Patents Assigned to Quest Electronics Limited
  • Ultra-low noise mains DC power supply
    Patent number: 11190018
    Abstract: A mains DC power supply comprising a buffer amplifier, in which a battery is used to provide a reference voltage for the buffer amplifier. The battery voltage reference is disconnected from the buffer amplifier, to prevent excessive dissipation of the battery, when the mains AC supply is in the switched-off state. The use of a battery voltage reference produces a DC power supply, from the mains AC supply, with an ultra-low level of subsonic and audio frequency noise.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: November 30, 2021
    Assignee: Quest Electronics Limited
    Inventor: Tom Alexander Paston Bacon
  • Ultra-Low Noise Mains DC Power Supply
    Publication number: 20190379206
    Abstract: A mains DC power supply comprising a buffer amplifier, in which a battery is used to provide a reference voltage for the buffer amplifier. The battery voltage reference is disconnected from the buffer amplifier, to prevent excessive dissipation of the battery, when the mains AC supply is in the switched-off state. The use of a battery voltage reference produces a DC power supply, from the mains AC supply, with an ultra-low level of subsonic and audio frequency noise.
    Type: Application
    Filed: May 31, 2019
    Publication date: December 12, 2019
    Applicant: Quest Electronics Limited
    Inventor: Tom Alexander Paston Bacon