For the 2-stage amplifier below, assume that the transistors Beta is infinite for DC analysis and 99 for AC. Also, the DC Base-Emitter voltage is VBEI=0.7 V. a) Run a DC analysis and find the DC Collector voltages of Q2 and Q3 b) Find the overall voltage gain from the differential inputs to the output of the two stage amplifier c) Design a current source to replace the current source shown in the schematic (assume ideal components) +5 V 1-2 mA 2552 2582 www -vi/2 5k +vi/2 -5 V +5 V 23 2ΚΩ 1.3 ΚΩ -5V

For the 2-stage amplifier below, assume that the transistors Beta is infinite for DC analysis and 99 for AC. Also, the DC Base-Emitter voltage is VBEI=0.7 V. a) Run a DC analysis and find the DC Collector voltages of Q2 and Q3 b) Find the overall voltage gain from the differential inputs to the output of the two stage amplifier c) Design a current source to replace the current source shown in the schematic (assume ideal components) +5 V 1-2 mA 2552 2582 www -vi/2 5k +vi/2 -5 V +5 V 23 2ΚΩ 1.3 ΚΩ -5V

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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9. Design a biased-transistor circuit using VBB = Vcc= 10 V for a Q-point of Ic = 5 mA and VCE 4 V. Assume pc = 100. The design involves finding RB, RC, and the minimum power rating of the transistor. (The actual power rating should be greater.) Sketch the circuit.
The collector characteristics for a certain transistorare shown a. Find the ratio Ic/IB for VCE =10 V and IB =100,200, and 600 pA.b. The maximum allowable collector powerdissipation is 0.5 W for IB = 500 pA. Find VCE. Hint: A reasonable approximation for the power dissipatedat the collector is the product of the collector voltage andcurrent P = IcVCE, where P is the permissible powerdissipation, Ic is the quiescent collector current, and VCE iSthe operating point collector-emitter voltage.
The DC Current Gain of a Transistor is Select one: a. Ratio of Collector Current to Base Current b. Ratio of Base Current to Collector Current c. Ratio of Emitter Current to Collector Current d. Ratio of Base Current to Emitter Current
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Exersice 4: For the Darlington amplifier circuit used in an emitter-follower configuration appears in figure below: . Determine the dc levels of Vi, Ve, Vi, Ves, and Ver. . Find the currents I, Iz, and Irz. . Calculate Zi and Zo. . Determine the voltage gain Ay = Vo/Vi and current gain Ai=IL/l;. . Repeat parts 1 to 4 with a load resistor of 1.2 kQ. . Evaluate A = Vo/Vs if the source has an internal resistance of 1.2 kQ and the applied load is 10 kQ. omAwWNE 416V L i prammm, I Tour i,
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The amplifier in the circuit below is driven by a signal generator v, with a small sine wave signal vhose average value is zero. Assume the transistor has a value of B-100, and V-26 mV. a. You need to design the circuit so that the de emitter current IE of the emitter resistor RE to establish the desired de emitter current. = 1 mA. Specify the value b. A de collector voltage of +5 volts is desired. Specify the value of the collector resistor Re to establish the desired de collector voltage. For this part assume that RL 5 K and the Early Effect needs to be considered. The transistor has a VA 100 Volts. Draw the ac small signal equivalent circuit model of the amplifier and determine its voltage gain. 91SV C. 2.5k MM do RE -15 V 84 Vout RL
Can someone explain this problem to me. I don't know how to get to the answer that is given.
This problem is AC analysis problem. DC analysis is not needed to answer the question. A) Convert this bias circuit into a bypassed common emitter amplifier that has an output across a load resistor (RL). To do this you should draw three capacitors on the figure below, an input voltage source, and any resistors you think that should be added. B) In the space below the figure, Draw the hybrid t model for this amplifier circuit including all voltages and resistors. Label Vi, Vbe, and vo on the model. Assume the capacitors you add act as short circuits at AC. Be sure to include resistors R1, R2, R3, R4, and RL in the hybrid pi model. > When you "verify" a mode of operation you will need to calculate all three voltages (Vc, Ve, VE for BJTS and VG, Vs, Vo for MOSFETS) and show the correct two conditions are satisfied. > Assume Capacitors acts like open circuits at DC and short circuits for AC. 12V Assume the following: o Beta = 100 O VBE = 0.7 o V: (Thermal) = 26 mV o Vr (Threshold) = 2V O…
The small-signal model is said to be valid for voltage variations of about 5 mV. To what percentage current change does this correspond? (Consider both positive and negative signals.) What is the maximum allowable voltage signal (positive or negative) if the current change is to be limited to 10%?
Exercise 1:-
Common-gate MOSFET: 2.1 Consider the "common-gate amplifier" circuit shown in Figure 2. As- sume that the MOSFET operates under the saturation discipline. Rp V+ Vs Figure 2: a) Draw the SCS equivalent circuit by replacing the MOSFET by its SCS model. b) Determine vo and ip in terms of v, Rp, Vs, and the MOSFET parameters K and Vr. c) Determine the range of values of v for which the MOSFET operates under the saturation discipline. What is the corresponding range of vo? Note: SCS: switch current source.