Electronic Devices - Power Amplifiers - Discussion

Discussion Forum : Power Amplifiers - General Questions (Q.No. 17)
17.
What is the maximum efficiency of a class A circuit with a direct or series-fed load connection?
90%
78.5%
50%
25%
Answer: Option
Explanation:
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Discussion:
1 comments Page 1 of 1.

Kodanda rao said:   6 years ago
The maximum efficiency of a series fed class A amplifier is thus seen to be 25%.

Since this maximum efficiency will occur only for ideal conditions of both voltage swing and current swing, most series fed circuits will provide efficiencies of much less than 25%.

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