Patents by Inventor Artur J. Lewinski
Artur J. Lewinski 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).
-
Patent number: 9239368Abstract: Methods and apparatus for continuous ground fault self-test are disclosed. An example ground fault detection device includes a sense coil to detect current in a line conductor and a neutral conductor, the sense coil comprising a winding influenced by a current difference between the line conductor and the neutral conductor. The example ground fault detection device also includes a current bypass to facilitate a continuous current imbalance detected by the sense coil, and a ground fault detector circuit to detect at least one of the continuous current imbalance in the sense coil or a ground fault current imbalance.Type: GrantFiled: January 23, 2013Date of Patent: January 19, 2016Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Artur J. Lewinski, Ross Teggatz, Thomas E. Cosby
-
Patent number: 8384392Abstract: Methods and apparatus for continuous ground fault self-test are disclosed. An example ground fault detection device includes a sense coil to detect current in a line conductor and a neutral conductor, the sense coil comprising a winding influenced by a current difference between the line conductor and the neutral conductor. The example ground fault detection device also includes a current bypass to facilitate a continuous current imbalance detected by the sense coil, and a ground fault detector circuit to detect at least one of the continuous current imbalance in the sense coil or a ground fault current imbalance.Type: GrantFiled: October 24, 2007Date of Patent: February 26, 2013Assignee: Texas Instruments IncorporatedInventors: Artur J. Lewinski, Ross Teggatz, Thomas Edward Cosby
-
Patent number: 8311785Abstract: Methods and apparatus to minimize saturation in a ground fault detection device are disclosed. An example method includes connecting a capacitor simulator to a node of the ground fault detector device to prevent saturation, and monitoring power-line conductors for ground fault conditions with the ground fault detector device. An example apparatus to simulate a saturation capacitance in a ground fault device includes a sense coil induced by power-line conductors, and at least one of an amplifier or a current detector including an input connected to the sense coil and an output connected to a ground fault detector. The example apparatus also includes a saturation capacitor simulator connected to a node of at least one of the amplifier or the current detector to prevent saturation.Type: GrantFiled: October 24, 2007Date of Patent: November 13, 2012Assignee: Texas Instruments IncorporatedInventors: Artur J. Lewinski, Ross Teggatz, Thomas Edward Cosby
-
Patent number: 8018235Abstract: Methods and apparatus to facilitate ground fault detection with a single coil and an oscillator are disclosed. An example ground fault detection device includes a sense coil including a secondary winding surrounding a line conductor and a neutral conductor, the line conductor and the neutral conductor forming a primary winding. The example ground fault detection device also includes a voltage oscillator connected in series with the secondary winding to drive an oscillation component, and at least one of a detector or an amplifier connected in series with the secondary winding to detect at least one of a neutral-to-ground fault or a line-to-ground fault.Type: GrantFiled: October 24, 2007Date of Patent: September 13, 2011Assignee: Texas Instruments IncorporatedInventors: Artur J. Lewinski, Ross Teggatz, Thomas Edward Cosby
-
Patent number: 7973535Abstract: A ground fault detection device includes a sense coil including a primary winding and a secondary winding to detect current in a line conductor and a neutral conductor. It also includes a capacitor in parallel with the secondary winding and a virtual inductor to form a resonance circuit having a signal proportional to the current and being indicative of a ground fault condition.Type: GrantFiled: October 20, 2010Date of Patent: July 5, 2011Assignee: Texas Instruments IncorporatedInventors: Artur J. Lewinski, Ross Teggatz, Thomas E. Cosby
-
Publication number: 20110032646Abstract: A ground fault detection device includes a sense coil including a primary winding and a secondary winding to detect current in a line conductor and a neutral conductor.Type: ApplicationFiled: October 20, 2010Publication date: February 10, 2011Applicant: Texas Instruments IncorporatedInventors: Artur J. Lewinski, Ross Teggatz, Thomas Edward Cosby
-
Patent number: 7834636Abstract: A ground fault detection device includes a sense coil including a primary winding and a secondary winding to detect current in a line conductor and a neutral conductor. It also includes a capacitor in parallel with the secondary winding and a virtual inductor to form a resonance circuit having a signal proportional to the current and being indicative of a ground fault condition.Type: GrantFiled: October 24, 2007Date of Patent: November 16, 2010Assignee: Texas Instruments IncorporatedInventors: Artur J. Lewinski, Ross Teggatz, Thomas Edward Cosby
-
Publication number: 20080106833Abstract: Methods and apparatus to facilitate ground fault protection and self test with a single switch are disclosed. An example ground fault detection device includes a ground fault detector to receive a signal indicative of current in a line conductor and a neutral conductor, and a single switch to simulate a fault during a self test and to cause a relay to activate in response to at least one of a real fault or a failed self-test. An example method to self-test a ground fault detection device includes monitoring a self-test indicator for an indication to initiate the self-test, and when the indication to inititate the self-test is true, activating a switch to cause at least one fault diode to conduct for a predetermined self-test duration. The example method also includes monitoring at least one of a sense coil or the switch for a signal indicative of the self-test.Type: ApplicationFiled: October 24, 2007Publication date: May 8, 2008Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Artur J. Lewinski, Ross Teggatz, Thomas Edward Cosby
-
Publication number: 20080106268Abstract: Methods and apparatus to facilitate ground fault detection with a single coil are disclosed. An example ground fault detection device includes a sense coil to detect current in a line conductor and a neutral conductor, the sense coil including a primary winding and a secondary winding. The example ground fault detector also includes a capacitor in parallel with the secondary winding and an inductor to form a resonance circuit having a resonance frequency and having a signal proportional to the current, the signal indicative of a ground fault condition. An example method of detecting a ground fault includes driving a first capacitor with an inductor to generate a resonance signal component and monitoring an inductor signal to determine at least one of a neutral-to-ground fault, a line-to-ground fault, or a non-fault condition. The example method also includes generating a fault signal when at least one of the line-to-ground fault or the neutral-to-ground fault is detected.Type: ApplicationFiled: October 24, 2007Publication date: May 8, 2008Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Artur J. Lewinski, Ross Teggatz, Thomas Edward Cosby
-
Publication number: 20080109193Abstract: Methods and apparatus to minimize saturation in a ground fault detection device are disclosed. An example method includes connecting a capacitor simulator to a node of the ground fault detector device to prevent saturation, and monitoring power-line conductors for ground fault conditions with the ground fault detector device. An example apparatus to simulate a saturation capacitance in a ground fault device includes a sense coil induced by power-line conductors, and at least one of an amplifier or a current detector including an input connected to the sense coil and an output connected to a ground fault detector. The example apparatus also includes a saturation capacitor simulator connected to a node of at least one of the amplifier or the current detector to prevent saturation.Type: ApplicationFiled: October 24, 2007Publication date: May 8, 2008Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Artur J. Lewinski, Ross Teggatz, Thomas Edward Cosby
-
Publication number: 20080106831Abstract: Methods and apparatus for continuous ground fault self-test are disclosed. An example ground fault detection device includes a sense coil to detect current in a line conductor and a neutral conductor, the sense coil comprising a winding influenced by a current difference between the line conductor and the neutral conductor. The example ground fault detection device also includes a current bypass to facilitate a continuous current imbalance detected by the sense coil, and a ground fault detector circuit to detect at least one of the continuous current imbalance in the sense coil or a ground fault current imbalance.Type: ApplicationFiled: October 24, 2007Publication date: May 8, 2008Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Artur J. Lewinski, Ross Teggatz, Thomas Edward Cosby