Relay-mod method to drive corona ignition system
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United States of America Patent
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Jun 5, 2018
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app pub date -
Dec 12, 2014
filing date -
Dec 12, 2013
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Abstract
A corona ignition system for maintaining a drive frequency approximately equal to the resonant frequency of a corona igniter is provided. The system includes a current sensor, at least two cascaded timers which are electrically independent of a controller, and at least two switches. During operation, the current sensor measures the current at an input of the corona igniter. A conditioned current signal including information related to the zero crossings of the current ultimately activates a pair of the timers which in turn control and drive one of the switches. The conditioned current signal is not processed by the controller before driving the switch.
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