It is required to determine the derivations to prove that of the power supply is dissipated by the transistor itself.
The reference figure is as shown in Figure 1.
Figure 1: Half circuit for class B amplifier
Here, it is required to determine efficiency of class A amplifier
Power delivered to the matching network is determined as follows:
Output resistance of is .
For impedance matching,
Power delivered can be determined as follows:
Total power of the circuit is determined as follows:
The percentage change is given by an expression as follows:
Thus, of the power supply is dissipated by itself.