Reward Amplifier Block Diagram. Power amplifier and speaker blocks. The block diagram of the current shunt feedback amplifier is shown below by which it is apparent that the feedback circuit is located in shunt by means of the output as well as the input.

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Different power amplifier stages are shown in the block diagram below. Power amplifier and speaker blocks. Block diagram of audio amplifier system.

When the feedback circuit is allied in series through the o p however in parallel with the input then the o p impedance will be increased because of the parallel connection with the i p the i p impedance.

In all practical amplifiers a number of stages are cascaded to amplify a weak signal to a sufficient level to operate the output device. The block diagram of a lock in amplifier is shown in figure 1. 2 5w 2 stereo amplifier. Block diagram of audio amplifier system.