Patents by Inventor John H. Aseltine

John H. Aseltine 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).

  • Battery charger apparatus and method with multiple range current control
    Patent number: 5554921
    Abstract: An improved battery charger apparatus and method with multiple range current control includes a programmable current source (101) for providing a charge current (105) to charge a battery (107). An amplitude of the charge current (105) is dependent on a charge demand signal (117) supplied to the programmable current source (101). A scaler (109) provides a scaled charge current signal (111), dependent on the charge current (105) and a current range signal (113). A charge current control unit (115) regulates the charge current (105) by providing the charge demand signal (117) to the programmable current source (101) dependent on the scaled charge current signal (111). More than one amplitude of the charge current (105) is provided to the battery (107), dependent on more than one current range signal (113) provided by the charge current control unit (115) to the scaler (109).
    Type: Grant
    Filed: December 23, 1993
    Date of Patent: September 10, 1996
    Assignee: Motorola, Inc.
    Inventors: Edward Li, Ralph M. Mitchell, John H. Aseltine