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Walt Disney was no Mickey Mouse inventor. He devised a serious animation camera which he patented. With the device, his company created "Snow White".
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| Number | Title | Issue Date |
| 7459861 | Lamp containing voltage conversion circuit including forward/reverse hybrid phase-control clipping circuit A lamp contains a lamp voltage conversion circuit which includes a forward/reverse hybrid phase-control clipping circuit that clips a load voltage and provides an RMS load voltage to the lamp. The phase-control clipping circuit has a time-based pulse source that tri... | 12/02/2008 |
| 7358689 | Phase-control power controller for converting a line voltage to a RMS load voltage A phase-control power controller converts a line voltage to an RMS load voltage and includes a phase-control clipping circuit that clips a load voltage to provide the RMS load voltage. The power controller may be in a base of a lamp and connected to a lamp terminal.... | 04/15/2008 |
| 7355300 | Solid state turbine engine ignition exciter having elevated temperature operational capability A turbine engine ignition exciter circuit applies energy stored in the exciter tank capacitor to the load (igniter plug) through a thyristor type semiconductor switching device that minimizes leakage current at elevated operating temperatures. The semiconductor swit... | 04/08/2008 |
| 7352134 | Lamp containing fixed reverse phase switching power supply with time-based phase pulse triggering control A lamp contains a lamp voltage conversion circuit within the lamp and connected to a lamp terminal. The voltage conversion circuit includes a phase-control clipping circuit that clips a load voltage and provides an RMS load voltage to the lamp. The phase-control cli... | 04/01/2008 |
| 7342359 | Forward/reverse hybrid switching power supply with time-based pulse triggering control A phase-control power controller that converts a line voltage to an RMS load voltage includes a fixed phase forward/reverse hybrid phase-control clipping circuit that performs phase-control clipping of a load voltage to provide an RMS load voltage. A conduction angl... | 03/11/2008 |
| 7339328 | Method of shaping light pulses emitted by an arc lamp A method of operating an arc lamp. The method includes introducing a primary voltage pulse into the arc lamp, thereby inducing a primary flow of electrical current in the arc lamp. The method also includes introducing at least one secondary voltage pulse into the ar... | 03/04/2008 |
| 7329996 | Sine wave light-adjusting apparatus A sine wave light-adjusting apparatus adjusts the input sine wave voltage and output a desired output sine wave voltage to a lamp according to the desired brightness of the lamp to achieve the light-adjusting effect by adjusting the switching period of a switch and ... | 02/12/2008 |
| 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 |
| 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 |
| 7196480 | Method of soft-starting a switching power supply containing phase-control clipping circuit A method of operating a power controller that converts a line voltage to an RMS load voltage includes a soft start in which a conduction angle of a phase-control clipping circuit is gradually increased to a steady state value that defines the RMS load voltage. The c... | 03/27/2007 |
| 7191084 | Method and apparatus for gas turbine engine ignition systems A method for testing an igniter coupled within a gas turbine engine, wherein the gas turbine engine includes a combustor, a pressure transducer coupled to the combustor, and a spark detector. The method includes operating the gas turbine engine, monitoring the opera... | 03/13/2007 |
| 7164238 | Energy savings device and method for a resistive and/or an inductive load and/or a capacitive load An energy savings device for an inductive, a resistive or a capacitive load, such as a fluorescent light fixture having a magnetic ballast or an electronic ballast, which is powered by an AC voltage waveform. The energy savings device includes a setting unit for set... | 01/16/2007 |
| 7145762 | Systems and methods for immobilizing using plural energy stores An electronic disabling device includes first and second electrodes positionable to establish first and second spaced apart contact points on a target having a high impedance air gap existing between at least one of the electrodes and the target. The power supply ge... | 12/05/2006 |
| 7116062 | Method of soft-starting a switching power supply including pulse width modulation circuit A method of operating a power controller that converts a line voltage to an RMS load voltage includes a soft start in which a duty cycle of a pulse width modulation circuit is gradually increased to a steady state value that defines the RMS load voltage. The control... | 10/03/2006 |
| 7095181 | Method and apparatus for controllably generating sparks in an ignition system or the like An apparatus for controllably generating sparks is provided. The apparatus includes a spark generating device; at least two output stages connected to the spark generating device; means for charging energy storage devices in the output stages and at least partially ... | 08/22/2006 |
| 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 |
| 7053562 | Lamp containing soft-start power supply A lamp includes a lamp voltage conversion circuit which converts a line voltage to an RMS load voltage by clipping or modulating a load voltage. The voltage conversion circuit includes a time-based signal source that triggers conduction in the voltage conversion cir... | 05/30/2006 |
| 7049758 | Method of soft-starting a switching power supply having time-based pulse triggering control A method of operating a power controller that converts a line voltage to an RMS load voltage includes a soft start in which a conduction angle or duty cycle is gradually increased to a steady state value that defines the RMS load voltage. The controller has a circui... | 05/23/2006 |
| 7034469 | Phase-control power controller with analog RMS load voltage regulation A phase-control power controller that converts a line voltage to an RMS load voltage includes an analog load voltage sensor that includes a light emitter that provides an optical output related to an RMS load voltage, and a phase-control circuit that has a compariso... | 04/25/2006 |
| 7030567 | 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... | 04/18/2006 |
| 6972529 | Switch mode power supply for a gas discharge lamp A switch mode power supply for igniting and operating a high-pressure gas discharge lamp includes an ignition sub-circuit which is coupled via a transformer to the circuit. The ignition sub-circuit has at least an ignition capacitor, and a switching element for disc... | 12/06/2005 |
| 6946807 | Lamp lighting apparatus for a discharge lamp A lamp lighting apparatus has a discharge drive circuit for supplying discharge current to the lamp, a voltage conversion circuit for boosting voltage from DC power and supplying the boosted voltage to the discharge drive circuit, and an arc discharge detecting circ... | 09/20/2005 |
| 6888320 | Switching power supply for discharge lamp and method for powering a lamp The invention concerns a method for powering a discharge lamp with a switching power supply. Said method is characterised in that it consists in: applying a voltage firing the lamp, then after the lamp has been energized, applying a lower service voltage to the firi... | 05/03/2005 |
| 6727661 | Self-ballasted fluorescent lamp The invention provides a self-ballasted fluorescent lamp provided with a function for operating normally when the self-ballasted fluorescent lamp is inadvertently connected to a lighting fixture provided with a light bulb dimmer if the dimmer is at the maximum level... | 04/27/2004 |
| 6707260 | Circuit arrangement including DC-AC converter having a dependable start circuit A self-oscillating bridge circuit comprises a start circuit for rendering one of the switches conductive for the first time at the start of operation. The start circuit is configured in such a way that it does not influence the switching of the bridge switches durin... | 03/16/2004 |
| 6642673 | Method and apparatus for disabling sodium ignitor upon failure of discharge lamp An ignitor disabling apparatus is provided to reliably and automatically disable a universal sodium ignitor with hot re-strike capability, or a 120 Hz pulse capability. The ignitor is configured to disable the ignitor portion of a HID lamp if the lamp fai... | 11/04/2003 |
| 6624600 | Lamp power measurement circuit A lamp power measurement circuit measures average power delivered to a gas discharge lamp. The circuit includes a voltage sensor having a first measurement output representative of AC voltage across the lamp and a current sensor having a second measuremen... | 09/23/2003 |
| 6191536 | Solid-state ignition system using true voltage triggering A capacitive discharge ignition system is described that incorporates a two-terminal passive network for controlling the discharge of a capacitive energy storage device into an igniter plug, wherein the network comprises a solid-state switch for alternate... | 02/20/2001 |
| 6104143 | Exciter circuit with solid switch device separated from discharge path An exciter circuit for an ignition system including an igniter plug. The exciter circuit includes an energy storage device comprising a pair of capacitors and a charging circuit for charging the capacitors of energy storage device to a predetermined volta... | 08/15/2000 |
| 6091208 | Lamp ignitor for starting conventional hid lamps and for starting and restarting hid lamps with hot restrike capability An ignitor is provided to predictably and reliably start a conventional HID lamp, or to start or restart an HID lamp having a hot strike capability such as a high pressure xenon HPS lamp or similar lamp. The ignitor is configured to prevent the premature ... | 07/18/2000 |
| 6081074 | Method and apparatus for offsetting power draw in a multiple channel system An apparatus and method are disclosed for reducing peaks of operating power drawn from a power source by a multi-channel system. Each channel of the system drives a load and demands operating power from the power source in an intermittent manner. Power is... | 06/27/2000 |
| 6049176 | Ignition device for an internal combustion engine An ignition device for an internal combustion engine capable of suppressing not only a decrease in the discharge energy of the spark plug but also the LC resonance itself. When an igniter 13 is turned on by an ignition timing control unit 14 and a current... | 04/11/2000 |
| 5854542 | Flashing and diming fluorescent lamps for a gaming device A method and apparatus for signaling promotional operation of a gaming device using existing fluorescent illumination lamps. An illumination lamp on a gaming device is operated continuously during normal operation, then flashed to signal promotional opera... | 12/29/1998 |
| 5754011 | Method and apparatus for controllably generating sparks in an ignition system or the like An apparatus for controllably generating sparks is provided. The apparatus includes a spark generating device; at least two output stages connected to the spark generating device; means for charging energy storage devices in the output stages and at least... | 05/19/1998 |
| 5621278 | Ignition apparatus A charging circuit charges a first capacitor to a first voltage and a second capacitor, via a potential divider to a second voltage smaller than the first voltage. A trigger circuit repeatedly triggers a thyristor which discharges the second capacitor int... | 04/15/1997 |
| 5602522 | Visual signaling system A visual signaling system is provided incorporating strobe light means which emits flashes of light at a constant rate, as distinguished from a random rate, despite variations in input voltage applied to the system. The system enables predetermined signal... | 02/11/1997 |
| 5594308 | High intensity discharge lamp starting circuit with automatic disablement of starting pulses A hot restart circuit for a high intensity discharge lamp includes a storage capacitor and SCR connected across a tapped portion of a ballast with a breakdown device to start the SCR. A charging circuit for the storage capacitor includes a diode, a pumpin... | 01/14/1997 |
| 5587630 | Continuous plasma ignition system A continuous plasma ignition system includes an exciter 12, an ignitor plug 16 and a cable 18 which connects the excitor 12 to the ignitor plug 16. The ignition system operates at the resonant frequency value fr of the circuit formed by the exc... | 12/24/1996 |
| 5561350 | Ignition System for a turbine engine A unipolar ignition of the invention provides a current waveform at the ignitor plug which initially rises relatively slowly, followed by a transition to a fast rising current which quickly peaks and thereafter slowly dissipates. Such a current waveform p... | 10/01/1996 |
| 5559404 | Capacitive pulse forming network The invention features a capacitive pulse forming network including at least one capacitor having a substantially linear discharge characteristic and at least another capacitor having a nonlinear discharge characteristic. The capacitive pulse forming netw... | 09/24/1996 |
