Patents by Inventor Roberto Cavazzoni

Roberto Cavazzoni 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).

  • Active filter
    Patent number: 7683703
    Abstract: An active filter comprising a first stage (10), a second stage (20) and a third stage (30), each of them being provided with a respective operational amplifier (11, 21, 31); a feedback branch (50) defined by a resistor (51) connects the output (31c) of the third operational amplifier (31) to the inverting input (11a) of the first operational amplifier (11). A main resistor (60) is connected between the inverting input (11a) of the first operational amplifier (11) and a fixed-potential node, and in particular a grounded node.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: March 23, 2010
    Inventor: Roberto Cavazzoni
  • Active filter
    Publication number: 20060197587
    Abstract: An active filter comprising a first stage (10), a second stage (20) and a third stage (30), each of them being provided with a respective operational amplifier (11, 21, 31); a feedback branch (50) defined by a resistor (51) connects the output (31c) of the third operational amplifier (31) to the inverting input (11a) of the first operational amplifier (11). A main resistor (60) is connected between the inverting input (11a) of the first operational amplifier (11) and a fixed-potential node, and in particular a grounded node.
    Type: Application
    Filed: July 30, 2004
    Publication date: September 7, 2006
    Inventor: Roberto Cavazzoni
  • Active filter
    Patent number: 7038531
    Abstract: An active filter comprising a first operational amplifier (10) disposed in an inverting integral configuration through a feedback capacitor (14) and a main resistor (15), and a divider (20) connected through a first connecting terminal (22) thereof with a noninverting input (12) of the first operational amplifier (10). In a second embodiment filter 1 comprises a main operational amplifier (100) dispose in an inverting integral configuration through a capacitor (101) and a resistor (102), and a secondary operational amplifier (110) fed back through feedback means (120) and connected with the main operational amplifier (100) through a resistor (130). An inverting input (110a) of the secondary operational amplifier (110) is connected with a noninverting input (100b) of the main operational amplifier (100).
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: May 2, 2006
    Inventor: Roberto Cavazzoni
  • Active filter
    Publication number: 20050116767
    Abstract: An active filter comprising a first operational amplifier (10) disposed in an inverting integral configuration through a feedback capacitor (14) and a main resistor (15), and a divider (20) connected through a first connecting terminal (22) thereof with a noninverting input (12) of the first operational amplifier (10). In a second embodiment filter 1 comprises a main operational amplifier (100) disposed in an inverting integral configuration through a capacitor (101) and a resistor (102), and a secondary operational amplifier (110) fed back through feedback means (120) and connected with the main operational amplifier (100) through a resistor (130). An inverting input (110a) of the secondary operational amplifier (110) is connected with a noninverting input (100b) of the main operational amplifier (100).
    Type: Application
    Filed: December 23, 2002
    Publication date: June 2, 2005
    Inventor: Roberto Cavazzoni