Flame rectification circuit using operational amplifier
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United States of America Patent
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Jan 12, 2021
Grant Date -
May 3, 2018
app pub date -
Oct 31, 2016
filing date -
Oct 31, 2016
priority date (Note) -
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Abstract
A method for detecting a flame is provided. The method includes the step of providing alternating current to a flame rectification probe to produce a first voltage as an input for a sense circuit, wherein the flame rectification probe is placed in proximity to the flame. The method further includes the step of conditioning the first voltage using the sense circuit to produce a second voltage. Additionally, the method includes the steps of outputting the second voltage to a microcontroller, and determining with the microcontroller whether the flame is present based on a magnitude of the second voltage.
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