Amplifier To Block Diagram. The power amplifier is concerned with driving the load which is usually a loudspeaker. Here we will modulate the strength of the voice so it is voice amplification.

Connect the circuit diagram as in the one marked with amplifier with gain 20 and you get 20 fold the signal. Then i could just use a differential amplifier that verifies the transfer function i wrote in my edit. If you need exactly 6 you can play a round with the resistance on the input.

Block diagrams are used to understand and design complete circuits by breaking them down into smaller sections or blocks.

Circuit diagram of a three stage practical audio power amplifier is shown in the figure below. Connect the circuit diagram as in the one marked with amplifier with gain 20 and you get 20 fold the signal. So don t i have to have another physical element at the opamp output giving me that gain. Here we will modulate the strength of the voice so it is voice amplification.