AMPLIFIER:
The circuit which produces the output as twice or increase than the input signal than the circuit is called amplifier.
(or)
The circuit which produces the output as higher signal strength than the input signal strength than the circuit is called as amplifier.
From the circuit,the circuit consists of input between +1v to -1v.But it produces the output between 4v to 10v.so,the circuit is proved it is an amplifier.The circuit diagram consists of single amplifier(transistor) ,therefore it is called as single stage amplifier.
