Question

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Questions 1-3 below are about the amplifier circuit of Figure 1. Here Vcc is a fixed voltage The base voltage vB(t) is time-varying, and is of the form vB(t) V(t) where VB is a DC offset, and vb(t) is a time-varying purely AC signal. Suppose the amplitude of vb is A. Assume that the capacitor C is sufficiently large so that it can be considered to be short at the signal frequencies . Rc, RE are known BE VBE(eat), and B1 in the active region BE(sat) and VcE(eat) are known Vcc Rc Vo UBO Figure 1: Circuit for Questions 1-3. For Questions 1-3 it might be useful to plot the emitter and collector voltages with time Question 1. In the amplifier circuit in Figure 1 assume further that the transistor remains in the active region at all times. Express the amplitude of vo in terms of A and the circuit parame ters. QUESTION 1 Find the answer to Question 1 (in volt) in the attached pdf file, where Vcc 20 volt VB 9 volt Rc 6.1 k-Ohm RE 1.6 k-Ohm A 1.1 volt VBE(sat) 0.6 volt VCE(sat) 0.2 volt Please round your answer to 3 decimal places.

Answer 1

Componenta Ve VBE Re as요 t-AxLD3 Ie 8.4 V Vobeuye at

Lo oob o Re R RetRL Bb Ret Ru 49-b 2 CPtD CtRe) 0% CYetRe

Ra Ru in, hud Then, output し80