Loose Leaf for Engineering Circuit Analysis Format: Loose-leaf
9th Edition
ISBN: 9781259989452
Author: Hayt
Publisher: Mcgraw Hill Publishers
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Chapter A1.2, Problem 3P
For the transistor amplifier equivalent circuit shown in Fig. A1.12, let re = 50 Ω, rb = 500 Ω, rc = 20 kΩ, and α = 0.99, and find both ie and vL by drawing a suitable tree and using (a) two loop equations; (b) three nodal equations with a common reference node for the voltage; (c) three nodal equations without a common reference node.
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Since the transistors used in the circuit are B=100, ro=∞
a) Find the re1, re2 resistance values by performing the DC analysis for each amplifier stage separately.
b) Draw the AC equivalent circuit of the amplifier circuit.
c)Find the input and output impedance values for each amplifier stage.
d) Find the voltage gains AV1, AV2 for each amplifier stage.
e) Find the voltage value VL by finding the AV1 Voltage gain.
3) Consider the transistor circuit below. Assume the input is biased such that
the transistor works normally, and ignore any internal resistances in the
transistor. For the calculations in this problem, you may assume ß > 1.
a) Consider small voltage changes Vin and
Vout at the input and output (i.e., ignore
bias voltages). Compute the voltage gain
G = Vout/Vin-
+Vcc
Rc
b) Compute the input impedance.
Zin = Vin/lin
Vout
c) Compute the output impedance.
Zout = Vout/lout
Ra
Ignore the transistor impedance.
Vin
The transistors T1 and T2 used in the figure are identical and β=150, ro=∞ and V|BE|=0.7V for all transistors;
a) Find the value of resistor R4 (IB3 will not be neglected) so that the clipping at the output is minimized and symmetrical.b) Draw the AC equivalent circuit of the circuit and calculate the voltage gain Vo/Vi, input resistance Zi and output resistance Zo.
Chapter A1 Solutions
Loose Leaf for Engineering Circuit Analysis Format: Loose-leaf
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Since the transistors used in the circuit are B=100, ro= ∞(endless) ;a. re1, re2 , find the resistance values by analyzing the DC separately for each amplifier solid.b. Draw the AC equivalent circuit of the amplifier circuit.c. Find the input and output impedance values for each amplifier solid.d. Find a Av1, Av2 voltage gains for each amplifier floor.e. Find gerilim voltage value by finding AVLvoltage gain.(XX = 18)arrow_forwardSee attached picture: Which two transistors are p-type and which two are n-type? Refer to the transistors by their labels (a, b, c, or d). Also, which transistors (a, b, c, or d) are “ON” when: A) Input A = 0, Input B = 0 B) Input A = 1, Input B = 0 C) Input A = 0, Input B = 1 D) Input A = 1, Input B = 1arrow_forwardSince the transistors used in the circuit are B=100, ro=∞ a) Find the re1, re2 resistance values by performing the DC analysis for each amplifier stage separately. d) Find the voltage gains AV1, AV2 for each amplifier stage. e) Find the voltage value VL by finding the AV1 Voltage gain.arrow_forward
- 6. In Fig., solve for IB, Ic, and VCE. Also, construct a DC load line showing the values of IC(sat),VCE (off), Ico, and VCEQ. +Vcc = 12 V R₂ 390 ΚΩ www Rc = 1.5 k Bpc = 150arrow_forwardThe amplifier of Figure below utilizes a Si transistor with negligible leakage current and B 59, Vcc 15 V, V = 3 V, (VL is the dc %3D %3D component of v), and RE= 1.5 kO.arrow_forwardIn the circuit given in the figure, β = 100, r0 = 40 kΩ, RB = 360 kΩ, RC = 3.3 kΩ, RE = 220 Ω, Rs = 0.5 kΩ and RL = 53 kΩ. Accordingly, find the voltage gain (Vout/Vin) of the circuit.NOTE-1: The output impedance of the transistor r0 will be taken into account in the calculations.NOTE-2: Capacitors are negligible at midband frequency.NOTE-3: The applied ac voltage has an amplitude of 10 mV and a frequency of 1 kHz.arrow_forward
- Q4) The parameters for BJT are given as B = 100 and Va = 0.7V R13 Ic 5ka Q1 Ib R14 V7 -15V 200ka V6 5V a) Determine l b) Determine l. c) Determine d) What is the mode of operation of the BJTarrow_forwardA base biased transistor circuit with the following element values is given VBB = 10V, VCC = 10V, RB = 470kΩ +/- 5%, RC = 820Ω, β = 100. Find the max and min values of base current. Type your equations and results ..arrow_forwardA common emitter amplifier as shown in Figure Q2 has the following parameters, β = 100, R1= 33K, R2 = 10K, RC = 3K3, RE = 1K, ro = and VBE = 0.7 V.State all assumptions made.i. Check whether βRE>>10R2 is satisfiedii. Use the appropriate approach of analysis to determine the Quiescent point; IBQ,ICQ and VCEQ.iii. Draw the small signal equivalent circuit. Determine input impedance, Zin, outputimpedance, Zout, and the voltage gain, AV, if RL=20kΩ.arrow_forward
- A common emitter amplifier as shown in Figure Q2 has the following parameters, B= 100, R1 = 33K, R2 = 10K, Rc = 3K3, RE = 1K, ro= o and VBE = 0.7 V. State all assumptions made. i. Check whether BRE>>10R2 is satisfied ii. Use the appropriate approach of analysis to determine the Quiescent point; IBQ, Ico and VCEO. iii. Draw the small signal equivalent circuit. Determine input impedance, Zin, output impedance, Zout, and the voltage gain, Av, if RL=20kN. Vcc=18V Ic R1 Rc Vo V; O Co RL R2 CE RE Zin Zout Figure Q2arrow_forwardDesign an amplifier composed of 2 CE VDB amplifiers to have a total open circuit voltage gain of 120 dB. Also, use 2N2904 transistor and assume B = 120.arrow_forward4) Below is the small signal model of a multistage amplifier. Using this model, write the equationsthat you would need to determine the voltagegain. IMPORTANT: You only need to providethe equations that you would need to determinethe voltage gain. You DO NOT need to combine and simplify the equationsto determine a final expression for the voltagegain. Vin Vo Vb vo1 Rb R13 Vbe1 Vbe2 'e gm 1 Vbe1 gm 2 Vbe2 Rc2 Rc1 Rearrow_forward
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