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Feedback on "14.2 TI Precision Labs - Op Amps: Comparator Applications 2

Hi,

First of all I would like to take a moment to appreciate the efforts of TI members for creating such insightful opamp precision lab series.

For comparator section video 2 (pdf page 10) in hysteresis design for no-inverting comparator configuration the formula for calculating feedback resistor (R4) seems to have an extra term (-1) inside the bracket (shown below)

R4=R3(((Vomax-Vomin)/VHYST )−1)

But as per my derivation using principles explained in the video I got R4=R3(((Vomax-Vomin)/VHYST ) . Please check and provide the correct derivation in case I have missed something.

1 Reply

  • Ankur
    Thanks for your post. As we are on break for the holiday, we will review the equation and get back to you as soon as possible during the first week of January.
    Chuck

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