公开(公告)号：IT1245237B

公开(公告)日：1994-09-13

申请号：ITMI910720

申请日：1991-03-18

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： BRAMBILLA MASSIMILIANO ,  POLETTO VANNI

IPC: G05F3/26 ,  G01R1/28 ,  G05F3/30 ,  H02J

Abstract: The generator of reference voltage comprises a first generator of current (1) suitable for generating a first current (I) that varies linearly with the supply voltage, a first generator of voltage (T10, T11, R4, R6, T6, T7, I3, T12) suitable for generating a constant first voltage (VBG) with zero thermal drift, a second generator of current (T10, T11, R4, R6, T6, T7, I3, T13, T14, T15, R5) suitable for generating a second current (I1) dependent on said voltage (VBG) with zero thermal drift, a second generator of voltage (T6, T7, T10, T11) suitable for generating a second voltage (DVBE) with given thermal drift, a third generator of current (T6, T7, T10, T11, T4, T5, T8, T9) suitable for generating a third current (I2) dependent on said voltage (DVBE) with given thermal drift and means (5) for combining said currents (I, I1, I2) together so as to produce across an output resistance (R7) an output voltage (Vout) having a value equal to the product of said output resistance (R7) by said first and third current (I, I2), divided by said second current (I1).

公开(公告)号：IT1241288B

公开(公告)日：1993-12-29

申请号：IT6790790

申请日：1990-11-20

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： POLETTO VANNI

IPC: G06F1/24 ,  H03K3/00 ,  H03K17/24 ,  B60R

Abstract: A process comprising stages consisting in: cutting a cylindrical bar into starting elements (1a); cold heading the starting element (1a) to produce a first cylindrical element (1b) having two portions (2, 11) of different diameters; cold heading the first element (1b) to produce a second element (1c) having a first cylindrical portion (2) and a second prismatic portion (22); cold forming the second element (1c), via backward extrusion, to produce a third element (1d) having a first cylindrical portion (2) and a second portion (42) consisting of a rectangular plate (43) and two tabs (44) extending from the plate; and finish machining the third element (1d).

公开(公告)号：DE3880538T2

公开(公告)日：1993-11-04

申请号：DE3880538

申请日：1988-03-14

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： POLETTO VANNI

IPC: H04Q3/42 ,  H04M19/00 ,  H04Q1/28

Abstract: A so-called switching voltage regulator (1) for an interface circuit (16) in a telephone subscriber line, being of a type adapted to control the on/off states of an electronic switch (SW), connected to the interface circuit (16) and consisting of first (T1) and second (T2) transistors interconnected into a Darlington arrangement, comprises an ON-state sensor (14) connected input-wise to the collector (C1) of the first transistor (T1) and an OFF-state sensor (12) connected input-wise to the base (B1) of the first transistor (T1), and a pair of current extractor devices (11,10) respectively associated with the related bases (B1,B2) of the first (T1) and second (T2) transistors. Also provided are first (A1) and second (A2) current sources, each connected to a corresponding current amplifier (8,9) and a third hold current source (A3), the first (8) of such amplifiers powering both current extractor devices (11,10) and the second amplifier (9) and third current source (A3) being connected to the base (B2) of the second transistor (T2), as well as first (7) and second (5) dual input logic AND gates, the first gate (7) having an input (H) associated with the output of the OFF-state sensor (12) via a storage cell (6), and the second gate (5) having an input (Y) associated with the output of the ON-state sensor (14) via a further storage cell (4); each amplifier is respectively tied operatively with the outputs (U1,U2) of the first (7) and second (5) logic gates, each gate receiving on the other input (K,J) an appropriate enable signal from the regulator (1), whereas the hold current source (A3) is operatively tied directly with the enable signal of the second logic gate (5). Such a regulator (1) can minimize the current draw from the high tension power supply (-50 Volts) and make the on and off turning of the electronic switch (SW), including the pair of transistors (T1,T2) connected to the telephone subscriber line, faster.

公开(公告)号：ITTO910688A1

公开(公告)日：1993-03-10

申请号：ITTO910688

申请日：1991-09-09

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： MORELLI MARCO ,  POLETTO VANNI

IPC: G05F20060101 ,  G05F1/56 ,  H02J1/00

公开(公告)号：ITMI910409A1

公开(公告)日：1992-08-19

申请号：ITMI910409

申请日：1991-02-18

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： COLANDREA FRANCESCO ,  POLETTO VANNI

IPC: H01L27/04 ,  H01L20060101 ,  H01L21/822 ,  H01L27/06 ,  H03K17/06 ,  H03K17/082

公开(公告)号：BR9702840A

公开(公告)日：1998-12-22

申请号：BR9702840

申请日：1997-09-05

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： POMA ALBERTO ,  POLETTO VANNI ,  MORELLI MARCO

IPC: G01F23/00 ,  H03K17/945

Abstract: A circuit for controlling the reserve lamp (LAMP) of a vehicle's fuel level indicator instrument (STR). The circuit uses a switch (SW1) controlled by an extremely asymmetric clock signal (CLK) periodically to switch, for a very short time, the signal (Rj) provided by the level sensor (SENS) towards a comparator (CMP) operable to compare this signal (Rj) with a threshold value (Rth) for the purpose of determining the state of the reserve lamp (LAMP).

公开(公告)号：DE69120507T2

公开(公告)日：1996-11-07

申请号：DE69120507

申请日：1991-11-07

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： POLETTO VANNI

IPC: G06F1/24 ,  H03K3/00 ,  H03K17/24

Abstract: A process comprising stages consisting in: cutting a cylindrical bar into starting elements (1a); cold heading the starting element (1a) to produce a first cylindrical element (1b) having two portions (2, 11) of different diameters; cold heading the first element (1b) to produce a second element (1c) having a first cylindrical portion (2) and a second prismatic portion (22); cold forming the second element (1c), via backward extrusion, to produce a third element (1d) having a first cylindrical portion (2) and a second portion (42) consisting of a rectangular plate (43) and two tabs (44) extending from the plate; and finish machining the third element (1d).

公开(公告)号：DE69210133T2

公开(公告)日：1996-09-05

申请号：DE69210133

申请日：1992-07-21

Applicant: SGS THOMSON MICROELECTRONICS ,  MAGNETI MARELLI SPA

Inventor： MAZZUCCO MICHELANGELO ,  POLETTO VANNI ,  MORELLI MARCO

IPC: G01N27/409 ,  H03F1/08 ,  H03F3/34 ,  H03F3/347 ,  H03F3/45

公开(公告)号：DE69120507D1

公开(公告)日：1996-08-01

申请号：DE69120507

申请日：1991-11-07

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： POLETTO VANNI

IPC: G06F1/24 ,  H03K3/00 ,  H03K17/24

Abstract: A process comprising stages consisting in: cutting a cylindrical bar into starting elements (1a); cold heading the starting element (1a) to produce a first cylindrical element (1b) having two portions (2, 11) of different diameters; cold heading the first element (1b) to produce a second element (1c) having a first cylindrical portion (2) and a second prismatic portion (22); cold forming the second element (1c), via backward extrusion, to produce a third element (1d) having a first cylindrical portion (2) and a second portion (42) consisting of a rectangular plate (43) and two tabs (44) extending from the plate; and finish machining the third element (1d).

公开(公告)号：DE69025497D1

公开(公告)日：1996-04-04

申请号：DE69025497

申请日：1990-05-08

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： POLETTO VANNI

IPC: H03F1/02 ,  H03F3/30

Abstract: A bias current source for the output stage (18) of an operational amplifier (10) is controllable. The bias current generator (20) senses the voltage differential on the differential operational amplifier inputs. When an input differential voltage is sensed which generates a rising output signal, additional bias current is provided to the output stage (18). When the output voltage is constant or falling, the bias current to the output stage is decreased.