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In electronics, a push–pull amplifier is primarily classified as which type of amplifier?

Difficulty: Easy

Correct Answer: power amplifier

Explanation:


Introduction / Context:
A push–pull amplifier is widely used in audio systems and RF transmitters. It consists of two active devices operating in opposite half-cycles of the input waveform.


Given Data / Assumptions:

  • Classified by its output function.
  • Push–pull design reduces distortion and improves efficiency.


Concept / Approach:
The purpose of push–pull is to deliver significant power to a load, hence it is a power amplifier. Voltage or current amplifiers deal with small signal conditioning, not direct load driving.


Step-by-Step Solution:

Two transistors (NPN and PNP or MOSFET pairs) amplify alternate halves of the waveform.When combined, they produce a larger output signal with reduced harmonics.This makes it efficient for delivering power to speakers or loads.


Verification / Alternative check:
Datasheets and textbooks define push–pull amplifiers under “power amplifier” categories.


Why Other Options Are Wrong:

Voltage amplifier: small-signal stages, not output stage.Current amplifier: specialized, not the push–pull use.None of the above: incorrect, it clearly belongs to power class.


Common Pitfalls:

Confusing “signal amplifier” role with final power delivery.


Final Answer:

power amplifier
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