Here the voltage follower gives the same output voltage as input voltage but it draws a low input current from the input source. We can calculate current, Voltage, and Resistance by using following ohm’s law. On the other hand, the output impedance is very low, and it will produce the same signal input, in the output The input impedance of operational amplifier IC 741 will be very high, sometimes the input impedance is much higher (up to 1MΩ) Due to the high input impedance we can apply weak signals across the input and a very low current will be drawn from the input source and then gives high current output to the load. As it’s a Unity gain amplifier means the gain of the amplifier will be 1 and whatever is fed as input, can be received as output. Bias pins are connected to the battery and the output is connected to the 1KΩ Load resistor.

By adjusting the potentiometer at the input, Vs can be varied to a different value in the range of 0-9Vdc.

As shown in the Circuit, variable input is given to the non-inverting (Pin3) terminal of the op-amp and the inverting (Pin2) terminal is given the negative feedback from the output (Pin6).

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