In the common emitter amplifier in Figure 1, R1 = 500, R2 = 1k2, and CL=1 pF. Determine the quiescent collector current, Ico, needed such that the unity gain frequency, fu = 1 GHz.Show your complete solution and state all your assumptions. R2 VOUT R1 VIN Figure 1 The BJT parameters are as follows: B- 0o, VA → o, and C = 50fF. Ignore all other parasitic capacitances and use Vr = 26mV.

In the common emitter amplifier in Figure 1, R1 = 500, R2 = 1k2, and CL=1 pF. Determine the quiescent collector current, Ico, needed such that the unity gain frequency, fu = 1 GHz.Show your complete solution and state all your assumptions. R2 VOUT R1 VIN Figure 1 The BJT parameters are as follows: B- 0o, VA → o, and C = 50fF. Ignore all other parasitic capacitances and use Vr = 26mV.

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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Vsis (~ Q3 (a) What is the advantage of using MOSFET as compared to BJT at the first stage of multi-stage amplifier? Rais 600 02 www Z₁ (b) Describe the function of the capacitor for the following condition: (1) (ii) SEEE/SKEE 1073 (c) The transistors parameters in Figure Q.3 are given as follow: BJT (iv) ↑ B-350, VBE 0.7 V, Ic=0.3 mA, VT 26 mV, and ro=00 E-MOSFETk 0.8 mA/V², VT- Vas(T) = 1 V C₁ HE a capacitor between stage 1 and stage 2 of a RC-coupled amplifier. bypass capacitor which is commonly used in small signal amplifier. (i) Draw the ac equivalent circuit at middle frequency for circuit in Figure Q.3 by using hybrid-x model. (ii) Determine the values of Z., Ziz and Zo. (iii) Calculate the gain, v/v, in decibel (dB). Draw and label the waveforms vo when v=2 sin 50t [mV] for one complete cycle. + Roi 50 ΚΩ Vi Ra 6 kn Ro 4.5 k Q₁ Rs 3 kQ C₂ не +15 V DS ↑ 22 R₁ 75 k R₂ 9 kn Figure Q.3 Multistage amplifier circuit Re RE 2kQ Rez 1kQ ← 2₂ -C₁ R₂ 20k2 %
Design a common-emitter amplifier to provide a small-signal voltage gain of approximately -10. 1. Consider the circuit shown in Figure 1. Show the following calculations in your notebook: Calculate a value for Rc so that A, z –10 Calculate values for R1 and R2 so that the circuit is bias stable and near the center of the load line. (Note: Use the datasheet for the 2N5209 transistor to make your calculations more accurate). Vcc = 10 V R1 Rc Cc2 Cci RL Vs R, REj = 499 Q Figure 1: Common-emitter amplifier for part #1
1a
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solve for the collector saturation current of an emitter stabilized bias circuit with Vcc=18V, RB=720k ohms, RC=2.7k ohms, RE=300 ohms and beta=100. A. 6mA B. 7mA C. 8mA D. 9mA
Prelab: Using the BJT large signal model for the circuit in Figure 1, determine the Vub voltage required to drive a collector current of I, = 0.5 mA. Use RB = 220 kN, Rc = 2.05 kN, RE = 1.05 kN, and Vee = 5V. Assume Is = 50nA and ß = 250. (Hint: Find Vbe using Ic, then use KVL to find Vbb, remember that Ib can be found using the Ic/ ß relationship) RC Voc R3 bb RE Figure 1 NPN BJT under DC Bias
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Kindly Show complete solutution and put diagrams if needed In which region is the transistor being operated for each of the following sets ofDC transistor terminal voltages (with respect to ground)?a) Collector: -7.32 V Base: -2.75 V Emitter: -2.07 Vb) Collector: 10.55 V Base: 9.89 V Emitter: 9.65 V
Elecronics Engineering
Figure 2 shows a typical BJT amplifier, with its parasitic capacitances displayed. The current gain of the transistor is B=150 and the voltage gain of the amplifier is Am =-125. The small signal resistances of the transistor are re =16 ohm and r0 = infinity, respectively. The values of resistors and capacitors in the figure are: R1 =80 kohm, R2 =20 Kohm, Rc = 2 Kohm, RE = 2 Kohm, Rs =50 W, RI=5 kohm, Cs=2 uF, Cc=2 uF, Ce =10 uF, Cbc =4 pF, Cbe = 10 pF, Cce =1 pF, Cwi = 4 pF, CWO = 9 pF, and Vcc = 20 V. a) Sketch a simplified circuit diagram of Figure 2 for high frequency analysis. b) Using the concept of "Miller effect capacitance", calculate the input and Output Miller effect capacitances of Figure 2, respectively. C) Determine the upper cut-off frequency of Figure 2 that is imposed by its input network only. d) Explain briefly the possible ways to increase the upper cut-off frequencv of this amplifier.
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1. To use the Bipolar Junction Transistor (BJT) as a small signal amplifier it must be biased in this region: A. South Park region B. Spatial interface region C. Inverse Thevenin region D. Linear or active region