http://www.internetfiles.org/download.php?id=Mngqsy1XQxOip5OeRshO Test für Upload files 360 Tage http://www.google.com/patents?vid=USPAT6104107 Method and apparatus for single line electrical transmission Stanislav Avramenko --------------------------------------------- Patent number: 4796173 Filing date: Feb 1, 1988 Issue date: Jan 3, 1989 Abstract A high-frequency resonant power converter transforms a relatively low D.C. input voltage to a relatively high A.C. link voltage to drive a resonant circuit. The high A.C. voltage appearing across a resonance circuit high-voltage capacitor is then transformed down to a relatively low value... More about this patent ------------------------------------------- Patent number: 4639844 Filing date: Aug 6, 1984 Issue date: Jan 27, 1987 Abstract A resonant current-driven power source is disclosed. Preferably, the power source is a DC to DC converter regulator including a inductor and capacitor electrically coupled to one another and an input inverter which converts an input DC voltage into an AC voltage having substantially no DC... More about this p ---------------------------------------------- Patent number: 5177675 Filing date: Oct 16, 1991 Issue date: Jan 5, 1993 Abstract A zero current/zero voltage resonant DC to DC converter operating at high frequency, utilizes the series/parallel approach to power conversion. A resonant transformer assembly is inserted into either the primary or secondary of the main transformer, to optimize the operating parameters of... More about this patent ------------------------------ Patent number: 5594629 Filing date: Feb 20, 1996 Issue date: Jan 14, 1997 Abstract A dc-to-dc power converter, comprising a transformer, a single primary-side power switching device and a parallel combination of a diode and a capacitance, is controlled to operate in a "natural" zero-voltage switching mode such that the power switching device is switched with zero-voltage... More about this patent ---------------------+++ Patent number: 4774649 Filing date: Jul 1, 1987 Issue date: Sep 27, 1988 Abstract A resonant power converter is disclosed which is constructed on an integrated magnetic core, with primary, secondary and tertiary windings occupying separate legs of the core. The tertiary winding is connected in a resonant circuit and induces a flux in the primary leg that causes the primary... More about this patent ------------------------------------- Patent number: 4823249 Filing date: Apr 27, 1987 Issue date: Apr 18, 1989 Abstract A high frequency DC to DC converter having at least two phase differentiated pulsed voltage sources, utilizes two phase differentiated unidirectional power flow resonant circuits to permit multiple quasi resonant operation of the converter and thereby gain the benefit of lowered EMI, high... More about this patent ----------------------------------------+++ Patent number: 4053813 Filing date: Mar 1, 1976 Issue date: Oct 11, 1977 Abstract A circuit for operating an electric discharge lamp comprises an inductor in series with the lamp, a capacitor in parallel with the lamp, and a transistorized inverter circuit connected in series with the inductor and the lamp. The operating frequency of the inverter increases with increasing... More about this patent ------------------------------------ Patent number: 4833584 Filing date: Oct 16, 1987 Issue date: May 23, 1989 Abstract An inverter has a resonant circuit composed of a parallel connected inductor and capacitor and a filter capacitor connected in series with the inductor which has a capacitance substantially greater than the resonant capacitor. A half bridge or full bridge switching circuit formed of pairs... More about this patent -----------------------------++++ Patent number: 3753071 Filing date: Jun 15, 1972 LOW COST TRANSISTORIZED INVERTER Inventors: Joseph C. Engel --------------------------- Patent number: 3754160 Filing date: Oct 28, 1971 Issue date: Aug 21, 1973 FOUR-LAMP DRIVER CIRCUIT FOR FLUORESCENT LAMPS Inventor: Stephen A. Jensen -------------------------------- Patent number: 4912368 Filing date: Sep 20, 1988 Issue date: Mar 27, 1990 Abstract A cold cathode discharge tube operating at a high frequency includes a capacitor mounted on at least one electrode terminal of the tube. The capacitor is a feedthrough capacitor, and serving as a ballast capacitor is electrically connected in series with the tube. The distributed capacitance... More about this patent -----------------------------------+++ neg Res.! Patent number: 3505562 Filing date: Apr 29, 1968 Issue date: Apr 7, 1970 More about this patent SINGLE TRANSISTOR INVERTER WITH A GAS TUBE CONNECTED DIRECTLY TO THE TRANSISTOR Joseph C. Engel -----------------------------+++ Patent number: 4286194 Filing date: Jun 7, 1979 Issue date: Aug 25, 1981 Abstract A generator for the starting and thereafter maintaining energization and operation of a load which has a relatively high impedance during starting and a substantially lower impedance after starting and during operation thereof. The load may be an ionic conduction lamp including a phosphor... More about this patent ------------------------------ Patent number: 3247422 Filing date: Jun 1, 1961 Issue date: Apr 19, 1966 SI X T TRANSISTOR INVERTER BALLASTING CIRCUIT Harry E. Schnitz ------------------------------------ Patent number: 4145636 Filing date: Aug 8, 1977 Issue date: Mar 20, 1979 Abstract There is disclosed an oscillator circuit for driving a fluorescent lamp, which comprises a power transistor having an emitter electrode connected to one terminal of a D.C. power source and a collector electrode connected to the other terminal of the D.C. power source through a primary winding... More about this patent ------------------------------------ Patent number: 3931544 Filing date: Dec 5, 1974 Issue date: Jan 6, 1976 Abstract An electronic ballast circuit for reducing the warm up time of high intensity discharge (HID) lamps wherein lamp current flow is abruptly reduced by a switching means responsive to load voltage variations upon attainment of power in an amount sufficient to activate the HID lamp. More about this patent --------------------------------------- Patent number: 5883471 Filing date: Jun 20, 1997 Issue date: Mar 16, 1999 Abstract A circuit and method for energizing a discharge device, such as a flashlamp. A discharge device is electrically coupled to a pair of capacitors which are both charged to a desired potential level. One of the capacitors discharges through the discharge device to initially energize the discharge... More about this patent ----------------------------------------+++ Energiesparlampe Patent number: 5214356 Filing date: May 21, 1992 Issue date: May 25, 1993 Abstract An electronic ballast is connected with the power line voltage of an ordinary electric utility power line and has an inverter functional to provide a high-frequency output voltage to a current-limiting circuit connected with a fluorescent lamp. The inverter includes a transistor whose collector-... More about this patent ----------------- Patent number: 3605003 Filing date: Mar 30, 1970 Issue date: Sep 1, 1971 STABILIZED SINE WAVE INVERTER (SCR) -----------------------+++ STABILIZED SINE WAVE INVERTER SEMICONDUCTOR SINE WAVE INVERTER Balthasar H. Pinckaers ---------------------------------+++ MOS cont SCR Patent number: 5111382 Filing date: Oct 23, 1990 Issue date: May 5, 1992 Abstract A high power, high frequency inverter has series/parallel resonant inverter elements and employs MOS controlled thyristors (MCTs) in the switching circuit. The resonant inverter elements include a split inductor for reducing peak voltage across the switches. A fault protection circuit cause... More about this patent ----------------------------------- Patent number: 5373433 Filing date: May 5, 1992 Issue date: Dec 13, 1994 Patent number: 5373433 Filing date: May 5, 1992 Issue date: Dec 13, 1994 Power inverter for generating voltage regulated sine wave replica Gregory H. Thomas Abstract A power inverter formed by several transformers having their secondary windings wired in series and their primary windings connected to respective switching bridges. The turns ratios of each of the primary windings vary from each other by a factor of 3 to provide good voltage resolution over... More about this patent --------------------------------------------------- Patent number: 4907145 Filing date: May 11, 1989 Issue date: Mar 6, 1990 Abstract In the sine wave inverter disclosed herein the input of a low pass filter is switched at high frequency between positive and negative supply voltages. The switching is controlled by a comparator which is responsive to a composite of signals which include contributions from a sine wave control... More about this patent ------------------------------------------------ Patent number: 2983860 Filing date: Oct 9, 1957 Issue date: May 9, 1961 VIBRATOR CONTROLLED TRANSISTOR INVERTER Gerald B. 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