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Vladimir Zworykin, television pioneer ; Talking about an invention in which he played a critical role.
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| Number | Title | Issue Date |
| 7345856 | Method and apparatus for arc suppression in scanned ion beam processing equipment In an ion bean acceleration system, transient electrical arc suppression and ion beam accelerator biasing circuitry. Two-terminal circuitry, connectable in series, for suppressing arcs by automatically sensing arc conditions and switch from at least a first operatin... | 03/18/2008 |
| 7342754 | Bypass circuit to prevent arcing in a switching device A device is provided for preventing arcing between contacts of a switching device as the contacts of the switching device are opened. The device includes a coil suppression circuit connected in parallel with the coil. The coil suppression circuit dissipates the ener... | 03/11/2008 |
| 7339288 | Hybrid electrical switching device The invention relates to a hybrid electrical switching device, comprising an electromechanical relay including a mechanical switching element to be operated by an electrical coil, and a main semiconductor switching element including a control input and a current con... | 03/04/2008 |
| 7317264 | Method and apparatus to independently control contactors in a multiple contactor configuration A method and apparatus to independently control the closing or making of contactors in a modular contactor assembly is disclosed. The apparatus includes a contactor assembly having multiple contactors such that each contactor is separately controlled such that one c... | 01/08/2008 |
| 7268992 | Power supply with disconnect fuse A power supply in which a feed voltage (Us) is guided through at least one longitudinal branch to at least one output, the at least one branch having a disconnect fuse formed as a controlled semiconductor switch (SW1) and a monitoring unit (UWE) be... | 09/11/2007 |
| 7253637 | Arc fault circuit interrupter system In order to determine whether arcing is present in an electrical circuit, a sensor signal corresponding to current in said electrical circuit is processed. The sensor signal is filtered to determine the presence of noise in a predetermined frequency range and produc... | 08/07/2007 |
| 7233534 | Electronic circuit package An electronic apparatus which includes a wiring substrate which includes wiring conductors, and a plurality of semiconductor bare chips that are formed on the wiring substrate. The semiconductor bare chips include a processor for processing data and a circuit having... | 06/19/2007 |
| 7227732 | Apparatus and method for controlling open/close timing of relay A method and an apparatus measure an actual responsive time for a relay and control the open/close timing for the relay. The apparatus comprises a microprocessor and two conversion units. One conversion unit processes an input sinusoidal signal for the microprocesso... | 06/05/2007 |
| 7203040 | Method and circuit breaker for reducing arc flash during maintenance in a low voltage power circuit Maintenance trip functions override the normal or specified trip functions of a low voltage circuit breaker to reduce pickup currents and/or time delays to effect faster trips, which reduces arc energy produced by faults during maintenance or testing on a live circu... | 04/10/2007 |
| 7151656 | Arc fault circuit interrupter system A system for determining whether arcing is present in an electrical circuit in response to a sensor signal corresponding to current in the circuit includes a circuit for analyzing the sensor signal to determine the presence of broadband noise in a predetermined rang... | 12/19/2006 |
| 7145758 | Arc suppression circuit for electrical contacts A circuit to suppress arc across contacts of a relay is provided, in which the relay is electrically coupled to a power supply and a load. The circuit includes an arc suppression circuit electrically coupled between the first and second contacts of the relay, and th... | 12/05/2006 |
| 7145759 | Overcurrent protection circuit including auto-reset breaker and PTC resistor An overcurrent protection circuit for low-voltage, high-current electrical systems comprises a Positive Temperature Coefficient (PTC) resistor in series with an auto-reset thermal breaker. The breaker allows for intermittent current within an assumed product usage d... | 12/05/2006 |
| 7145757 | System for eliminating arcing faults and power distribution system employing the same A shorting system, which eliminates persistent arcing faults in power distribution equipment, includes a first shorting switch having separable contacts, an actuation input and a fuse electrically connected in series with those contacts. A second shorting switch inc... | 12/05/2006 |
| 7129653 | Self-contained, self-snubbed, HID dimming module that exhibits non-zero crossing detection switching A protection circuit for an HID dimming circuit is provided. A resistive component limits the initial current after a relay closes and current flows from a charged capacitor to a second capacitor. An inductive component limits the rate of change of current through t... | 10/31/2006 |
| 7123460 | Methods and systems for reducing power-on failure of integrated circuits Methods and systems for protecting integrated circuits from power-on sequence currents and for biasing transistors in paths susceptible to power-on sequence damage are provided. The system includes a plurality of protection circuits coupled between a first circuit i... | 10/17/2006 |
| 7120069 | Electronic circuit package An electronic apparatus which includes a wiring substrate which includes wiring conductors, and a plurality of semiconductor bare chips that are formed on the wiring substrate. The semiconductor bare chips include a processor for processing data and a circuit having... | 10/10/2006 |
| 7080449 | Method and a connector arrangement for connecting and disconnecting a generator to a circuit with an existing alternating current A method and a connector arrangement for connecting and disconnecting an electrical generator, such as a prime mover driven alternator (10), to a circuit with an existing alternating current such as the mains electricity supply (20). ... | 07/25/2006 |
| 7079363 | Hybrid DC electromagnetic contactor In a hybrid DC electromagnetic contactor, by including a power unit for supplying a certain power voltage; a main contact point of a breaking switch for providing a supply path of the power voltage by being switched in accordance with a voltage apply to an operation... | 07/18/2006 |
| 7068480 | Arc detection using load recognition, harmonic content and broadband noise A method of determining whether arcing is present in an electrical circuit includes sensing a change in current in the circuit and developing a corresponding input signal, analyzing the input signal to determine the presence of broadband noise in a predetermined ran... | 06/27/2006 |
| 7023683 | Electric relay control circuit A circuit and method for controlling two or more electric relays, wherein at least one of the relays are rated to handle a higher voltage level while at least one of the relays are rated to handle a lower voltage level. A controller selectively activates the relays ... | 04/04/2006 |
| 7012793 | Power converter with polarity reversal and inrush current protection circuit A power converter for converting an input power into a desired output power adapted to a power-receiving device. The power converter includes a polarity reversal protection circuit preferably constructed with a schottky diode that is used to ensure the correct conne... | 03/14/2006 |
| 6960844 | Electric switching device An electric switching device for alternating current comprises two branches (2, 3) connected in parallel in a current path and having each at least two contact members (4–7) connected in series. A semiconductor device (8) is adapted to interco... | 11/01/2005 |
| 6956725 | Current controlled contact arc suppressor The arc suppression system for electrical contacts includes a transistor, such as an IGBT, which is connected across the contacts. A control circuit controls the operation of the transistor such that the turning on of the transistor results in a current path around ... | 10/18/2005 |
| 6939723 | Method of forming haze-free BST films Described herein is a method for producing a haze-free (Ba, Sr)TiO3 (BST) film, and devices incorporating the same. In one embodiment, the BST film is made haze-free by depositing the film with a substantially uniform desired crystal orientation, for exam... | 09/06/2005 |
| 6892115 | Method and apparatus for optimized centralized critical control architecture for switchgear and power equipment A method of monitoring and controlling a power distribution system is provided. The power distribution system includes a plurality of circuit breakers, a plurality of node electronic units, and wherein each associated circuit breaker is electrically coupled with eac... | 05/10/2005 |
| 6818953 | Protection of an integrated circuit against electrostatic discharges and other overvoltages The forming of an integrated circuit including at least one element of electronic protection of the circuit formed of at least one switch for short-circuiting supply conductors arranged in a rail, the switch being integrated in the rail, under said conductors. ... | 11/16/2004 |
| 6693777 | Method for controlling the operation of a switching device A method for controlling the closing operation of a switching device, which is disposed on an electrical network connected to an inductive component. The method requires first data related to the electrical characteristics of the inductive component and t... | 02/17/2004 |
| 6643112 | Semiconductor switch-assisted electromechanical relay An electromechanical relay including a mechanical displacement electrical contact and a transistor parallel-connected with the electrical contact. The contact is closed for a voltage V corresponding to the forward direction of the transistor and a powerin... | 11/04/2003 |
| 6624989 | Arc suppressing circuit employing a triggerable electronic switch to protect switch contacts Circuits and methods are disclosed for suppressing arcing occurring in switch contacts that includes a triggerable electronic switch in parallel with a series connection of relay switches. The trigger electrode of the triggerable electronic switch is conn... | 09/23/2003 |
| 6466420 | High voltage disconnector having a moving contact that is moved at high speed A high voltage electrical disconnector that has a moving contact that moves at high speed comprises a moving first contact which is mounted to move along an axial direction relative to a fixed second contact, and which co-operates therewith to establish a... | 10/15/2002 |
| 6442452 | Control apparatus for carrying out switching operations in a switchgear assembly Switching operations in a switchgear assembly, in particular a medium-voltage switchgear assembly, are carried out via a control apparatus. The control apparatus has an electronic memory card for variable storage of control data which automatically initia... | 08/27/2002 |
| 6347024 | Hybrid power relay Hybrid power relay used for opening or closing electrical circuits, including an electrical contact having a mechanical movement, a semiconductor component in parallel with the electrical contact, and a control unit which in response to a logic input leve... | 02/12/2002 |
| 6295188 | Method of closing a circuit breaker synchronously A method of synchronously closing a hydraulically-controlled circuit breaker connected in an AC network, the method including, for each pole of the circuit breaker, using a microcontroller connected to the hydraulic control system via static switches to p... | 09/25/2001 |
| 6130398 | Plasma cutter for auxiliary power output of a power source A plasma arc cutting power supply, and method of providing plasma cutting power, is disclosed. It includes a source of power having, preferably an engine or transformer based power source, that provides a main power output and an auxiliary power output. A... | 10/10/2000 |
| 6078491 | Hybrid relay A hybrid relay with an electromagnetic relay system having at least one coil one core yoke unit, at least one armature which switches contacts and one power semiconductor whose switching path, in combination with the contacts switches the load circuit of ... | 06/20/2000 |
| 5933304 | Apparatus and method of interrupting current for reductions in arcing of the switch contacts A current interrupter circuit includes a primary current path and a secondary current path in parallel with one another and provided between input and output terminals. At least one solid state switch, preferably a power MOSFET, are interposed along the s... | 08/03/1999 |
| 5737160 | Electrical switches comprising arrangement of mechanical switches and PCT device An electrical switch arrangement, comprising a first mechanical switch, a second mechanical switch and a PTC device, with (a) the PTC device and second switch connected in parallel and the parallel combination connected in series with the first switch, or... | 04/07/1998 |
| 5734207 | Voltage polarity memory system and fuse-switch assembly usable therewith Disclosed herein is an apparatus for use in an AC power distribution system having a sinusoidal voltage source and a load, the apparatus including a circuit for selectively connecting and disconnecting the load from the source, a circuit for sensing volta... | 03/31/1998 |
| 5726843 | Current limiting circuit breaker A plurality of solid-state switches are provided in parallel with a main circuit switch. A main circuit current is detected by a first current detecting device. A current flowing in each of the plurality of solid-state switches is detected by a second cur... | 03/10/1998 |
| 5633540 | Surge-resistant relay switching circuit In a relay switching panel, a switching circuit operates to selectively connect and disconnect resistive, capacitive and inductive loads to an AC power source with substantially no arcing. The switching circuit comprises a pair of relays, preferably conne... | 05/27/1997 |
