Patents Assigned to Micro Tech Limited
  • Patent number: 6124682
    Abstract: A lamp driver circuit for a discharge lamp in which a high frequency is used to initiate a discharge and a lower frequency is used to sustain the discharge. A tuned circuit boosts the voltage at the starting frequency. In addition, a transformer is connected to the tuned circuit to provide a further boost to the starting voltage. The transformer core may be made of a different material from that of the inductor of the tuned circuit, and is preferably selected to saturate during starting, to enhance the voltage spikes available for starting the lamp.
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: September 26, 2000
    Assignee: Micro Tech Limited
    Inventors: Richard Anthony Lakin, Isaac David Gurwicz