Dual Comparator Circuit with LM393

2016-02-24 21:35

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A comparator circuit proves quite useful, if you want to derive a digital signal from some analog input.

The one in the test circuit above, is made from one LM393 dual differential comparator IC.

What is different, is how the reference values are set by the 10k poties.

The oscilloscope on the right side shows the effect in the simulation (remeber the invers logic!):

See how the RPM sensor signal for R1 was improved using this circuit.