Patent ID: 9309857
Filing Date: 2016-04-12
CPC Classification: F02P

Claim Text:
1. A spark ignition system comprising: a comparator to compare a first voltage set point and a feedback value to output a difference value; a controller to receive the difference value of the comparator to generate a correction signal; a pulse width modulation (PWM) circuit coupled to the controller to receive the correction signal and configured to generate an output voltage level; a DC/DC voltage converter coupled to receive the output voltage level from the PWM circuit and configured to generate a regulated flame sense and spark voltage; a flame sense circuit coupled to receive the regulated flame sense and spark voltage and configured to detect a status of a burner flame, the flame sense circuit to output a sensed flame signal to the controller; a feedback circuit coupled to receive the regulated flame sense and spark voltage and generate the feedback value representative of a current regulated flame sense and spark voltage level for output to the comparator; and a second voltage converter coupled to the controller and coupled to receive the regulated flame sense and spark voltage, the second voltage converter to output an increased corresponding voltage for a spark igniter, the controller to regulate the regulated flame sense and spark voltage to a prescribed level.