting coil voltage and locking the coil in place A system for selecting coil voltage in an electrical device comprises a housing and a coil in the housing having a plurality of windings. Each winding has a pair of pins. A slider supports a plurality of moveable contacts and is moveably mounted in the housing proxi... | 09/18/2007 |
| 7218089 | Method and apparatus for implementing same phase power supply scheme The method and apparatus for implementing the same phase power supply scheme of the present invention is to utilize means selecting one phase from the three source lines, and supplying power only to the load at single phase line with the neutral line as a return (gr... | 05/15/2007 |
| 7132819 | Floating power supply and method of using the same A power supply of the present invention comprises a transducer having a transducer and a voltage regulator. The transducer is coupled to an electrically non-conductive medium, which may be a light pipe. The electrically non-conductive medium is coupled to a non-elec... | 11/07/2006 |
| 7129693 | Modular voltage sensor A voltage sensor is described that consists of a plurality of identical series-connected sections, where each section is comprised of an arrangement of impedance elements. The sensor is optimized to provide an output ratio that is substantially immune to changes in ... | 10/31/2006 |
| 7123032 | Voltage sensor and dielectric material A voltage sensor is described that consists of an arrangement of impedance elements. The sensor is optimized to provide an output ratio that is substantially immune to changes in voltage, temperature variations or aging. Also disclosed is a material with a large and... | 10/17/2006 |
| 7103240 | Method and apparatus for providing inductive coupling and decoupling of high-frequency, high-bandwidth data signals directly on and off of a high voltage power line The present invention is drawn to an electrically “closed” method and apparatus for transmitting and receiving data signals over a high voltage power line. Inductive coupling is employed for coupling and decoupling the data signal directly on to and off of a sin... | 09/05/2006 |
| 7103485 | Method for compensating secondary current of current transformers A method for preventing the unwanted maloperation of a protective relay system that is caused by the imprecise detection of an actual secondary current value resulting from a measured secondary current being distorted comprises the steps of calculating difference va... | 09/05/2006 |
| 7102478 | Power line coupling device and method of using the same The coupling device of the present invention includes a housing, a first fastening member attached to said housing and coupled to the power line, a second fastening member attached to the housing and coupled to the power line, an inductor providing an impedance to d... | 09/05/2006 |
| 7075414 | Device and method for communicating data signals through multiple power line conductors The present invention provides a device for providing communications through power lines comprised of multiple conductors by transmitting the data signals through a plurality of the conductors. One embodiment of the present invention may be comprised of a transmit c... | 07/11/2006 |
| 7053756 | Facilitating communication of data signals on electric power systems The invention includes a method, system, and device for communicating a data signal on an electric power system. The inventive method includes communicating the data signal to the electric power system, and modifying the characteristics of the electric power system ... | 05/30/2006 |
| 7046124 | Power line coupling device and method of using the same The coupler of the present invention couples broadband RF signals to and from a power line conductor. The coupler of one embodiment that is for use with overhead power lines includes a length of URD MV cable with the neutral conductor removed and that is communicati... | 05/16/2006 |
| 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 |
| 6998962 | Power line communication apparatus and method of using the same A communication device for use with a power line communication system is provided. One embodiment forms a bypass device and comprises a low voltage coupler, a low voltage signal conditioner, a controller, a medium voltage modem, a first medium voltage signal conditi... | 02/14/2006 |
| 6980091 | Power line communication system and method of operating the same The present invention provides a system for operating a power line communications system that is comprised of a plurality of network elements, which may take the form of repeaters, bypass devices, backhaul devices, wireless backhaul devices, enhanced bypass device, ... | 12/27/2005 |
| 6980090 | Device and method for coupling with electrical distribution network infrastructure to provide communications A device for providing communications through power lines that are communicatively coupled to an electrical distribution network infrastructure and to the internal wiring of at least one customer premises having one or more communication devices therein is provided.... | 12/27/2005 |
| 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 |
| 6977578 | Method of isolating data in a power line communications network Isolating data in a power line communications system. Although plural subscribers receive electric power distributed from a common distribution transformer, it is desirable to isolate their branch lines from one another when those branch lines are used to conduct da... | 12/20/2005 |
| 6965303 | Power line communication system and method A method of communicatively coupling power line communication (PLC) devices to a first and second overhead power line conductor that travel in a substantially parallel physical arrangement and in spaced-apart relation is provided. The method may comprise coupling a ... | 11/15/2005 |
| 6965302 | Power line communication system and method of using the same The communication system of one embodiment is for communicating data through a power distribution system having a medium voltage power line and low voltage power line and comprises a first device comprising a first wireless transceiver, a first modem in communicatio... | 11/15/2005 |
| 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 |
| 6950567 | Method and apparatus for providing inductive coupling and decoupling of high-frequency, high-bandwidth data signals directly on and off of a high voltage power line The present invention is drawn to an electrically “closed” method and apparatus for transmitting and receiving data signals over a high voltage power line. Inductive coupling is employed for coupling and decoupling the data signal directly on to and off of a sin... | 09/27/2005 |
| 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 |
| 6841975 | Voltage regulator having insert slots A voltage regulator having insert slots adopted for used on extension lines to stabilize electric current comprises a body which has an upper shell and a lower shell. The body is divided in a socket zone and a voltage stabilizing zone which houses an annular transfo... | 01/11/2005 |
| 6577111 | Controlling magnetizing current in a transformer by comparing the difference between first and second positive peak values of the magnetizing current with a threshold Differential measurement of a transformer magnetizing current and a delta-modulation technique is used to provide compensation for dc saturation of the transformer core, with faster response times, low losses, and with immunity to dc drift in the measurin... | 06/10/2003 |
| 6121765 | Isolated electrical power supply A isolated power supply for protecting electrical devices from transient voltages and currents is disclosed. Specifically, the filter has a toroid and resistor which are used in conjunction with an isolator transformer. The transformer's secondary winding... | 09/19/2000 |
| 6002246 | Flyback transformer In a flyback transformer, an insulating cover is interposed between a main body casing and a focusing pack casing. A through-hole is formed through a ceramic resistor accommodated in the focusing pack casing. A fixing hole is formed through the insulating... | 12/14/1999 |
| 5883508 | Voltage transformer with voltage divider for measuring voltage in medium high and high voltage installations A voltage transformer with a voltage divider for measuring the voltage in medium high voltage and high voltage installations have a combined arrangement of an ohmic divider resistor and elements for compensating ambient electromagnetic effects, and the di... | 03/16/1999 |
| 5689180 | Isolated electrical power supply A isolated power supply for protecting electrical devices from transient voltages and currents is disclosed. Specifically, the filter has a toroid and resistor which are used in conjunction with an isolator transformer. The transformer's secondary winding... | 11/18/1997 |
| 5666047 | Dielectric transformer A dielectric power transformer comprises a tuning inductor having a nonmatic core connected in parallel with a capacitive voltage divider. The dielectric power transformer transforms the voltage of an alternating current power source connected across the... | 09/09/1997 |
| 5440225 | Core for coil device such as power transformers, choke coils used in switching power supply The invention pertains to a core for a coil device of a switching power supply which can avoid accidental breakage of the portion where the core cross-sectional area narrows. When one core segment is rotated 180 degrees about its center axis in the long d... | 08/08/1995 |
| 5287479 | Flyback transformer In a flyback transformer having a focus pack, in order to facilitate the manufacture and assembly of the focus pack, the focus pack mounted on the flyback transformer is constituted by an outer case portion and an inner case portion, and the outer and inn... | 02/15/1994 |
| 5220495 | Arrangement and method for accurately sensing voltage of a high-impedance source and supplying power to a variable burden An arrangement is provided for accurately sensing the source voltage of a high-impedance source while supplying a variable burden. A current-sensing element is connected in series with a load circuit across a high-impedance source. The load circuit includ... | 06/15/1993 |
| 5093613 | Transformer A transformer with interference suppression includes a primary winding (1) with a first primary coil (27), one end of which is connected to a primary reference point (19), and also includes a second primary coil (39). The transformer has a secondary windi... | 03/03/1992 |
| 4906859 | Power supply circuit with symmetrically tapped auto-transformer An auto-transformer has first and second input terminals and first, second and third output terminals, the second output terminal being connected to a center tap of a coil and the first and third output terminals being connected to such points of the coil... | 03/06/1990 |
| 4818895 | Direct current sense lead In a circuit assembly (36) having a semiconductor chip such as a MOSFET (12) mounted on a drain terminal lead frame (6) on a ceramic substrate (4), a combined source and gate return reference jumper wire (40) is connected between a current sense lead fram... | 04/04/1989 |
| 4607211 | Method of correcting inaccurate instrumental potential transformer ratio To compensate for voltage ratio errors in a cascaded core instrument potential transformer, the coils of an outer coupling winding otherwise utilized to magnetically couple an adjacent pair of cores together are electrically connected into the primary win... | 08/19/1986 |
