Patents Assigned to Micro-Technology Inc.-Wisconsin
  • Power supply circuit for a discharge lamp
    Patent number: 5399943
    Abstract: An electronic power supply for use with a gas discharge lamp, including a transformer having its primary winding connected in parallel with a capacitor of a series resonant element connected between an inverter and the lamp, effective to limit the voltage from the power supply to a predetermined level.
    Type: Grant
    Filed: December 24, 1992
    Date of Patent: March 21, 1995
    Assignee: Micro-Technology, Inc.-Wisconsin
    Inventor: T. Chandrasekaran
  • Electronic ballast circuit for fluorescent lamps
    Patent number: 5394064
    Abstract: An electronic ballast circuit for multiple fluorescent lamps. Control is achieved by varying the voltage and the frequency of operation of an inverter utilized to drive the fluorescent lamps. A separate voltage boost converter provides regulated voltage to the converter. Dimming is accomplished by varying the voltage either manually or in response to sensor circuitry.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: February 28, 1995
    Assignee: Micro-Technology Inc.-Wisconsin
    Inventors: Krishnappa Ranganath, Alexander Kurnia
  • Universal calling/originating number identification
    Patent number: 5349638
    Abstract: An interface circuit used between a telephone office and a subscriber's telephone operated in response to signals identifying incoming calls to provide visual and/or audible indications of the identification information. The incoming signal information is also extended in decoded form to an associated computer, computer network, and/or television screen.
    Type: Grant
    Filed: January 25, 1993
    Date of Patent: September 20, 1994
    Assignee: Micro-Technology Inc.-Wisconsin
    Inventors: Satyan G. Pitroda, Krishnappa Ranganath