Window Comparator Circuit

  
ICl-c functions as a noninverting comparator, and ICl-a operates as an inverting comparator. Potentiometer Rl and fixed resistors R2 and R3 form a divider chain that delivers slightly different voltages to the two comparators. These voltages define the upper and lower limits of the circuit`s switching window, which can be changed easily by varying R2 and R3.
Window Comparator Circuit - schematic

The LED glows only when the input voltage falls within the window region.




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