Patents by Inventor Herve Deletraz

Herve Deletraz 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).

  • Multi-stage power amplifier for audio frequencies
    Patent number: 6882225
    Abstract: The invention concerns a power amplifier consisting of three stages: a first feedback-free stage amplifying the input signal in current; a second stage amplifying in voltage the signal output from the first stage and comprising two direct current feedback half-circuits symmetrically implanted and operating over the whole frequency spectrum; a third feedback-free stage amplifying the current derived from the second stage and powering a loudspeaker.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: April 19, 2005
    Inventor: Hervé Deletraz
  • Power amplifier
    Publication number: 20040196101
    Abstract: The invention concerns a power amplifier consisting of three stages: a first feedback-free stage amplifying the input signal in current; a second stage amplifying in voltage the signal output from the first stage and comprising two direct current feedback half-circuits symmetrically implanted and operating over the whole frequency spectrum; a third feedback-free stage amplifying the current derived from the second stage and powering a loudspeaker.
    Type: Application
    Filed: May 10, 2004
    Publication date: October 7, 2004
    Inventor: Herve Deletraz