Please download the dossier by clicking on the dossier button x
×

Low Voltage Power Supply for Spark Igniter and Flame Sense

  • US 20100061034A1
  • Filed: 09/11/2008
  • Published: 03/11/2010
  • Est. Priority Date: 09/11/2008
  • Status: Active Grant
First Claim
Patent Images

1. A power supply circuit for use with intermittent pilot and direct spark ignition systems for gas burners, comprising:

  • a low voltage DC power source;

    a resonant circuit coupled to the power source, the resonant circuit including as an inductive element thereof a primary coil of a transformer;

    an electronic switching circuit coupled in series with the resonant circuit;

    a control circuit operatively coupled to the switching circuit to control switching thereof, the control circuit utilizing a low duty cycle control signal to control switching of the switching circuit; and

    wherein the transformer includes a first secondary coil coupled to a flame sense electrode and flame sense circuit; and

    wherein the transformer includes a second secondary coil coupled through a voltage doubler circuit to a spark capacitor in parallel with a primary coil of a step-up transformer and trigger circuit, the secondary coil of the step-up transformer being coupled to a spark electrode.

View all claims
  • 13 Assignments
Timeline View
Assignment View
    ×
    ×