Exercise 2.9 If an amplifier circuit has the function Vout= 27V +20 V, what is the gain of the amplifier?

1. Assume that the gm of Q, is 1500 umhos for the amplifier in the following figure. a. Compute. b. If gm = 1500 umho, what is the voltage gain? What is You? d. What is the purpose of C₂? What happens if it is open? C. V 200 mV pp 10 kHz HI 0.1 μF WI Ra 1.0 MO +VDD +15 V RD 6.2 k0 C3 -EE -15 V 9₂₁ 2N5458 l₂ 2N3904 RE 15 ΚΩ 0.1 μF 22 μF

VoD +12 V For the circuit of the adjacent figure a) Given that Ip = 2.83 mA, VGS(om=-7 V and Ipss = 8 mA , find VDs and VGs.. b) If a 50 mV rms input signal is applied to the amplifier, what is the peak-to-peak output voltage? gm = 5000 µS. c) Calculate the output resistance. %3D Ro 10AF 0.1 uF R 10 L. Ra 10 MA 10kn ID= 2.83 mA, Vas (Oef)=-7V. %3D

Q4: Consider the uA741C-based op-amp amplifier circuit shown below; The input voltage, Vi, is 2.5 volts. R2 is 5,000 ohms and RI is 1,000 ohms : R2 vo • What is the name of the circuit? • What is the value of the voltage at the negative input of the op-amp? • What is the value of the current through the 1 k2 resistor, in?