In the figure the ideal batteries have emfs E1 = 4.89 V and E2 = 10.2 V, the resistances are each 2.41 Ω, and the potential is defined to be zero at the grounded point of the circuit. What are potentials (a) V1 and (b) V2 at the indicated points? (a) Number Units (b) Number Units
Q3. Figure Q3 shows a single-stage amplifier with current mirror biasing. For the two p channel MOSFETs, VTHPI = VTHP2 = −1 V, λPI = λP2 = 0, Kp, MI = Kp, M2 = 2 mAV−2. For the pnp BJT, β = 100, VA = 100 V. Fig. Q3 (a) Design RREF such that ID, MI = 1 mA. [Ans: RREF = 8.29 kΩ ] (b) Calculate the small signal parameters of Q1, i. e., gm,Q1, rπ,Q1 and ro,Q1. [Ans: gm, QI = 40 mA/V, rπ,Q1 = 2.5 kΩ, ro,Q1 = 100 kΩ ] (c) Identify the configuration of the single-stage amplifier. (d) Determine the parameters, Gm, Rin and Rout of the two-port network of the amplifier. (e) Determine the gain vo/vs of the amplifier using the 2-port network parameters derived in part (d). [Ans: vo/vs ≈ −180]