When is the maximum efficiency of class B amplifier achieved?(a) When VMAX = VCC(b) When two transistors are used(c) When VMIN = 0(d) Efficiency is always constantThe question was posed to me during a job interview.My question is from Push-Pull Class B Amplifier in chapter Power Amplifier of Analog Circuits

When is the maximum efficiency of class B amplifier achieved?(a) When

1.	When is the maximum efficiency of class B amplifier achieved?(a) When VMAX = VCC(b) When two transistors are used(c) When VMIN = 0(d) Efficiency is always constantThe question was posed to me during a job interview.My question is from Push-Pull Class B Amplifier in chapter Power Amplifier of Analog Circuits
Answer» RIGHT option is (C) When VMIN = 0 Explanation: Efficiency % = [1-VMIN/VCC] x 78.5 Maximum efficiency OCCURS when VMIN=0 and efficiency is 78.5%.

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