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Patexia Peter W.’s

Peter W. > Patents

Doc No Title Issue date
09723671 AC-powered LED light engine Aug 1, 2017
09585212 AC-powered LED light engine Feb 28, 2017
09491821 AC-powered LED light engine Nov 8, 2016
09167641 Phase controlled dimming LED driver system and method thereof Oct 20, 2015
08994293 Single phase bridgeless boost converter for LED lighting applications Mar 31, 2015
08736189 Electronic ballasts with high-frequency-current blocking component or positive current feedback May 27, 2014
08203276 Phase controlled dimming LED driver system and method thereof Jun 19, 2012
08018173 Ballasts for fluorescent lamps Sep 13, 2011
07432660 IC-based low cost reliable electronic ballast with multiple striking attempts and end of lamp life protection Oct 7, 2008
07423386 Power supply circuits and methods for supplying stable power to control circuitry in an electronic ballast Sep 9, 2008
07132803 High efficiency 4-lamp instant start ballast Nov 7, 2006
07098607 Electronic ballast with lossless snubber capacitor circuit Aug 29, 2006
07098608 Lossless circuit for sampling of lamp voltage Aug 29, 2006
07098606 Electronic ballast with open circuit voltage control and cable compensation Aug 29, 2006
07019662 LED drive for generating constant light output Mar 28, 2006
06791275 Low pressure gas discharge lamp ballast with on-off indicator Sep 14, 2004
06437520 Electronic ballast with cross-coupled outputs Aug 20, 2002
06420838 Fluorescent lamp ballast with integrated circuit Jul 16, 2002
06177769 Electric Ballast with selective power dissipation Jan 23, 2001
06137239 Electronic ballast with selective load control Oct 24, 2000
06111365 Fast starting, surge limited, electronic ballast Aug 29, 2000
06023132 Electronic ballast deriving auxilliary power from lamp output Feb 8, 2000
05982113 Electronic ballast producing voltage having trapezoidal envelope for instant start lamps Nov 9, 1999
05973455 Electronic ballast with filament cut-out Oct 26, 1999
05925990 Microprocessor controlled electronic ballast Jul 20, 1999
05747941 Electronic ballast that monitors direct current through lamp filaments May 5, 1998
05539281 Externally dimmable electronic ballast Jul 23, 1996
05500576 Low height ballast for fluorescent lamps Mar 19, 1996
05493181 Capacitive lamp out detector Feb 20, 1996
05493180 Lamp protective, electronic ballast Feb 20, 1996
05461287 Booster driven inverter ballast employing the output from the inverter to trigger the booster Oct 24, 1995
05416388 Electronic ballast with two transistors and two transformers May 16, 1995
05412287 Circuit for powering a gas discharge lamp May 2, 1995
05399944 Ballast circuit for driving gas discharge Mar 21, 1995
05396155 Self-dimming electronic ballast Mar 7, 1995
05396153 Protection circuit for electronic ballasts which use charge pump power factor correction Mar 7, 1995
05374875 High-power factor circuit for energizing gas discharge lamps Dec 20, 1994
05373218 Toggle brightening circuit for powering gas discharge lamps and method for operating gas discharge lamps Dec 13, 1994
05363018 Ballast circuit equipped with ground fault detector Nov 8, 1994
05113236 Integrated circuit device particularly adapted for high voltage applications May 12, 1992
04656366 Control circuitry using two branch circuits for high voltage solid-state switches Apr 7, 1987
04608590 High voltage dielectrically isolated solid-state switch Aug 26, 1986
04602268 High voltage dielectrically isolated dual gate solid-state switch Jul 22, 1986
04587656 High voltage solid-state switch May 6, 1986
04587545 High voltage dielectrically isolated remote gate solid-state switch May 6, 1986
04586073 High voltage junction solid-state switch Apr 29, 1986
04528462 Integrated circuit switch using stacked SCRs Jul 9, 1985
04528461 Integrated circuit switch using stacked SCRs Jul 9, 1985
04516037 Control circuitry for high voltage solid-state switches May 7, 1985
04480219 Phase-to-voltage converter Oct 30, 1984
04349751 Control circuitry using a pull-down transistor for high voltage solid-state switches Sep 14, 1982
04345163 Control circuitry for high voltage solid-state switches Aug 17, 1982
04323942 Solid-state protector circuitry using gated diode switch Apr 6, 1982
04309715 Integral turn-on high voltage switch Jan 5, 1982
04271445 Solid-state protector circuitry using gated diode switch Jun 2, 1981
04250409 Control circuitry using a pull-down transistor for high voltage field terminated diode solid-state switches Feb 10, 1981
04242697 Dielectrically isolated high voltage semiconductor devices Dec 30, 1980
04232328 Dielectrically-isolated integrated circuit complementary transistors for high voltage use Nov 4, 1980
04167748 High voltage monolithic transistor circuit Sep 11, 1979
04131910 High voltage semiconductor devices Dec 26, 1978
04130827 Integrated circuit switching network using low substrate leakage current thyristor construction Dec 19, 1978
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