Patents Examined by Matthew Grub
  • Start-up circuit to discharge EMI filter for power saving of power supplies
    Patent number: 8461915
    Abstract: A start-up circuit to discharge EMI filter is developed for power saving. It includes a detection circuit detecting a power source for generating a sample signal. A sample circuit is coupled to the detection circuit for generating a reset signal in response to the sample signal. The reset signal is utilized for discharging a stored voltage of the EMI filter.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: June 11, 2013
    Assignee: System General Corp.
    Inventors: Wei-Hsuan Huang, Meng-Jen Tsai, Chien-Yuan Lin, Ming-Chang Tsou, Chuan-Chang Li, Gwo-Hwa Wang