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Zdzislaw Gulczynski
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Medford, MA, US
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last 30 patents
Information
Patent Grant
High speed integrating digital-to-analog converter
Patent number
5,426,413
Issue date
Jun 20, 1995
Zdzislaw Gulczynski
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Switching power apparatus with 3-state driver
Patent number
5,270,904
Issue date
Dec 14, 1993
Zdzislaw Gulczynski
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
High power switching power supply with high power factor
Patent number
5,267,132
Issue date
Nov 30, 1993
Zdzislaw Gulczynski
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Encoder with error correction particularly for flash analog-to-digi...
Patent number
5,252,974
Issue date
Oct 12, 1993
Zdzislaw Gulczynski
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Synchronous switching power supply with boost and/or flyback conver...
Patent number
5,225,767
Issue date
Jul 6, 1993
Zdzislaw Gulczynski
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Synchronous switching power supply comprising boost or flyback conv...
Patent number
5,221,887
Issue date
Jun 22, 1993
Zdzislaw Gulczynski
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Ladderless true flash analog-to-digital converter with automatic ca...
Patent number
5,214,430
Issue date
May 25, 1993
Zdzislaw Gulczynski
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Dual flash analog-to-digital converter
Patent number
5,206,649
Issue date
Apr 27, 1993
Zdzislaw Gulczynski
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
3-terminal bidirectional switching power supply with AC or DC input...
Patent number
5,196,995
Issue date
Mar 23, 1993
Zdzislaw Gulczynski
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Flash analog-to-digital converter with integrating input stage
Patent number
5,173,698
Issue date
Dec 22, 1992
Zdzislaw Gulczynski
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Switching power supply with constant or sinusoidal input current
Patent number
5,164,656
Issue date
Nov 17, 1992
Zdzislaw Gulczynski
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Synchronous switching power supply comprising buck converter
Patent number
5,164,657
Issue date
Nov 17, 1992
Zdzislaw Gulczynski
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Segmented encoder and digital memory particularly for flash analog-...
Patent number
5,155,489
Issue date
Oct 13, 1992
Zdzislaw Gulczynski
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Switching power supply with constant or sinusoidal input current an...
Patent number
5,155,430
Issue date
Oct 13, 1992
Zdzislaw Gulczynski
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Capacitive load driver with binary output
Patent number
5,155,381
Issue date
Oct 13, 1992
Zdzislaw Gulczynski
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Dual flash analog-to-digital converter
Patent number
5,099,241
Issue date
Mar 24, 1992
Zdzislaw Gulczynski
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Bidirectional switching power apparatus with AC or DC output
Patent number
5,057,990
Issue date
Oct 15, 1991
Zdzislaw Gulczynski
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Dual flash analog-to-digital converter
Patent number
5,041,832
Issue date
Aug 20, 1991
Zdzislaw Gulczynski
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Switching power supply comprising pair of converters for obtaining...
Patent number
4,999,568
Issue date
Mar 12, 1991
Zdzislaw Gulczynski
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Ultra efficient switching power amplifier
Patent number
4,980,649
Issue date
Dec 25, 1990
Zdzislaw Gulczynski
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Sample-and-hold amplifier with controllable source charger
Patent number
4,980,686
Issue date
Dec 25, 1990
Zdzislaw Gulczynski
G11 - INFORMATION STORAGE
Information
Patent Grant
Ultra fast digital-to-analog converter with independent bit current...
Patent number
4,958,155
Issue date
Sep 18, 1990
Zdzislaw Gulczynski
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
High power switching power supply having high power factor
Patent number
4,956,760
Issue date
Sep 11, 1990
Zdzislaw Gulczynski
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
High efficiency power factor correction circuit
Patent number
4,949,234
Issue date
Aug 14, 1990
Zdzislaw Gulczynski
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
High power switching power supply
Patent number
4,947,308
Issue date
Aug 7, 1990
Zdzislaw Gulczynski
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Ultra fast logic
Patent number
4,943,740
Issue date
Jul 24, 1990
Zdzislaw Gulczynski
G11 - INFORMATION STORAGE
Information
Patent Grant
Power switch driver
Patent number
4,940,906
Issue date
Jul 10, 1990
Zdzislaw Gulczynski
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
High speed integrating analog-to-digital converter
Patent number
4,940,982
Issue date
Jul 10, 1990
Zdzislaw Gulczynski
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
High accuracy reference ladder
Patent number
4,929,848
Issue date
May 29, 1990
Zdzislaw Gulczynski
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
High efficiency power amplifier comprising multilevel power supply
Patent number
4,871,980
Issue date
Oct 3, 1989
Zdzislaw Gulczynski
H03 - BASIC ELECTRONIC CIRCUITRY