Patents by Inventor Vikram Madineni

Vikram Madineni 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).

  • AMPLIFICATION CIRCUIT AND HEAT SINK USED WITH A LIGHT EMITTING APPARATUS HAVING VARYING VOLTAGES
    Publication number: 20080315795
    Abstract: A light emitting apparatus for regulating a current output of an LED at predetermined value with a power source having a wide variety of voltages and chemistries is described. A light emitting diode is electrically coupled to the voltage source. A pulse width modulation controller controls a duty cycle of the voltage applied. A resistor electrically coupled between the voltage source and the light emitting diode is used to regulate output current for the LED. An amplification circuit is electrically coupled to the resistor and the pulse width modulation controller for supplying a feedback voltage to the pulse width modulation controller that is higher than a voltage measured across the resistor.
    Type: Application
    Filed: June 25, 2008
    Publication date: December 25, 2008
    Applicant: Ingersoll-Rand Company
    Inventors: Vikram Madineni, Jason Bartoszek