Patents by Inventor Clyde Witchard

Clyde Witchard 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).

  • Switching amplifier
    Patent number: 7920023
    Abstract: A switching amplifier includes a modulator, which includes a pulse generator. The pulse generator generates positive and negative pulses, in response to an input signal, and the frequency of the negative pulses can be controlled independently of the frequency of the positive pulses. The positive pulses and negative pulses are combined to form a composite pulse stream, which can be low-pass filtered such that the filter output is an amplified version of the input signal.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: April 5, 2011
    Assignee: New Transducers Limited
    Inventor: Clyde Witchard
  • Switching Amplifier
    Publication number: 20100045377
    Abstract: A switching amplifier includes a modulator, which includes a pulse generator. The pulse generator generates positive and negative pulses, in response to an input signal, and the frequency of the negative pulses can be controlled independently of the frequency of the positive pulses. The positive pulses and negative pulses are combined to form a composite pulse stream, which can be low-pass filtered such that the filter output is an amplified version of the input signal.
    Type: Application
    Filed: August 31, 2007
    Publication date: February 25, 2010
    Inventor: Clyde Witchard