Patents Assigned to Greengage Lighting Limited
  • Patent number: 10433379
    Abstract: Several aspects of power distribution systems are described. One aspect relates to apparatus for providing a direct current to a load comprising one or more light emitting diodes. The apparatus comprises: a rectifier operatively connectable to a secondary winding of a transformer whose primary winding is for carrying a high-frequency alternating current; a first capacitor operatively connectable to the secondary winding; and a second capacitor operatively connectable, at least partly via the rectifier, to the secondary winding. The first and second capacitors together provide a reactance referred to the primary winding which substantially compensates for the reactance of the primary winding.
    Type: Grant
    Filed: May 12, 2018
    Date of Patent: October 1, 2019
    Assignee: Greengage Lighting Limited
    Inventor: Philip John Rimmer
  • Patent number: 10002702
    Abstract: A novel coupler, coupler housing and ferrite core and associated elements and concepts thereof and therefor for use in particular with an Inductive Power Transfer or Distributed Power System.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: June 19, 2018
    Assignee: GREENGAGE LIGHTING LIMITED
    Inventor: Philip John Rimmer
  • Patent number: 9992830
    Abstract: Several aspects of power distribution systems are described. One aspect relates to apparatus for providing a direct current to a load comprising one or more light emitting diodes. The apparatus comprises: a rectifier operatively connectable to a secondary winding of a transformer whose primary winding is for carrying a high-frequency alternating current; a first capacitor operatively connectable to the secondary winding; and a second capacitor operatively connectable, at least partly via the rectifier, to the secondary winding. The first and second capacitors together provide a reactance referred to the primary winding which substantially compensates for the reactance of the primary winding.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: June 5, 2018
    Assignee: Greengage Lighting Limited
    Inventor: Philip John Rimmer