METHOD TO MEASURE HIGH VOLTAGES ACCURATELY
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United States of America
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Issued Date -
Apr 10, 2025
app pub date -
Oct 5, 2023
filing date -
Oct 5, 2023
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Abstract
A monitoring circuit includes a digital to analog converter (DAC) circuit; a reference circuit configured to produce multiple reference levels; a resistive divider circuit including a first terminal coupled to the output of the DAC circuit, a second terminal coupled to the reference circuit, and an output terminal to provide a measurement voltage; and a measurement circuit. The measurement circuit is configured to apply a first reference level to the second terminal of the resistive divider circuit and measure a first measurement voltage at the output terminal of the resistive divider circuit; apply a second reference level to the second terminal of the resistive divider circuit and measure a second measurement voltage at the output terminal of the resistive divider circuit; and calculate the DAC circuit output level using the first and second reference levels, and the first and second measurement voltages.
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