Patents by Inventor James H. Murdock

James H. Murdock 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).

  • Current mode control arrangement with load dependent ramp signal added to sensed current waveform
    Patent number: 4672518
    Abstract: A switching converter in which current mode voltage regulation is implemented includes circuitry to add ramp compensation to the sensed current signal at light load and reduce or disable this ramp signal compensation at heavy load. This load dependent ramp signal improves the stability of operation of the converter and maintains its inherent current limit performance over a wide range of loading. An alternative connection allows for disabling the current sense signal and hence, transforming the current mode to voltage mode control under light load.
    Type: Grant
    Filed: July 30, 1986
    Date of Patent: June 9, 1987
    Assignee: American Telephone and Telegraph Co., AT&T Bell Labs
    Inventor: James H. Murdock