Patents Assigned to Upright Lighting LLC
  • Filter for lamp
    Publication number: 20160066370
    Abstract: The invention is a lamp filter composed of reference, error amplifier, feedback and controlled component to remove ripple or noise from power supply to lamp.
    Type: Application
    Filed: August 29, 2014
    Publication date: March 3, 2016
    Applicants: Upright Lighting LLC, XI'AN Upright Photoelectric Technology Co., Ltd
    Inventor: WEI ZHAO
  • Switching power supply with power feedback to keep lamp's brightness constant
    Patent number: 8659238
    Abstract: A power supply and methods are provided. In one implementation, the power supply includes a switching converter with power feedback circuit to output constant power to keep lamp at constant brightness. The power feedback circuits include a current feedback circuit and a voltage feedback circuit. The power supply further includes a controller operable to adjust on time or duty cycle of main switch to keep the output power constant.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: February 25, 2014
    Assignees: Xi' An Upright Photoelectric Technology Co., Ltd, Upright Lighting LLC
    Inventor: Liang Chen