A Class B amplifier, as shown in Figure QI(b), is operated at maximum power conversion efficiency. Each transistor has maximum power dissipation rated at Pomar) · 2W, but for safety, the amplifier is operated so as not to exceed 75% of this value. Given Vec = + 8 V. For all transistors, you may neglect Vag and Vezay in your calculations. For a sinusoidal output signal without clipping, determine the following. (ь) (6) The smallest value of load resistance Rz that can be connected to the output of the amplifier. (i) For the resistance in part (i), find the average and maximum collector current of cach transistor. This assessment consists of 2 questions on 4 printed pages. UEEA1333 ANALOGUE ELECTRONICS QI. (Continued) RE Vec Figure QI(b)

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A Class B amplifier, as shown in Figure QI(b), is operated at maximum power
conversion efficiency. Each transistor has maximum power dissipation rated at Pomar)
· 2W, but for safety, the amplifier is operated so as not to exceed 75% of this value.
Given Vec = + 8 V. For all transistors, you may neglect Vag and Vezay in your
calculations. For a sinusoidal output signal without clipping, determine the following.
(ь)
(6)
The smallest value of load resistance Rz that can be connected to the output of
the amplifier.
(i) For the resistance in part (i), find the average and maximum collector current of
cach transistor.
This assessment consists of 2 questions on 4 printed pages.
UEEA1333 ANALOGUE ELECTRONICS
QI. (Continued)
RE
Vec
Figure QI(b)
Transcribed Image Text:A Class B amplifier, as shown in Figure QI(b), is operated at maximum power conversion efficiency. Each transistor has maximum power dissipation rated at Pomar) · 2W, but for safety, the amplifier is operated so as not to exceed 75% of this value. Given Vec = + 8 V. For all transistors, you may neglect Vag and Vezay in your calculations. For a sinusoidal output signal without clipping, determine the following. (ь) (6) The smallest value of load resistance Rz that can be connected to the output of the amplifier. (i) For the resistance in part (i), find the average and maximum collector current of cach transistor. This assessment consists of 2 questions on 4 printed pages. UEEA1333 ANALOGUE ELECTRONICS QI. (Continued) RE Vec Figure QI(b)
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