Advantages and disadvantages of transformer coupled amplifier

There are some advantages of transformer coupled amplifier which are given below,

  • The transformer coupled amplifier provides a higher voltage gain than that of R.C. coupled amplifier.
  • There is loss of signal power in the collector or base resistors because the DC resistance of the primary winding is very low.
  • It gives an excellent impedance matching between the stages.

There are some disadvantages of transformer coupled amplifier which are given below,

  • It has poor frequency response.
  • It introduces frequency distortion when used at radio frequencies.
  • The coupling transformer is expensive, bulky and large when used at audio frequencies.
  • The transformer introduces losses in the form of copper loss, eddy current loss and hysteresis loss at high frequencies.

 

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