Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7675198 | Inductive pulse forming network for high-current, high-power applications An inductive pulse forming network stores electrical energy delivered from an outside prime power supply in the electric field of a low-voltage, high-energy density network capacitor. Through timed actuation of a series of one or more switches, the energy stored in ... | 03/09/2010 |
| 7582988 | Lethal electric fence energizer Electric fence energizers used with fencing systems are provided. The energizers can be used to provide an unsafe electric shock, as defined by safety agencies such as UL, where the electric fence energizers are capable of operating continuously regardless of the fe... | 09/01/2009 |
| 7554221 | High voltage pulsed power supply using solid state switches with droop compensation Systems and methods for generating a high voltage pulse. A series of voltage cells are connected such that charging capacitors can be charged in parallel and discharged in series. Each cell includes a main switch and a return switch. When the main switches are turne... | 06/30/2009 |
| 7550876 | High voltage pulsed power supply using solid state switches with voltage cell isolation Systems and methods for generating a high voltage pulse. A series of voltage cells are connected such that charging capacitors can be charged in parallel and discharged in series. Each cell includes a main switch and a return switch. When the main switches are turne... | 06/23/2009 |
| 7514820 | Capacitor pulse forming network with multiple pulse inductors Capacitor based pulse forming networks and methods are provided which require fewer inductors are that pulsed more frequently to provide a smaller, lower mass, and lower inductance pulse forming network having better pulse shaping characteristics than conventional p... | 04/07/2009 |
| 7514819 | Semiconductor switch assembly for pulse power apparatus A capacitor-type pulse power apparatus for generating an electric current power pulse through an electrical load, comprises a charging power supply and at least one pulse power supply module. The pulse power supply module includes at least one capacitor for storing ... | 04/07/2009 |
| 7474017 | Low impedance high performance pulse generator A compact Marx-type generator capable of producing high voltage pulses into low impedance loads. A parallel switch and distributed capacitance topology produce a coaxial-like conduction through the Marx-like circuit, resulting in a low source impedance. The parallel... | 01/06/2009 |
| 7336472 | Systems and methods for illuminating a spark gap in an electric discharge weapon An electric discharge weapon includes a high voltage circuit, a control circuit, and a light source. The high voltage circuit includes a spark gap having a breakdown voltage affected by light. A magnitude of an electric discharge of the weapon is related to the brea... | 02/26/2008 |
| 7307362 | Solid-state microsecond capacitance charger for high voltage and pulsed power A solid-state high-voltage pulse generator based on a three-phase chopper capacitance charger is described. In a first phase, an intermediate capacitor is resonance-charged via a diode. In a second phase, the intermediate capacitor is discharged to the load through ... | 12/11/2007 |
| 7301250 | High voltage pulsed power supply using solid state switches Systems and methods for generating a high voltage pulse. A series of voltage cells are connected such that charging capacitors can be charged in parallel and discharged in series. Each cell includes a main switch and a return switch. When the main switches are turne... | 11/27/2007 |
| 7286599 | Method and design of data communications transceiver for ultra wide band (UWB) operation in 3.1 GHz to 10.6 GHz frequency band An ultra wide band (UWB) communication system includes a channel filter bank to cover the 3.1 to 10.6 GHz band in channels having approximately equal bandwidth. A transmitter and a receiver may share the filter bank when the communication system is configured as a t... | 10/23/2007 |
| 7285962 | Method and apparatus for evaluating susceptibility to common mode noise in a computer system A system for injecting noise signals onto power generated by a power source comprising: a voltage source; a device under test having a power input in operable communication with the noise introduction apparatus; and a noise introduction apparatus interposed between ... | 10/23/2007 |
| 7218016 | Explosively driven radio frequency pulse generating apparatus A device for generating an intense radio frequency pulse through use of a helical Magneto-Cumulative Generator (MCG). The MCG provides a chemical explosion and acts as a converter to transform the chemical/mechanical energy into an electrical energy impulse. Due to ... | 05/15/2007 |
| 7218500 | High-voltage generator and accelerator using same In a high-voltage generator including a CW circuit (high-voltage circuit), where the CW circuit generates a high voltage through booster circuits that are provided for boosting an input voltage and connected to one another in multiple stages, a conductive shielding ... | 05/15/2007 |
| 7209373 | High voltage pulse generator A high voltage pulse generator utilizes an even number of Marx cells using L-C inversion topology. Each Marx cell is associated with an individual inverter transformer having a primary winding connected to the output of an ac power supply such as a series resonant i... | 04/24/2007 |
| 7202712 | Multiphase resonant pulse generators A multiphase resonant pulse generator (74) has N groups of N−1 switches (44,46,48) which, when activated, form N paths from a power supply (Vdc) to ground or a reference voltage. Here N is a positive integer greater than 2. Each of the paths includes... | 04/10/2007 |
| 7199560 | Switch-mode power supply voltage regulator and methodology Pulse width modulation of the connection of a load output terminal to a power supply terminal is effected. In response to a first level of the pulse width modulated signal, the load is disconnected from the power supply terminal, steady-state load voltage is preserv... | 04/03/2007 |
| 7199633 | Electric pulse generator and method for generating short electric pulses A method for generating short electric pulses, comprising the steps of generating a control pulse, feeding the control pulse to a bipolar transistor, which subsequently emits an output signal with a steep switch-off side by exploiting the charge storage effect of th... | 04/03/2007 |
| 7191735 | Electric animal deterrent for contact with underlying ground system The present invention provides a high voltage pulse generator used for deterring animals where the high voltage pulses are delivered to the animal through an electrical conductor that lays directly on the ground and is not insulated from the underlying ground system... | 03/20/2007 |
| 7187858 | Camera and method for operating a camera based upon available power in a supply In one aspect of the invention, a camera for use with a power supply is provided. The camera has a voltage detecting circuit adapted to detect a voltage level at the power source and to generate a voltage level signal. An image capture system is also provided and pe... | 03/06/2007 |
| 7170198 | Trigger arrangement for a Marx generator In trigger/firing arrangement in a Marx generator comprising n stage capacitors—n being a natural number greater than 1-, the same amount of spark gaps and 2(n−1) charging branches, with the spark gaps operating in a self-breakdown mode, the trigger-/firing arra... | 01/30/2007 |
| 7151330 | Apparatus and method for generating high voltages using a voltage inversion generator and multiple closed-path ferrites A vector inversion generator utilizes closed-path ferrites to modify the characteristics of the generator. The closed-path ferrites increase an inductance within a portion of the generator and additionally provide a protective shield for associated electronic circui... | 12/19/2006 |
| 7149234 | High repetition rate gas discharge laser with precise pulse timing control A high repetition rate, compact, modular gas discharge, ultraviolet laser. The laser is useful as a light source for very rapid inspections of wafers in an integrated circuit fabrication process. It is also useful for reticle writing at very rapid rates. A preferred... | 12/12/2006 |
| 7141896 | Pulse width modulation signal generator A signal generator has matched reference (4) and modulation (6) ramp circuits, each including current source (8, 32), capacitance (10) charged by the current source, voltage detector (18) and switch (24). The output of one o... | 11/28/2006 |
| 7135917 | Left-handed nonlinear transmission line media A left-handed nonlinear transmission line system has multiple nonlinear capacitors connected in series between input and output terminals and multiple inductances connected in parallel between the nonlinear capacitors and a return conductor extending between the inp... | 11/14/2006 |
| 7113013 | Pulse generating circuit and sampling circuit There is provided a pulse generating circuit, which generates two pulses having a sign of amplitude different from each other, including: a step recovery diode of which electric potential of an anode and a cathode is respectively output as the pulses; a bias unit op... | 09/26/2006 |
| 7102450 | Method and apparatus for providing clock signals at different locations with minimal clock skew A tapped phase shift ring oscillator may be used to provide multiple clock signals having variable phase delays. Phase delays may be selected to compensate for clock skews at different locations on high speed chips, or to provide clock signals having specific, desir... | 09/05/2006 |
| 7088795 | Ultra wide band base band receiver The present invention is a receiver having a radio frequency (RF) front end, a pulse detector operatively coupled to the RF front end, and a data recovery unit operatively coupled to the pulse detector. The data recovery unit is configured to receive spread spectrum... | 08/08/2006 |
| 7084528 | High-voltage pulse generating circuit A high-voltage pulse generating circuit has an inductor, a first semiconductor switch, and a second semiconductor switch which are connected in series between opposite terminals of a DC power supply unit, and a diode having a cathode terminal connected to a terminal... | 08/01/2006 |
| 7075347 | Multiphase resonant pulse generators A multiphase resonant pulse generator (74) has N groups of N-1 switches (44,46,48) which, when activated, form N paths from a power supply (Vdc) to ground or a reference voltage. Here N is a positive integer greater than 2. Each of the paths inc... | 07/11/2006 |
| 7071631 | Electromagnetic pulse device An electromagnetic pulse device having a conductive coil, and optionally a conductive core disposed within the coil and spaced apart there from. One or more plasma discharge devices are disposed at least partially along a length of the conductive coil and are spaced... | 07/04/2006 |
| 7067939 | High-voltage pulse generator for an electrostatic filter A high-voltage pulse generator includes a storage capacitor which is connected to a voltage source via leads. One of the leads is connected to a reference potential via a node point. A switching device is connected in parallel with the storage capacitor on the volta... | 06/27/2006 |
| 7064705 | Method of and apparatus for increasing the peak output pulse power delivered by capacitor-driven high-power diode and square-loop saturable reactor pulse compression generators with the aid of minority carrier sweep-out circuits within the pulse compression circuit A technique and apparatus for increasing the peak output pulse power of a capacitor driven high-power diode and square-loop saturable reactor pulse compression generator or transmitter (such as a Loran-C transmitter or other high power pulse generator) with the aid ... | 06/20/2006 |
| 7035246 | Maintaining a global time reference among a group of networked devices Synchronization is maintained among a plurality of network devices having local clocks that participate in a network. A first packet is broadcast from a first network device to other network devices that participate in the network. The first packet includes a global... | 04/25/2006 |
| 7031294 | Baseband wireless network for isochronous communication A wireless communication network system apparatus which provides for isochronous data transfer between node devices of the network, which provides at least one master node device which manages the data transmission between the other node devices of the network, whic... | 04/18/2006 |
| 7009370 | Pulse forming converter A scalable, interleaved pulse forming converter is disclosed having two Buck switching converter modules each contributing half to the total load of the circuit to produce a programmable current pulse. Synchronization pulses to the two modules are set 180 degrees ou... | 03/07/2006 |
| 7002300 | Microwave generator and method of radiating microwave energy Intensive microwave radiation in particular of great band width and energy over a relatively long period of time in the form of long pulse packets with a high pulse repetition frequency and a very high frequency spectrum can be achieved if microwave irradiation is e... | 02/21/2006 |
| 6948452 | Electric animal deterrent for contact with underlying ground system The present invention provides a high voltage pulse generator used for deterring animals where the high voltage pulses are delivered to the animal through an electrical conductor that lays directly on the ground and is not insulated from the underlying ground system... | 09/27/2005 |
| 6944148 | Apparatus and method for managing variable-sized data slots within a time division multiple access frame A reliable Medium Access Control layer protocol and method employing centralized management of communication in a Time Division Multiple Access network architecture. The Medium Access Control layer protocol implements Quality of Service guaranties to the layers of t... | 09/13/2005 |
| 6838786 | Device and method for generating intense and brief controlled variations of magnetic pressure in a sample of solid material A device and a method for generating intense and brief variations of magnetic pressure, predetermined and controlled, capable of being isentropic inside a sample (23) of solid material. An electromagnetic cell (1) includes a flat parallel line of condu... | 01/04/2005 |