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Class A amplifier:

Class A amplifier: . An amplifier with a transistor that conducts during the entire 360º of the input signal cycle. . Optimum class A operation is obtained by designing an amplifier so that its Q point is centered on the ac load line. Class A Relationships. Power Gain

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Class A amplifier:

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  1. Class A amplifier: An amplifier with a transistor that conducts during the entire 360º of the input signal cycle. Optimum class A operation is obtained by designing an amplifier so that its Q point is centered on the ac load line

  2. Class A Relationships • Power Gain • DC Quiescent Power • Output Power

  3. Class A Amplifier Efficiency Efficiency: The ratio of the signal power supplied to the load to the power drawn from the dc supply. By formula, The maximum efficiency of a capacitively coupled load is: In practice, the efficiency of a class A amplifier is usually around 10%. The low efficiency of class A power amplifiers limits their usefulness to small power applications that require only a few watts of load power.

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