What is the need of a power amplifier ? Differentiate between a power…
Previous year question for ANALOG ELECTRONICS.
Question
What is the need of a power amplifier ? Differentiate between a power amplifier and a voltage amplifier. Draw the transformer coupled Audio power Amplifier and explain its operation. Prove that the max. conversion efficiency in class A amplifier is 50%.
A transistor supplies 2 W for a 5 k$\Omega$ load. The zero signal dc current is 35 mA and it rises to 40 mA, when the signal is applied. Determine the %age 2nd harmonic distortion.
- Year: 2022
- Subject: ANALOG ELECTRONICS