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    2.
    发明专利
    未知

    公开(公告)号：DE69813670D1

    公开(公告)日：2003-05-28

    申请号：DE69813670

    申请日：1998-05-18

    Applicant: ST MICROELECTRONICS SA

    Inventor： BREMOND ANDRE ,  MERCERON PHILIPPE

    IPC: G10K9/15

    Abstract: The circuit provides control for a vibrating membrane (M) which is excited by a solenoid (S) mounted in series with a continuous supply (E) and a control switch (SW). A capacitor (C ) is arranged across the terminals of a series circuit comprising the solenoid (S) and the switch (SW). A device is provided to open the switch (SW) close the point when the current in the inductance passes through zero. The controlled switch may consist of a thyristor connected between the first terminal (A) of the capacitor and the first terminal (B) of the solenoid. The gate of the thyristor is connected to the first capacitor terminal by a Zener diode, and to its cathode via a resistance (R1). The thyristor provides the mechanism whereby the opening occurs in the vicinity of the zero crossing of the current.

    3.
    发明专利
    未知

    公开(公告)号：DE69726328D1

    公开(公告)日：2004-01-08

    申请号：DE69726328

    申请日：1997-03-25

    Applicant: ST MICROELECTRONICS SA

    Inventor： BREMOND ANDRE ,  MERCERON PHILIPPE

    IPC: H02H9/04 ,  H04M3/18 ,  H04Q3/42

    Abstract: The method involves performing protection for an interface (1) which is coupled between a telephone exchange and relays (I1,I2) connected to a subscriber line (T,R). On the line side of the relays, a single overload protection device (10) is used, with a thyristor module provided for each polarity of voltage. The overload protection device has parameters which are determined according to the relay control signal supplied from the interface. The relay control block (5) is switched conventionally by a transistor (Tc) which may be integrated with its base resistor (Rc) into the interface circuit.

    4.
    发明专利
    未知

    公开(公告)号：FR2832261A1

    公开(公告)日：2003-05-16

    申请号：FR0114657

    申请日：2001-11-13

    Applicant: ST MICROELECTRONICS SA

    Inventor： MERCERON PHILIPPE ,  KAROUI CHOUKRI

    IPC: H02H3/06 ,  H02H7/06 ,  H02J7/14 ,  H02H3/20 ,  H02H7/09

    Abstract: A device of protection of at least one circuit supplied by a voltage obtained from at least one inductive element, including a switch for short-circuiting the supply provided by the inductive element, and circuitry for turning on the switch when the supply voltage exceeds a predetermined threshold and for turning it off when it is smaller than the threshold.

    6.
    发明专利
    未知

    公开(公告)号：FR2782207B1

    公开(公告)日：2000-11-03

    申请号：FR9810167

    申请日：1998-08-04

    Applicant: ST MICROELECTRONICS SA

    Inventor： BREMOND ANDRE ,  MERCERON PHILIPPE

    IPC: F23Q3/00 ,  H03K3/57 ,  H02M5/257

    Abstract: The circuit receives an alternating voltage (Vac), and includes circuit blocks (3,4) which cause the frequency of the generated arcs to be approximately independent of any amplitude variations in Vac. The arcs are produced using an isolating transformer with its primary winding (L1) connected from the circuit blocks by a series capacitor (C). These control the capacitor charging and discharging to maintain constant amplitude current pulses in the capacitor. The circuit block regulating the capacitor charging and discharging contain constant current source and a switching section.

    7.
    发明专利
    未知

    公开(公告)号：FR2782207A1

    公开(公告)日：2000-02-11

    申请号：FR9810167

    申请日：1998-08-04

    Applicant: ST MICROELECTRONICS SA

    Inventor： BREMOND ANDRE ,  MERCERON PHILIPPE

    IPC: F23Q3/00 ,  H03K3/57 ,  H02M5/257

    Abstract: The circuit receives an alternating voltage (Vac), and includes circuit blocks (3,4) which cause the frequency of the generated arcs to be approximately independent of any amplitude variations in Vac. The arcs are produced using an isolating transformer with its primary winding (L1) connected from the circuit blocks by a series capacitor (C). These control the capacitor charging and discharging to maintain constant amplitude current pulses in the capacitor. The circuit block regulating the capacitor charging and discharging contain constant current source and a switching section.

    9.
    发明专利
    未知

    公开(公告)号：DE69939299D1

    公开(公告)日：2008-09-25

    申请号：DE69939299

    申请日：1999-08-04

    Applicant: ST MICROELECTRONICS SA

    Inventor： BREMOND ANDRE ,  MERCERON PHILIPPE

    IPC: H03K3/57 ,  F23Q3/00

    Abstract: The circuit receives an alternating voltage (Vac), and includes circuit blocks (3,4) which cause the frequency of the generated arcs to be approximately independent of any amplitude variations in Vac. The arcs are produced using an isolating transformer with its primary winding (L1) connected from the circuit blocks by a series capacitor (C). These control the capacitor charging and discharging to maintain constant amplitude current pulses in the capacitor. The circuit block regulating the capacitor charging and discharging contain constant current source and a switching section.

    10.
    发明专利
    未知

    公开(公告)号：FR2832261B1

    公开(公告)日：2005-03-25

    申请号：FR0114657

    申请日：2001-11-13

    Applicant: ST MICROELECTRONICS SA

    Inventor： MERCERON PHILIPPE ,  KAROUI CHOUKRI

    IPC: H02H3/06 ,  H02H7/06 ,  H02J7/14 ,  H02H3/20 ,  H02H7/09

    Abstract: A device of protection of at least one circuit supplied by a voltage obtained from at least one inductive element, including a switch for short-circuiting the supply provided by the inductive element, and circuitry for turning on the switch when the supply voltage exceeds a predetermined threshold and for turning it off when it is smaller than the threshold.

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