Patents by Inventor M. Christian HEIL

M. Christian HEIL 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).

  • Device for measuring an electric current generated by an acoustic amplifier in order to actuate an acoustic speaker
    Patent number: 9949028
    Abstract: The present invention relates to a device for measuring an electric current generated by an acoustic amplifier in order to actuate an acoustic speaker comprising: a resistor (1) positioned in series between the amplifier and the speaker; a voltage-to-current converter (3), the inputs of which are connected to the terminals of the resistor (1), and which proportionally converts the difference in voltage across the terminals of the shunt to a signal current; a first current mirror (7), the input of which is connected to the output of the voltage-to-current converter (3) and the output of which is connected to a current-to-voltage converter (5); a constant bias current generator (9) connected to an input of the voltage-to-current converter (3) and the output of which is connected to the current-to-voltage converter (5) via a second current mirror (11), and capable of generating a bias current such that the device operates in linear mode and without saturation regardless of the electric current generated by th
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: April 17, 2018
    Assignee: L-ACOUSTICS
    Inventors: M. Christian Heil, Pierre Vaysse
  • DEVICE FOR MEASURING AN ELECTRIC CURRENT GENERATED BY AN ACOUSTIC AMPLIFIER IN ORDER TO ACTUATE AN ACOUSTIC SPEAKER
    Publication number: 20170238093
    Abstract: The present invention relates to a device for measuring an electric current generated by an acoustic amplifier in order to actuate an acoustic speaker comprising: a resistor (1) positioned in series between the amplifier and the speaker; a voltage-to-current converter (3), the inputs of which are connected to the terminals of the resistor (1), and which proportionally converts the difference in voltage across the terminals of the shunt to a signal current; a first current mirror (7), the input of which is connected to the output of the voltage-to-current converter (3) and the output of which is connected to a current-to-voltage converter (5); a constant bias current generator (9) connected to an input of the voltage-to-current converter (3) and the output of which is connected to the current-to-voltage converter (5) via a second current mirror (11), and capable of generating a bias current such that the device operates in linear mode and without saturation regardless of the electric current generated by th
    Type: Application
    Filed: February 15, 2017
    Publication date: August 17, 2017
    Inventor: M. Christian HEIL