● ● ● ● Describe the circuit (1) By inserting a capacitor between the two stages, what is achieved? (1) Why a capacitor? (1) What is the ideal amplifier model? (1) • Describe how it simplifies circuit analysis. (2) Describe how you would calculate the gain of each amplifier stage? (1) + Vil • Describe how you calculate the overall gain? (1) Does the cascading of multiple amplifiers improve overall amplifier design? (1) Explain? (1) in Amplifier 1 CE BJT Rin1 = 53092 Avoc1 = -160 Rout1 = 1 k iol = 1;2 Vol = V₁2 Amplifier 2 CC BJT Rin2 = 36.5 k Avoc2 = 0.99 Rout2 = 5092 102 Vo2

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Differential amplifier

There are two amplifying stages with common degeneration in a differential amplifier.