Patents by Inventor Roshan Thakur

Roshan Thakur 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: 9036314
    Abstract: A computing device including a power connector to interface with a power source, logic and power components on a current path from the power connector; the power connector providing electrical power to the logic and power components, and an inrush protection circuit on the current path between the power connector and the logic and power components, the inrush protection circuit including: a first power dissipation device and a second power dissipation device arranged in parallel on the current path, a feedback loop to detect an amount of current in the current path and to control the first power dissipation device to operate in a manner to dissipate detected inrush current, and a first time delay network in communication with the second power dissipation device and causing a delay for the second power dissipation device to transition to an on state, wherein during steady state.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: May 19, 2015
    Assignee: NetApp, Inc.
    Inventors: Takashi Kanamori, Roshan Thakur
  • Publication number: 20130286525
    Abstract: A computing device including a power connector to interface with a power source, logic and power components on a current path from the power connector; the power connector providing electrical power to the logic and power components, and an inrush protection circuit on the current path between the power connector and the logic and power components, the inrush protection circuit including: a first power dissipation device and a second power dissipation device arranged in parallel on the current path, a feedback loop to detect an amount of current in the current path and to control the first power dissipation device to operate in a manner to dissipate detected inrush current, and a first time delay network in communication with the second power dissipation device and causing a delay for the second power dissipation device to transition to an on state, wherein during steady state.
    Type: Application
    Filed: April 27, 2012
    Publication date: October 31, 2013
    Applicant: NetApp, Inc.
    Inventors: Takashi Kanamori, Roshan Thakur
  • Patent number: 8400745
    Abstract: A fuse apparatus for protecting a device and a load coupled to the device may include a switch. The switch may be configured to interrupt current to protect a device and a load coupled to the device. A fuse apparatus may include a current sensor which may be coupled to a controller. The controller may control the switch to interrupt current to protect a device when current exceeds a threshold current. Additionally, a fuse apparatus may include a voltage sensor coupled to the controller. The controller may control the switch to interrupt current to protect a load when an output voltage of the device exceeds a threshold voltage.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: March 19, 2013
    Assignee: NetApp, Inc.
    Inventors: Zoltan Zansky, Roshan Thakur
  • Patent number: 8084885
    Abstract: A turbo compounding system may include a turbo generator having a switched reluctance machine having at least one pole-matched rotor and stator pair, a single phase inverter coupled to the turbo generator and further coupled to a direct current link, an inverter coupled to the direct current link, a motor generator coupled to the inverter.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: December 27, 2011
    Assignee: NetApp, Inc.
    Inventors: Zoltan Zansky, Roshan Thakur
  • Patent number: 7952488
    Abstract: A method and system for monitoring latent faults in power supplies may include a variable voltage source and a logic module that may be coupled to an OR FET circuit. The monitoring system may also include comparators for measuring a voltage drop across a FET and, based upon a value of the voltage drop, may determine a latent fault, such as a short circuit or open circuit across the FET.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: May 31, 2011
    Assignee: NetApp, Inc.
    Inventors: Zoltan Zansky, Roshan Thakur
  • Patent number: 7952231
    Abstract: The present disclosure is a supplemental power system which may operate in conjunction with a power supply to provide supplemental power to a load. Supplemental power system may include a power storage device, a boost converter and a power storage charger. Supplemental power system may supply extra power required for a storage system load at startup whereby the power supply system may be sized for steady state operation of the load.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: May 31, 2011
    Assignee: NetApp, Inc.
    Inventors: Zoltan Zansky, Bill Jacobsen, Roshan Thakur
  • Patent number: 7791914
    Abstract: A system for converting alternating electrical current to direct electrical current may include an input supply for supplying alternating electrical current. The input supply may be connected to a rectifier. The rectifier may be configured as a body diode. A comparator may be coupled to the rectifier. The comparator may apply a voltage to the rectifier when the input supply is operating.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: September 7, 2010
    Assignee: Network Appliance, Inc.
    Inventors: Roshan Thakur, Zoltan Zansky
  • Publication number: 20100066171
    Abstract: A multiple power source power supply may include multiple power sources fed by separate power sources. A multiple power source power supply may also include a first power factor correction circuitry and a second power factor correction circuitry. A multiple power source power supply may also include a single converter. A plurality of multiple power source power supplies may be combined to provide a cost and energy efficient power supply system.
    Type: Application
    Filed: September 16, 2008
    Publication date: March 18, 2010
    Applicant: NETAPP, INC.
    Inventors: Roshan Thakur, Zoltan Zansky