State the need and types of amplifier coupling.

State the need and types of amplifier coupling. 
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1 Answer

Answer :

Need of amplifier coupling: 1.When ever large amplifier with very good impedance matching is required, a signal stage amplifier circuit will not able to amplify the signal to a large extent. 2.Thus, a number of stages are required for amplification, for this output of the firststage is connected to the input of the second stage, this is called as cascade system or multistage system. 3.The connection of output first stage to the input second stage is called coupling. 4.In case of a multistage system, the very good coupling is very essential, or else there will be a large number of losses at the output.

Types of amplifier coupling:

1.R-C coupled amplifier

2.Transformer coupled amplifier

3.Direct coupled amplifier

4. Inductance (LC) coupling

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