This is due to the feedback being negative in value. The equation for the output voltage Vout also shows that the circuit is linear in nature for a fixed amplifier gain as Vout = Vin x Gain. This property can be very useful for converting a smaller sensor signal to a much larger voltage.
What is the formula of amplifier?
Formulas used:
Voltage gain of amplifierAV=V0Vi , or this can be interpreted as the ratio between the input voltage and the output voltage of the circuit.
What is voltage in amplifier?
A voltage amplifier is the one that produces an output signal with increased voltage level when a low voltage signal is input to it. A voltage amplifier is used in such applications where we need signal transmission at higher voltage through a long wire.