Af Amplifier Block Diagram. Here we are taking an example of a loudspeaker. In all practical amplifiers a number of stages are cascaded to amplify a weak signal to a sufficient level to operate the output device.

Aerial picks up radio signals from many stations. 2 5w 2 stereo amplifier. The power supply not shown is connected to the audio amplifier block.

The frequency distortion is very low and bandwidth is also low nearly 1 of the selected frequency.

But abnormal and spontaneous activity may be distinguished by the sudden change in sound and this can be analyzed by the physician. The amplifier circuit diagram shows a 2 5w 2 stereo amplifier. The frequency distortion is very low and bandwidth is also low nearly 1 of the selected frequency. You only need a few capacitors to make a decent stereo amplifier out of it.