Hi,
any body can help me about the advantages and disadvantages and applicatioins of direct,capacitor, and transforner coupeled multistage amplifier. Please help me urgently. iut is my assignment and I have to submit it tomorrow. Ishall be thankful
ASP SIAL

 

"it is my assignment"
Yes, it is.

 

Transformers have not been used in audio power amplifiers for about 50 years.
They are big, heavy, expensive and have poor low frequency and high frequency response. They have distortion.

Most modern audio amplifiers are DC-coupled internally and have an input coupling capacitor. Some have an output coupling capacitor.

Here is one of the first transistor amplifiers.