Integrated level sensing printed circuit board
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United States of America Patent
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Jun 27, 2017
Grant Date -
Nov 15, 2012
app pub date -
May 13, 2011
filing date -
May 13, 2011
priority date (Note) -
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Abstract
A level sensing circuit board featuring at least one processor and at least one memory including computer program code, where the at least one memory and computer program code are configured, with the at least one processor, to cause the apparatus at least to: respond to a signal containing information related to the electrical conductivity of a material causing a stimulus to a sensing plate that corresponds to a positive plate of a capacitor directly connected to an input of a comparator that forms part of a variable frequency oscillator; and determine a proportional response containing information about the material causing the stimulus to the sensing plate based at least partly on the signal received. The level sensing circuit may be used as a means to turn a pump on or off based on a sensed fluid level.
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