Consider the circuit shown in Figure P 11.47 . Assume that
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Microelectronics: Circuit Analysis and Design
- Ex. 1780. A closed-loop system has sustained oscillations (i.e. constant amplitude) with a period of 85 seconds when the gains are: proportional=96, integral=0, and derivative=0. Determine the ideal- PID gains Kp, Ki (minutes^-1), Kd (minutes) using the Ziegler-Nichols method. Also determine the standard-PID values which are commonly used in industry, such as LabVIEW: Kc, Ti (min), Td (min). ans:6arrow_forwardThe ac equivalent circuit for an amplifier is. Assume the capacitors have infinite value, RI = 10 kΩ, RB = 5 MΩ, RC = 2 MΩ, and R3 = 3.3 MΩ. Calculate the voltage gain for the amplifier if the BJT Q-point is (1 μA, 1.5 V). Assume βo = 40 and VA = 50 V. Rework the given problem if IC is increased to 10 μA, and the values of RC, RB, and R3 are all reduced by a factor of 10.arrow_forwardIn the circuit in the figure, Vcc = 18 V and RL = 2.2 kΩ, while C1 = C2 = CE = 0.1 μF. It is also known that for parasitic and wiring capacitors, Cwi = 15 pF, Cwo = 21 pF, Cbc = 27 pF, Cbe = 887 pF and Cce = 25 pF. Accordingly, what is the bandwidth of the system? NOTE-1: The output impedance of the transistor r0 will be neglected in the calculations. NOTE-2: The high frequency dependence of hfe, β, will be neglected.arrow_forward
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- Please answer correctly and as soon as possible. I'll give upvote. Thank you. In the common emitter amplifier given, R1=50Ω, R2=1kΩ and CL=1pF. Determine the quiescent collector current, ICQ, needed such that the unity gain frequency, fu, is equal to 2.4 GHz. Show the complete solution and state all assumptions. The BJT parameters are as follows: β→∞,VA→∞, and Cπ=50 femtofarad (fF). Ignore all other parasitic capacitances and use VT=26mV.arrow_forwardWhat is the minimum bandwidth of the pnp current mirror as shown if IS = 80 μA, βo = 50, VA = 60 V, fT = 50 MHz, Cμ = 2.5 pF, and AE2 = AE1?arrow_forwardFor the NMOSFET in the circuit below, K = 4.00mA/V^2, VTHN = 1.00V, l = 0V^-1, and VIN = 4.00V.a. Solve for IDS and VOUT and verify any assumptions you made. b. Derive an equation for the small signal gain of the circuit, vout / vin as a function of the vin radian frequency, w.arrow_forward
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