For each Common Emitter amplifier below, find: Open-circuit voltage gain, Avo Voltage gain of the amplifier (with load resistance), Av Input resistance of the amplifier, Zin Output resistance of the amplifier, Zout Overall voltage gain of the amplifier, Gv Plot the output voltage Vo, and the voltage at the collector Vc, for an input sinusoidal signal Vsig=10mV sin(wt). Plot the input signal as a reference. 1. B=100, VT=25mV, VBE=0.7V, VA= 80V (use VA to compute r.). Vsig WH 2K CB B MIH 13V look my 4к сс CE 8K -13V 8K

For each Common Emitter amplifier below, find: Open-circuit voltage gain, Avo Voltage gain of the amplifier (with load resistance), Av Input resistance of the amplifier, Zin Output resistance of the amplifier, Zout Overall voltage gain of the amplifier, Gv Plot the output voltage Vo, and the voltage at the collector Vc, for an input sinusoidal signal Vsig=10mV sin(wt). Plot the input signal as a reference. 1. B=100, VT=25mV, VBE=0.7V, VA= 80V (use VA to compute r.). Vsig WH 2K CB B MIH 13V look my 4к сс CE 8K -13V 8K

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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Since the transistors used in the circuit are b=200 and r0= ∞(endless);A) By analyzing the DC for each amplifier floor separatelyre1, re2 find resistance values.B) Draw the AC equivalent circuit of the amplifier circuit.C) For each floor Zi=?, Z0 =?D) For each amplifier floor Av1, Av2 find the tension gains.E) Avl find Vl voltage value by finding voltage gain.
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.
III An n-channel MOSFET ID versus VDS set of characteristics is shown below. A common-source resistively loaded amplifier uses this MOSFET. The resistive load RL = 1,000 ohms and the drain power supply (VDD) = 3 volts. (a) Draw the load line over the l-V characteristics shown immediately below.. (b) What is the slope of the resistive load line? VDD =3 volts 6 mA 5 mA -+ R. 4 mA + 3 mA -t 2 mA 1 mA 3 V 4 V 5 V Vps
Find the desired in point 54 with finding what you can find.
b) For correct operation as an ac amplifier a npn BJT must be correctly DC biased to establish an appropriate Q-point, i.e a negative voltage VBC between the base and collector terminals and a positive voltage VBE between the base and emitter terminals. Figure 3.1 shows a circuit that can achieve this requirement. Explain the role of each resistive element in this circuit. Vin RB1 Cin HH iin RB2 + Rc VB RE + Vcc Vc Cout VE ww 11 Figure 3.1 th Vout Ce İout
a) Find the operating point current and voltage values of the non-linear element, in resistor R3 Calculate the voltage generated by the constant sources. b) Draw the circuit equivalent by linearizing the nonlinear element at the operating point. c) Using linearized equivalent small signal source j (t) to occur at R3 resistance calculate the voltage brought by it and give the expression of the VR3 voltage (constant sources and small sign sum of voltages generated by the source). E1=A=3 E2=B=8
Hand Calculation: Since you now have the values of R1 and R2 resistors, obtain numeric value of voltage gain Av=Vo/Vi, and numerical values of input and output resistances Ri and Ro. Note that you need to DC analysis first. Do a hand calculation and calculate the DC collector current or IC. This is needed in order to calculate the small signal parameters gm and rπ and in turn to obtain the Av , Ri and Ro Hence, first perform a DC analysis (use the circuit in Figure 1 and take all capacitors open) and assume your transistor has a β=140.
In an emitter-biased transistor circuit, we have collector source voltage V CC = 15 V, collector resistance RC = 3.5 kOhm, emitter voltage V_E = 4.3 V and emitter current LE = 2.1 mA. If the current gain is 150, what is the difference in emitter-collector voltage V_CE when we calculate it including the gain factor vs when it is calculated by assuming collector current LC = LE? Select one: O a. 3.35 V O b. 3.40 V OC 0.05 V O dov
For the circuit given below, transistor parameters are given as -= 0.1mA/V², Vth,p=-1V, A=0. Using these information, a) Design the circuit (find the values of R1and R2) such that Ip=100HA. b) Find the small signal voltage gain Vo/Vi of the circuit. R1 10 V - R2 ww0-2.5 V
please solve
1. By using re model, draw the a.c. equalent circuit for the transistor amplifier shown in figure 1 Figure 1 i. ii. iii. iv. "Î Figure 2 R₁ C₁ V₁ R₂ 2. By using equalent circuit mention in 'part 1'. Write the mathematical expressions for followings, www m input impedence of the amplifier output impedance of the amplifier voltage gain of the amplifier current gain of the amplifier 3. By using h-parameter model, draw the a.c. equalent circuit for the transistor amplifier shown in figure 2. Assume that hre= high (∞), hoe = 0 and the rectance of capacitors C₁, C₂ and C3 is zero. Vcc Rc R₁ C₁ VBE RE R₂ +₁. Vcc Rc RE: C₂ C₂ Vo Vo R₁ R₂ Rc RE hie hfe = 38 ΚΩ = 10 ΚΩ = 4.7 ΚΩ = 2.2 kΩ = 1kΩ = 50
The amplifier circuit below has a single ac input and two ac outputs. Assuming transistor parameters of B = 100 and Vu = 0.6 V: a) Detemine the Q point 5) Is the transistor in the active region? Explain thoroughly. c) Construct the T-model of the transistor with all parameters labelled and evaluated. Assume room temperature. d) Draw a complete small signal circuit model, then find the voltage gain for both outputs. e) Based on the analysis results, what is the function of this circuit? Suggest a proper application. 2) Assuming that cach output is feeding a 50-kN resistor, determine the total voltage gain and current gain for both outputs. Also, calculate the amplifier input resistance and the amplifier output resistances. 10 V 10 V Rc= 3.3 kl 100 kN 50 kΩ Rg = 3 kſl