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    2.
    发明专利
    未知

    公开(公告)号：DE69702226D1

    公开(公告)日：2000-07-13

    申请号：DE69702226

    申请日：1997-04-30

    Applicant: ST MICROELECTRONICS SRL ,  MAGNETI MARELLI SPA

    Inventor： GIORGETTA VALERIO ,  MASTELLA PAOLO ,  MAGGIONI GIAMPIETRO ,  CONTUCCI MIRCO

    IPC: F02D41/14

    Abstract: The circuit comprises a measurement resistor (Rs) in series with the heater (16, 28), a detector circuit (20) for providing a signal (VOP) indicative of the current flowing in the resistor (Rs), switching devices (PW1, PW2; PW3, PW4) for controlling the connection of the heater (16, 28) to a direct-current voltage source (Vbat) and the connection of the measurement resistor (Rs) in the supply circuit comprising the source (Vbat) and the heater (16, 28), and a control unit (18, 32) arranged to drive the switching devices (PW1, PW2; PW3, PW4) in a manner such that, each time the heater (16, 28) is activated, the measurement resistor (Rs) is kept disconnected from the supply circuit of the heater (16, 28) for a predetermined period of time and the measurement resistor (Rs) is then connected in the supply circuit of the heater (16, 28).

    3.
    发明专利
    未知

    公开(公告)号：DE69702226T2

    公开(公告)日：2000-10-12

    申请号：DE69702226

    申请日：1997-04-30

    Applicant: ST MICROELECTRONICS SRL ,  MAGNETI MARELLI SPA

    Inventor： GIORGETTA VALERIO ,  MASTELLA PAOLO ,  MAGGIONI GIAMPIETRO ,  CONTUCCI MIRCO

    IPC: F02D41/14

    Abstract: The circuit comprises a measurement resistor (Rs) in series with the heater (16, 28), a detector circuit (20) for providing a signal (VOP) indicative of the current flowing in the resistor (Rs), switching devices (PW1, PW2; PW3, PW4) for controlling the connection of the heater (16, 28) to a direct-current voltage source (Vbat) and the connection of the measurement resistor (Rs) in the supply circuit comprising the source (Vbat) and the heater (16, 28), and a control unit (18, 32) arranged to drive the switching devices (PW1, PW2; PW3, PW4) in a manner such that, each time the heater (16, 28) is activated, the measurement resistor (Rs) is kept disconnected from the supply circuit of the heater (16, 28) for a predetermined period of time and the measurement resistor (Rs) is then connected in the supply circuit of the heater (16, 28).

    4.
    发明专利
    未知

    公开(公告)号：ES2147413T3

    公开(公告)日：2000-09-01

    申请号：ES97107132

    申请日：1997-04-30

    Applicant: ST MICROELECTRONICS SRL ,  MAGNETI MARELLI SPA

    Inventor： GIORGETTA VALERIO ,  MASTELLA PAOLO ,  MAGGIONI GIAMPIETRO ,  CONTUCCI MIRCO

    IPC: F02D41/14

    Abstract: The circuit comprises a measurement resistor (Rs) in series with the heater (16, 28), a detector circuit (20) for providing a signal (VOP) indicative of the current flowing in the resistor (Rs), switching devices (PW1, PW2; PW3, PW4) for controlling the connection of the heater (16, 28) to a direct-current voltage source (Vbat) and the connection of the measurement resistor (Rs) in the supply circuit comprising the source (Vbat) and the heater (16, 28), and a control unit (18, 32) arranged to drive the switching devices (PW1, PW2; PW3, PW4) in a manner such that, each time the heater (16, 28) is activated, the measurement resistor (Rs) is kept disconnected from the supply circuit of the heater (16, 28) for a predetermined period of time and the measurement resistor (Rs) is then connected in the supply circuit of the heater (16, 28).

    CIRCUIT FOR DIAGNOSING ELECTRICAL LOAD STATE
    7.
    发明专利
    CIRCUIT FOR DIAGNOSING ELECTRICAL LOAD STATE 失效

    公开(公告)号：JPH10104305A

    公开(公告)日：1998-04-24

    申请号：JP25032897

    申请日：1997-09-16

    Applicant: SGS THOMSON MICROELECTRONICS ,  MAGNETI MARELLI SPA

    Inventor： CRESPI ANGELO ,  CHICCA STEFANIA ,  MASTELLA PAOLO ,  POLETTO VANNI

    IPC: G01R15/14 ,  G01R19/00 ,  G01R19/165 ,  G01R31/00 ,  G01R31/02 ,  G01R31/28

    Abstract: PROBLEM TO BE SOLVED: To decrease the area occupied by a circuit by providing a transistor between the output and a voltage compactor means, decreasing the maximum voltage at a coupling point, and thereby reducing the number of high-voltage parts. SOLUTION: A transistor DMOS1 withstands high voltage, and a circuit connected to the downstream side is at low voltage. The transistor DMOS1 is the only one high-voltage part used. The gate terminal of the transistor DMOS1 is connected to a low supply voltage Vdd. When a voltage Vs at a coupling point S is larger than the voltage value Vs- max, the transistor DMOS1 is cut off. The voltage value Vs- max is imparted by the expression Vs- max= Vdd-Vth, where Vth is the threshold value of the transistor DMOS1. When the Vout of the output OUT is lower than the value, at which the low-voltage device can withstand, the intended measurement is performed at the coupling point S having the voltage equal to the voltage Vout. A low-voltage comparator CDT finds the voltage range at the coupling point S.

    8.
    发明专利
    未知

    公开(公告)号：DE69302431T2

    公开(公告)日：1996-09-05

    申请号：DE69302431

    申请日：1993-03-18

    Applicant: MAGNETI MARELLI SPA

    Inventor： DE FILIPPIS PIETRO ,  SALERNO FRANCO ,  MASTELLA PAOLO

    IPC: H02P6/08 ,  H02P6/18 ,  H02P6/00

    Abstract: The interface circuit (IC) has a single input terminal (i) for to receiving an analogue or digital (PWM) control signal (Vin) indicative of the required speed of rotation of the motor (M). The type of input signal (Vin) is recognised by means of comparator circuits (C1, C2). The input signal (Vin) is processed differently according to its nature in order, in any case, to output an analogue signal (Vo) acceptable by the regulation and control circuit (Z) which pilots the motor (M).

    9.
    发明专利
    未知

    公开(公告)号：BR9700672A

    公开(公告)日：1998-09-01

    申请号：BR9700672

    申请日：1997-05-06

    Applicant: SGS THOMSON MICROELECTRONICS ,  MAGNETI MARELLI SPA

    Inventor： GIORGETTA VALERIO ,  MASTELLA PAOLO ,  MAGGIONI GIAMPETRO ,  CONTUCCI MIRCO

    IPC: F02D41/14 ,  H05B1/02

    Abstract: The circuit comprises a measurement resistor (Rs) in series with the heater (16, 28), a detector circuit (20) for providing a signal (VOP) indicative of the current flowing in the resistor (Rs), switching devices (PW1, PW2; PW3, PW4) for controlling the connection of the heater (16, 28) to a direct-current voltage source (Vbat) and the connection of the measurement resistor (Rs) in the supply circuit comprising the source (Vbat) and the heater (16, 28), and a control unit (18, 32) arranged to drive the switching devices (PW1, PW2; PW3, PW4) in a manner such that, each time the heater (16, 28) is activated, the measurement resistor (Rs) is kept disconnected from the supply circuit of the heater (16, 28) for a predetermined period of time and the measurement resistor (Rs) is then connected in the supply circuit of the heater (16, 28).

    10.
    发明专利
    未知

    公开(公告)号：IT1285863B1

    公开(公告)日：1998-06-24

    申请号：ITTO960378

    申请日：1996-05-08

    Applicant: MAGNETI MARELLI SPA ,  SGS THOMSON MICROELECTRONICS

    Inventor： GIORGETTA VALERIO ,  MASTELLA PAOLO ,  MAGGIONI GIAMPIERO ,  CONTUCCI MIRCO

    IPC: F02D41/14

    Abstract: The circuit comprises a measurement resistor (Rs) in series with the heater (16, 28), a detector circuit (20) for providing a signal (VOP) indicative of the current flowing in the resistor (Rs), switching devices (PW1, PW2; PW3, PW4) for controlling the connection of the heater (16, 28) to a direct-current voltage source (Vbat) and the connection of the measurement resistor (Rs) in the supply circuit comprising the source (Vbat) and the heater (16, 28), and a control unit (18, 32) arranged to drive the switching devices (PW1, PW2; PW3, PW4) in a manner such that, each time the heater (16, 28) is activated, the measurement resistor (Rs) is kept disconnected from the supply circuit of the heater (16, 28) for a predetermined period of time and the measurement resistor (Rs) is then connected in the supply circuit of the heater (16, 28).

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