Simple Voltage Amplifier

Voltage amplifier is used to strengthen the input voltage. Voltage gain is the ratio of output voltage with input voltage. Where can we set the gain. Did this voltage amplifier applications? Alredy understand , Voltage amplifier can be used before the filter and power amplifier between the input signal and speaker. Remember again telecommunication engineering materials where the voltage amplifier is represented as a repeater in the process of data transmission.

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