Patents by Inventor George Bertram Dodson

George Bertram Dodson 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).

  • Fan control system
    Patent number: 6824362
    Abstract: A fan control system uses a closed loop system to adjust the actual operating speed of a fan or fans to a desired operating speed. The desired speed and actual speed are compared in a high gain amplifier to generate a control signal to adjust the actual operating speed of the fan given the feedback.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: November 30, 2004
    Assignee: ADC DSL Systems, Inc.
    Inventor: George Bertram Dodson, III
  • High speed optocoupler
    Patent number: 6756601
    Abstract: Apparatus and method for increasing the bandwidth of an optocoupler includes cascode coupling the optocoupler driver transistor with a buffer so as to reduce voltage variations across the driver transistor.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: June 29, 2004
    Assignee: ADC DSL Systems, Inc.
    Inventor: George Bertram Dodson, III
  • High speed optocoupler
    Publication number: 20040011973
    Abstract: Apparatus and method for increasing the bandwidth of an optocoupler includes cascode coupling the optocoupler driver transistor with a buffer so as to reduce voltage variations across the driver transistor.
    Type: Application
    Filed: July 16, 2002
    Publication date: January 22, 2004
    Applicant: ADC DSL Systems, Inc.
    Inventor: George Bertram Dodson, III
  • Fan control system
    Publication number: 20040009074
    Abstract: A fan control system uses a closed loop system to adjust the actual operating speed of a fan or fans to a desired operating speed. The desired speed and actual speed are compared in a high gain amplifier to generate a control signal to adjust the actual operating speed of the fan given the feedback.
    Type: Application
    Filed: July 15, 2002
    Publication date: January 15, 2004
    Applicant: ADC DSL Systems, Inc.
    Inventor: George Bertram Dodson
  • Differential voltage limiter
    Patent number: 6661118
    Abstract: A low cost differential voltage limiter circuit provides a feedback to regulate a voltage output of a voltage source. In one embodiment, the limiter circuit includes a transistor coupled to outputs of first and second voltage sources. If a differential voltage between the two sources exceeds a predetermined threshold, the output voltage of the higher source is reduced. In one embodiment, a PNP transistor is used to regulate the high voltage source.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: December 9, 2003
    Assignee: ADC DSL Systems, Inc.
    Inventor: George Bertram Dodson, III
  • Temperature and barometric responsive fan system
    Publication number: 20030173830
    Abstract: A management system and method are provided to adjust fans used for cooling equipment. The system includes one or more electric fans. The operational speed of the fan(s) is adjusted as the environmental parameters change. For example, the fan speed is increased as the temperature and elevation increase. In addition, fan failure circuitry provides a safe operation feature that increases fan supply voltage when a performance failure is detected.
    Type: Application
    Filed: March 18, 2002
    Publication date: September 18, 2003
    Applicant: ADC DSL Systems, Inc.
    Inventors: Christopher S. Smith, Sylvester T. Yu, George Bertram Dodson
  • Differential voltage limiter
    Publication number: 20030117020
    Abstract: A low cost differential voltage limiter circuit provides a feedback to regulate a voltage output of a voltage source. In one embodiment, the limiter circuit includes a transistor coupled to outputs of first and second voltage sources. If a differential voltage between the two sources exceeds a predetermined threshold, the output voltage of the higher source is reduced. In one embodiment, a PNP transistor is used to regulate the high voltage source.
    Type: Application
    Filed: December 21, 2001
    Publication date: June 26, 2003
    Applicant: ADC DSL System, Inc.
    Inventor: George Bertram Dodson