Patents by Inventor Ihor B. Karpowycz

Ihor B. Karpowycz 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).

  • Automatic gain control for an infrared source of an automotive emissions analyzer
    Patent number: 4480191
    Abstract: An automatic gain control circuit for driving a low mass infrared source used in an automotive exhaust gas emissions analyzer. A reference spectrum of radiant energy is monitored, demodulated and converted to an error signal to maintain the source at a constant energy output.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: October 30, 1984
    Assignee: Sun Electric Corporation
    Inventor: Ihor B. Karpowycz
  • Automatic biasing control circuit for emissions detector
    Patent number: 4479057
    Abstract: A pair of operational amplifiers, one of which having a photoresistor feedback connecting the output of the amplifier to its inverting input. The non-inverting input of the last named amplifier being provided with a voltage developed by the second operational amplifier. The second amplifier serves to control the output of the first amplifier in accordance with changes in the output.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: October 23, 1984
    Assignee: Sun Electric Corporation
    Inventor: Ihor B. Karpowycz