7.135 For the emitter follower in Fig. P7.135, the signal source is directly coupled to the transistor base. If the dc component of vsig is zero, find the dc emitter current. Assume β =100. Neglecting ro, find Rin, the voltage ...

7.33 Figure P7.33 shows a discrete-circuit amplifier. The input signal vsig is coupled to the gate through a very large capacitor (shown as infinite). The transistor source is connected to ground at signal frequencies via a very large capacitor (shown ...

4.4 In each of the ideal-diode circuits shown in Fig. P4.4(a), (b), (c), (d), (e), (f), (g), (h), (i), (j), and (k), vI is a 1-kHz, 5-V peak sine wave. Sketch the waveform resulting at vO. What are its positive ...

7.88 For the general amplifier circuit shown in Fig. P7.88 neglect the Early effect. (a) Find expressions for vc/vsig and ve/vsig. (b) If vsig is disconnected from node X, node X is grounded, and node Y is disconnected from ground ...

*2.68 (a) Find Ad and Acm for the difference amplifier circuit shown in Fig. P2.68. (b) If the op amp is specified to operate properly as long as the common-mode voltage at its positive and negative inputs falls in the range ...

*9.23 Figure P9.23 shows a circuit for a differential amplifier with an active load. Here Q1 and Q2 form the differential pair, while the current source transistors Q4 and Q5 form the active loads for Q1 and Q2, respectively. The ...

7.130 The amplifier of Fig. P7.130 consists of two identical common-emitter amplifiers connected in cascade. Observe that the input resistance of the second stage, Rin2, constitutes the load resistance of the first stage. (a) For VCC = 15 V, R1 = ...