Patents Assigned to GRECO TECH INDUSTRIES INC.
  • Patent number: 9338853
    Abstract: An LED lamp tube and driver circuit that is direct replacement for fluorescent tubes with or without ballasts, that works with standard AC high voltage current input, with high frequency pulse current input, or with lower voltage input. The tube is wired to receive the current that is input from any two electrode pins from among the pairs of pins at the ends of the tube, which house the driver circuitry. The input current is converted to DC through a rectifier circuit, is filtered of unwanted frequencies and voltage through a filter circuit, and is controlled with a step-down constant current circuit to drive an LED array within the tube.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: May 10, 2016
    Assignee: Greco Tech Industries Inc.
    Inventor: Luo Hua Guang
  • Publication number: 20160081147
    Abstract: An LED lamp tube and driver circuit that is direct replacement for fluorescent tubes with or without ballasts, that works with standard AC high voltage current input, with high frequency pulse current input, or with lower voltage input. The tube is wired to receive the current that is input from any two electrode pins from among the pairs of pins at the ends of the tube, which house the driver circuitry. The input current is converted to DC through a rectifier circuit, is filtered of unwanted frequencies and voltage through a filter circuit, and is controlled with a step-down constant current circuit to drive an LED array within the tube.
    Type: Application
    Filed: September 17, 2014
    Publication date: March 17, 2016
    Applicant: GRECO TECH INDUSTRIES INC.
    Inventor: Luo Hua GUANG