Patents by Inventor Ashwani Guleria

Ashwani Guleria 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).

  • CIRCUITS FOR PHASE-CUT ANALOG DIMMING OF SOLID STATE LIGHT SOURCES
    Publication number: 20170118819
    Abstract: Circuits to provide phase-cut analog dimming of solid state light sources are presented. Each circuit comprises an anchoring circuit to communicate with a dimming controller circuit, the anchoring circuit having a proportional direct current (DC) voltage input, a biasing voltage input, a connection to a ground reference, and an output in communication with a dimming controller circuit. The anchoring circuit provides a reference voltage to permit phase cut dimming to be operable at a plurality of line voltages.
    Type: Application
    Filed: January 3, 2017
    Publication date: April 27, 2017
    Applicant: OSRAM SYLVANIA Inc.
    Inventors: Chaim Becerra, Biju Antony, Ashwani Guleria
  • Circuits for phase-cut analog dimming of solid state light sources
    Patent number: 9538610
    Abstract: Circuits to provide phase-cut analog dimming of solid state light sources are presented. Each circuit comprises an anchoring circuit to communicate with a dimming controller circuit, the anchoring circuit having a proportional direct current (DC) voltage input, a biasing voltage input, a connection to a ground reference, and an output in communication with a dimming controller circuit. The anchoring circuit provides a reference voltage to permit phase cut dimming to be operable at a plurality of line voltages.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: January 3, 2017
    Assignee: OSRAM SYLVANIA Inc.
    Inventors: Chaim Becerra, Biju Antony, Ashwani Guleria
  • CIRCUITS FOR PHASE-CUT ANALOG DIMMING OF SOLID STATE LIGHT SOURCES
    Publication number: 20150296591
    Abstract: Circuits to provide phase-cut analog dimming of solid state light sources are presented. Each circuit comprises an anchoring circuit to communicate with a dimming controller circuit, the anchoring circuit having a proportional direct current (DC) voltage input, a biasing voltage input, a connection to a ground reference, and an output in communication with a dimming controller circuit. The anchoring circuit provides a reference voltage to permit phase cut dimming to be operable at a plurality of line voltages.
    Type: Application
    Filed: April 8, 2015
    Publication date: October 15, 2015
    Applicant: OSRAM SYLVANIA Inc.
    Inventors: Chaim Becerra, Biju Antony, Ashwani Guleria
  • Latching circuit for ballast
    Patent number: 8729817
    Abstract: A ballast including a latching circuit is provided. The ballast includes an inverter circuit for providing an oscillating voltage signal to energize a lamp set, a control circuit for controlling operation of the inverter circuit, and a voltage supply circuit for providing a supply voltage to the control circuit. The ballast also includes a fault detection circuit for detecting a fault condition and a latching circuit connected to the fault detection circuit. The latching circuit is configured to drain the supply voltage and thereby disable the control circuit so that operation of the inverter circuit is discontinued during a fault condition.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: May 20, 2014
    Assignee: OSRAM SYLVANIA Inc.
    Inventors: Ashwani Guleria, Ashish Kumar Gupta
  • LATCHING CIRCUIT FOR BALLAST
    Publication number: 20140111089
    Abstract: A ballast including a latching circuit is provided. The ballast includes an inverter circuit for providing an oscillating voltage signal to energize a lamp set, a control circuit for controlling operation of the inverter circuit, and a voltage supply circuit for providing a supply voltage to the control circuit. The ballast also includes a fault detection circuit for detecting a fault condition and a latching circuit connected to the fault detection circuit. The latching circuit is configured to drain the supply voltage and thereby disable the control circuit so that operation of the inverter circuit is discontinued during a fault condition.
    Type: Application
    Filed: October 23, 2012
    Publication date: April 24, 2014
    Applicant: OSRAM SYLVANIA INC.
    Inventors: Ashwani Guleria, Ashish Kumar Gupta