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description of comparator
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COMPARATOR

Voltage comparator circuit is an example of open loop configuration of Op-Amp. The input signal is applied to the non inverting terminal of the op amp. The reference voltage applied at the inverting terminal of the op amp.

If Ein > Vref then output of the comparator = +ve supply voltage.

If Ein < Vref then output of the comparator = -ve supply voltage.

In our project, Ein = input signal

Vref = 0.45 volt.

+ve supply voltage = +5V

-ve supply voltage = ground.