Patents by Inventor Albert G. Tarrillo

Albert G. Tarrillo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Self-oscillating DC-DC converter apparatus and method especially adaptable for VHF operation
    Patent number: 6055162
    Abstract: A DC-DC voltage converter 40, which is adaptable to VHF operation, has a power oscillator 52 to which a filtered input DC voltage 50 is applied for conversion to an output DC voltage. The power oscillator includes a push-pull amplifier 58, 60 and an impedance transformation circuit 62 to which the amplifier is connected. The power oscillator also includes a rectifier circuit 64 which is connected to the impedance transformation circuit. A feedback circuit 68 controls the frequency of the oscillator to regulate the output DC voltage. The oscillator frequency depends on the impedance values of oscillator circuit components and the values of a plurality of oscillator component intrinsic parameters.
    Type: Grant
    Filed: March 12, 1998
    Date of Patent: April 25, 2000
    Assignee: Northrop Grumman Corporation
    Inventors: Albert G. Tarrillo, Dennis Schaefer, Scott K. Suko, Edward L. Rich, III, Keith L. Rowe
  • Pulsed radar apparatus and method employing power distribution system having reduced cost and weight and enhanced efficiency and reliability
    Patent number: 5945941
    Abstract: A power distribution system (12) is provided in radar apparatus to distribute power from a 270 VDC source (60) through an intermediate power converter (70) and very high frequency (VHF) regulator/modulator units (80). Bus conductors (71,74) interconnect the source, the intermediate power converter, and the VHF units. Capacitors (71, 76) are connected to the bus conductors on the input and output sides of the intermediate power converter. Each VHF unit supplies modulating pulses to RF amplifiers (82) of an AESA array of the radar apparatus.
    Type: Grant
    Filed: March 12, 1998
    Date of Patent: August 31, 1999
    Assignee: Northrop Grumman Corporation
    Inventors: Edward L. Rich, III, Albert G. Tarrillo
  • Push-pull class-E bi-directional scanning circuit
    Patent number: 4926098
    Abstract: A bi-directional scanning system for a CRT is disclosed comprising: a vertical CRT deflection coil, a horizontal CRT deflection coil; two class-E switchmode amplifiers which are connected in a push-pull arrangement to convert a positive DC voltage and a negative DC voltage to a generally sinusoidal current for operating the horizontal CRT deflection coil; and a staircase voltage generator for operating the vertical CRT deflection coil.
    Type: Grant
    Filed: September 19, 1989
    Date of Patent: May 15, 1990
    Assignee: Zenith Electronics Corporation
    Inventor: Albert G. Tarrillo