Microelectronics: Circuit Analysis and Design
4th Edition
ISBN: 9780073380643
Author: Donald A. Neamen
Publisher: McGraw-Hill Companies, The
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Textbook Question
Chapter 6, Problem 6.48P
Consider the emitter−follower amplifier shown in Figure P6.48. The transistor parameters are
Figure P6.48
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1. For the circuit in Figure 6.58, RE = 2 k, R1 = R2 = 50 k and the transistor parameters are ß =
100, VE B(on) = 0.7 V, and VA = 125 V. (a) Determine the small-signal voltage gain Av = vo/vs.
(b) Find the resistances Rib and Ro. (Ans. (a) Av = 0.925, (b) Rib = 4.37 k, Ro = 32.0)
3+1=
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Vcc= +5 V
Rab 1
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Figure 6.58 Figure for Exercises TYU 6.11.
6.4) Explain conceptually whygm( sat) andgare the same.
Where,
g is conductance and gm(sat) is saturation transconductance.
1. For the following circuit assume re = 30.6 1
a. Draw the small signal equivalent circuit.
b. Find the input impedance.
c. Find output impedance.
d. Find the voltage gain.
e. Find the current gain.
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Chapter 6 Solutions
Microelectronics: Circuit Analysis and Design
Ch. 6 - The circuit parameters for the circuit in Figure...Ch. 6 - For the circuit in Figure 6.3, assume transistor...Ch. 6 - For the circuit in Figure 6.14(a), let =90 ,...Ch. 6 - Using the circuit and transistor parameters given...Ch. 6 - Consider the circuit in Figure 6.18. The circuit...Ch. 6 - Repeat Example 6.4 if the quiescent collector...Ch. 6 - For the circuit in Figure 6.31, let RE=0.6k ,...Ch. 6 - Prob. 6.6EPCh. 6 - The parameters of the circuit shown in Figure 6.28...Ch. 6 - For the circuit shown in Figure 6.31, let =100 ,...
Ch. 6 - Design the circuit in Figure 6.35 such that it is...Ch. 6 - For the circuit in Figure 6.28, the smallsignal...Ch. 6 - The circuit in Figure 6.38 has parameters V+=5V ,...Ch. 6 - For the circuit in Figure 6.39, let =125 ,...Ch. 6 - (a) Assume the circuit shown in Figure 6.40(a) is...Ch. 6 - For the circuit in Figure 6.39, let =125 ,...Ch. 6 - Reconsider the circuit in Figure 6.38. Let =120 ,...Ch. 6 - For the circuit shown in Figure 6.48, let =120 ,...Ch. 6 - For the circuit in Figure 6.31, use the parameters...Ch. 6 - Consider the circuit in Figure 6.38. Assume...Ch. 6 - For the circuit shown in Figure 6.49, let VCC=12V...Ch. 6 - Consider the circuit and transistor parameters...Ch. 6 - For the circuit in Figure 6.54, the transistor...Ch. 6 - Assume the circuit in Figure 6.57 uses a 2N2222...Ch. 6 - For the circuit in Figure 6.58, RE=2k , R1=R2=50k...Ch. 6 - Prob. 6.12TYUCh. 6 - For the circuit shown in Figure 6.63, the...Ch. 6 - Prob. 6.14TYUCh. 6 - For the circuit shown in Figure 6.64, let RS=0 ,...Ch. 6 - Consider the circuit in Figure 6.70(a). Let =100 ,...Ch. 6 - In the circuit in Figure 6.74 the transistor...Ch. 6 - Discuss, using the concept of a load line, how a...Ch. 6 - Prob. 2RQCh. 6 - Prob. 3RQCh. 6 - Sketch the hybrid- equivalent circuit of an npn...Ch. 6 - Prob. 5RQCh. 6 - Prob. 6RQCh. 6 - Prob. 7RQCh. 6 - Prob. 8RQCh. 6 - Prob. 9RQCh. 6 - Sketch a simple emitter-follower amplifier circuit...Ch. 6 - Sketch a simple common-base amplifier circuit and...Ch. 6 - Compare the ac circuit characteristics of the...Ch. 6 - Prob. 13RQCh. 6 - Prob. 14RQCh. 6 - (a) Determine the smallsignal parameters gm,r ,...Ch. 6 - (a) The transistor parameters are =125 and VA=200V...Ch. 6 - A transistor has a current gain in the range 90180...Ch. 6 - The transistor in Figure 6.3 has parameters =120...Ch. 6 - Prob. 6.5PCh. 6 - For the circuit in Figure 6.3, =120 , VCC=5V ,...Ch. 6 - The parameters of each transistor in the circuits...Ch. 6 - The parameters of each transistor in the circuits...Ch. 6 - The circuit in Figure 6.3 is biased at VCC=10V and...Ch. 6 - For the circuit in Figure 6.14, =100 , VA= ,...Ch. 6 - Prob. 6.11PCh. 6 - The parameters of the transistor in the circuit in...Ch. 6 - Assume that =100 , VA= , R1=33k , and R2=50k for...Ch. 6 - The transistor parameters for the circuit in...Ch. 6 - For the circuit in Figure P6.15, the transistor...Ch. 6 - Prob. D6.16PCh. 6 - The signal source in Figure P6.18 is s=5sintmV ....Ch. 6 - Consider the circuit shown in Figure P6.19 where...Ch. 6 - Prob. 6.20PCh. 6 - Figure P6.21 The parameters of the transistor in...Ch. 6 - Prob. 6.22PCh. 6 - For the circuit in Figure P6.23, the transistor...Ch. 6 - The transistor in the circuit in Figure P6.24 has...Ch. 6 - For the transistor in the circuit in Figure P6.26,...Ch. 6 - If the collector of a transistor is connected to...Ch. 6 - Consider the circuit shown in Figure P6.13. Assume...Ch. 6 - For the circuit in Figure P6.15, let =100 , VA= ,...Ch. 6 - Consider the circuit in Figure P6.19. The...Ch. 6 - The parameters of the circuit shown in Figure...Ch. 6 - Consider the circuit in Figure P6.26 with...Ch. 6 - For the circuit in Figure P6.20, the transistor...Ch. 6 - In the circuit in Figure P6.22 with transistor...Ch. 6 - For the circuit in Figure P6.24, the transistor...Ch. 6 - Prob. 6.40PCh. 6 - Consider the ac equivalent circuit in Figure...Ch. 6 - For the ac equivalent circuit in Figure P6.42,...Ch. 6 - The circuit and transistor parameters for the ac...Ch. 6 - Consider the circuit in Figure P6.45. The...Ch. 6 - For the transistor in Figure P6.47, =80 and...Ch. 6 - Consider the emitterfollower amplifier shown in...Ch. 6 - The transistor parameters for the circuit in...Ch. 6 - In the circuit shown in Figure P6.51, determine...Ch. 6 - The transistor current gain in the circuit shown...Ch. 6 - Consider the circuit shown in Figure P6.47. The...Ch. 6 - For the circuit in Figure P6.54, the parameters...Ch. 6 - Figure P6.59 is an ac equivalent circuit of a...Ch. 6 - The transistor in the ac equivalent circuit shown...Ch. 6 - Consider the ac equivalent commonbase circuit...Ch. 6 - Prob. 6.62PCh. 6 - The transistor in the circuit shown in Figure...Ch. 6 - Repeat Problem 6.63 with a 100 resistor in series...Ch. 6 - Consider the commonbase circuit in Figure P6.65....Ch. 6 - For the circuit shown in Figure P6.66, the...Ch. 6 - The parameters of the circuit in Figure P6.67 are...Ch. 6 - For the commonbase circuit shown in Figure P6.67,...Ch. 6 - Consider the circuit shown in Figure P6.69. The...Ch. 6 - In the circuit of Figure P6.71, let VEE=VCC=5V ,...Ch. 6 - Consider the ac equivalent circuit in Figure...Ch. 6 - The transistor parameters in the ac equivalent...Ch. 6 - Consider the circuit shown in Figure 6.38. The...Ch. 6 - For the circuit shown in Figure 6.57, the...
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- (H6-02) BJT Amplifier. (Course: Electronic Devices and Circuit Theory). -Use Equation Operators or write it down on paper/digital paper. -Redraw and Apply. -You can add //comments for a better understanding. -Please answer without abbreviation. -Make it clean and clear typing/writing. Thank you.arrow_forwardSolve it only for part Aarrow_forward6.12 The parameters of the transistor in the circuit in Figure P6.12 are ß = 150 and VA = 0. (a) Determine R1 and R2 to obtain a bias-stable circuit with the Q-point in the center of the load line. (b) Determine the small-signal voltage gain A, = v,/vs. v* = +5 V Rc=1.2 kQ Cc R2 Rg = 0.2 k2 V==-5V Figure P6.12arrow_forward
- Given the MOSFET in Figure 6 has bran) = 200 mA at VGs = 4 V and V(Tn) = 2 V; i. Plot the transfer characteristic curve for the MOSFET. b) i. Determine the operating point Vasa, Ioa and Vosa for the circuit. ii. Calculate the value of the transconductance gm at the Q-point. iv. Determine the voltage gain and input impedance of the amplifier. 15 V 1 kn. Coe 1.5 M2. Cin 33 kn. Vn 30 ka Figure 6arrow_forwardCompare hybrid model circuit and re model circuits. Which circuit are you going to recommend in solving AC signal amplifier stage. Defend your answerarrow_forwardThe parameters for each transistor in the circuit shown in Figure P6.75 areβ = 100 and VA = ∞. (a) Determine the small-signal parameters gm , rπ ,and ro for both transistors. (b) Determine the small-signal voltage gainAv1 = vo1/vs, assuming vo1 is connected to an open circuit, and determinethe gain Av2 = vo/vo1. (c) Determine the overall small-signal voltage gainAv = vo/vs. Compare the overall gain with the product Av1 · Av2, using thevalues calculated in part (b)arrow_forward
- I need the answer as soon as possiblearrow_forward4. A certain common-emitter amplifier has a voltage gain of 100. If the emitter bypass capacitor is removed, (a) The circuit will become un stable (c) The voltage gain will increase (b) the voltage gain will decrease (d) the Q-point will shift 5. For a common-collector amplifier, RE =1002, r'e= 10 2, and Bac=150. The ac input resistance at the base is: (a) 1500 2 (b) 15 k2 (c) 110 Q (d) 16.5 k2 6. If a 10 mV signal is applied to the base of the emitter-follower circuit in Question 5, the output signal is approximately (a) 100 mV (b) 150 mV (c) 1.5 V (d) 10 mVarrow_forwardQ.) Figure below divider bras amplifier Circuit. Givent the model Parameter : gm = 5o mS emitter (CE) Voltage BJT hibrid- TT Shows a Common riT: 6 Kr and to %3D : 00 +Vc. RI C2 Tooks touf RL Vo ihe 200 RE TCE Vs 20 a Draw the Ac eQuivalent at low Freauency Circuit Zi and b.) Determine inPut impedance at mid FreaUincy OutPut imPedance Z0 c.) Calculafe two low Cut -oFF FreQuen Cies FLC1 and FLC2 Ci and E2 respectively Such as due to the exterda al capacitorsarrow_forward
- Q6:A) A transistor dissipates 50W in an ambient temperature of 60°C.The thermal resistance are exc-0.5 the junction temperature without a heat sink. Determine the thermal resistance of the heat sink to avoid the junction exceeding 170°C. °CW¹,0a-4°CW.Determine 5% single polver supplyarrow_forwardI have solved it for part a only is the answer true for R-outarrow_forwarddraw the signal after adding -2.5DC level with the given signal, sketc the new output signal and draw the required circuit and briefly specify the function of circuit also name the phenomenonarrow_forward
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