So I needed an over discharge battery protection and I've built something like this: [image] However something is wrong with this hystereses calculation. The voltage I get to the positive input isn't the total voltage divided by 4. To add it I used this calculator: http://www.daycounter.com/Calc…

LM393 Positive Hystereses Calculation

Jabberwock October 10, 2017, 5:28pm 7

How did you calculate that? I want it to trip at 13.3V and 12.8V.

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