Patents by Inventor Maige Philippe

Maige Philippe 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).

  • Demagnetization monitoring device for a switching power supply with a primary and a secondary regulation
    Patent number: 4885673
    Abstract: A switching power supply comprises a primary regulation system (CI3) and a secondary regulation system (CI2, CI1), supplying control signals (Pp, Ps) for a main switch (TP) and further comprises a comparison means (22), the output of which (Is) is set to "1" when the transformer (TA) of the switching current is demagnetized. A logic circuit (CL) receives the output signals (Is, Pp, Ps) and supplies on its output (25) a control signal (VS5) for the main switch (Tp) which can be set to "0" for the switching OFF of the main switch or to "1" for its switching ON, as a function of the following criteria: the control signal is set to "1" if the comparator output signal is set to "1", and if the output signal of at least one of the regulators is set to "1", and the control signal is set to "0" when the regulator output signal which has caused to control signal to be set to "1" is set to "0".
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: December 5, 1989
    Assignee: SGS-Thomson Microelectronics S.A.
    Inventor: Maige Philippe