Patents by Inventor Lindsay Gordon Taylor

Lindsay Gordon Taylor 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).

  • Switch mode power supply
    Patent number: 5831837
    Abstract: A switch mode power supply comprises: a transformer (T1). A switch (Q4) alternately opens and closes a current path through a primary winding (L1) of the transformer in response to a pulse switching signal. An oscillator (110) generates the switching signal and synchronises the switching signal to a synchronisation signal (HSYNC') from an external source. A pulse width modulator (140) varies the pulse width of the switching signal in dependence upon a feedback signal indicative of a load on the power supply. A current limiter (150) turns off the switch to close the current path in response to current in the primary winding exceeding a threshold. Compensation means (160) is provided for varying the threshold in dependence upon the frequency of the synchronisation signal.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: November 3, 1998
    Assignee: International Business Machines Corporation
    Inventors: David Coyne, David Alexander Grant, Ewan James Lister, Lindsay Gordon Taylor