Patents by Inventor Mangalam K. Balachander

Mangalam K. Balachander 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).

  • Electronic ballast and power controller
    Patent number: 5449981
    Abstract: A relatively high efficiency, relatively light weight, relatively small electronic ballast or AC power controller for use in aircraft and elsewhere for controlling a fluorescent lamp load or other load includes an EMI filter, a multi-purpose transformer, a power conversion stage and a control circuitry stage. The ballast or controller operates to increase or decrease the voltage of the incoming sine wave AC voltage through a charging path for an energy storage inductor choke cooperating with an energy storage capacitor wherein the charging path for the capacitor is different from the discharge path of the capacitor to isolate the load from the charging of the capacitor and thus to provide an output to the load which is independent of the charging path and which is out of phase with the incoming waveform.
    Type: Grant
    Filed: February 17, 1993
    Date of Patent: September 12, 1995
    Assignee: Bruce Industries, Inc.
    Inventors: Samuel H. Auld, Jr., Mangalam K. Balachander, Douglas W. Brooks, Steven M. Jenkins, Jacek J. Marcinkowski
  • Electronic ballast and power controller
    Patent number: 5225741
    Abstract: A relatively high efficiency, relatively light weight, relatively small electronic ballast or AC power controller for use in aircraft and elsewhere for controlling a fluorescent lamp load or other load includes an EMI filter, a multi-purpose transformer, a power conversion stage and a control circuitry stage. The ballast or controller operates to increase or decrease the voltage of the incoming sine wave AC voltage through a charging path for an energy storage inductor choke cooperating with an energy storage capacitor wherein the charging path for the capacitor is different from the discharge path of the capacitor to isolate the load from the charging of the capacitor and thus to provide an output to the load which is independent of the charging path and which is out of phase with the incoming waveform.
    Type: Grant
    Filed: March 6, 1990
    Date of Patent: July 6, 1993
    Assignee: Bruce Industries, Inc.
    Inventors: Samuel H. Auld, Jr., Mangalam K. Balachander, Douglas W. Brooks, Steven M. Jenkins, Jacek J. Marcinkowski