Patents Assigned to Microtronic US, Inc.
  • High impedance bias circuit
    Patent number: 6353344
    Abstract: A high input impedance circuit for a buffer amplifier of a hearing aid microphone includes a transistor coupled across an input of the buffer amplifier and providing a high impedance transconductance, and a control circuit operatively coupled with the transistor to control the effective value of the input impedance provided thereby.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: March 5, 2002
    Assignee: Microtronic US, Inc.
    Inventor: Adrianus M. Lafort