Microelectronics: Circuit Analysis and Design
4th Edition
ISBN: 9780073380643
Author: Donald A. Neamen
Publisher: McGraw-Hill Companies, The
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Chapter 6, Problem 6.2P
(a) The transistor parameters are
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What is the voltage gain (Av) of the circuit when = 100, r0 = 40 kΩ, RB = 360 kΩ, RC = 3.3 kΩ, RE = 220 Ω, Rs = 15 kΩ and RL = 379 kΩ?
NOTE-1: The output impedance r0 of the transistor will be taken into account in the calculations.
NOTE-2: Capacitors are negligible at mid-band frequency.
(a) What is the total input capacitance in the circuit as shown if Cπ = 20 pF, Cμ = 1 pF, IC = 5 mA, and RL = 1 kΩ? What is the fT of this transistor? (b) Repeat for IC = 4 mA and RL = 2 kΩ.
Since Vcc = 25 V, Vi = 2 mV, RB = 470 kΩ, RC = 1.5 kΩ, RE1 = 470 Ω, RE2 = 1.2 kΩ, RL = 42 kΩ and β = 110 in the circuit in the figure, the value of the output voltage (Vo) find it.
NOTE-1: Capacitors are negligible at mid-band frequency.
NOTE-2: The output impedance (r0) of the transistor will be neglected.
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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- Since Vcc = 25 V, Vi = 36 mV, RB = 470 kΩ, RC = 3.1 kΩ, RE1 = 470 Ω, RE2 = 1.2 kΩ, RL = 56.2 kΩ and β = 110 in the circuit in the figure, find the value of the output voltage (Vo). NOTE-1: Capacitors are negligible at mid-band frequency. NOTE-2: The output impedance (r0) of the transistor will be neglected.arrow_forwardA bipolar transistor is operating with vBE =+0.7 V and vBC = +0.3 V. By the strict definitionsgiven in the chapter on bipolar transistors, this transistoris operating in the saturation region. Use thetransport equations to demonstrate that it actuallybehaves as if it is still in the forward-active region.Discuss this result. (You may use IS = 10−15 A,αF = 0.98, and αR = 0.2.)arrow_forwardAn npn transistor with IS = 1 × 10−16 μA, αF =0.975, and αR = 0.5 is operating with VB E = 0.70 Vand VBC = 0.50 V. By definition, this transistor isoperating in the saturation region. However, in thediscussion it was noted that this transistor actually behaves as if it is still in the forwardactive region even though VBC > 0. Why? Use thetransport model equations to justify your answerarrow_forward
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- In the circuit given in the figure, what is the voltage gain (Av) of the circuit when = 100, r0 = 40 kΩ, RB = 360 kΩ, RC = 3.3 kΩ, RE = 220 Ω, Rs = 15 kΩ and RL = 166 kΩ?NOTE-1: The output impedance r0 of the transistor will be taken into the calculations.NOTE-2: Capacitors are negligible at mid-band frequency.arrow_forwardPlease analyze the circuit and determine the voltage gain of both (Av,dc = Vc/Vb for DC analysis) and (Av,ac = Vo/Vs for AC analysis) where RB = 450K, Rs = 80, Ci = 47 uF, RC = 3.3K, Co = 4.7 uF, RL = 100K. In addition, find the output equivalent resistance from the Vo terminal (in AC) and the input equivalent resistance from the Vs terminal (in AC). Hint: the transistor is a Si-based one. You have to write all the calculation details and verbal explanations. You can calculate hie = beta * 26mV / Ie (mA, dc) and use the hoe as an open circuit.arrow_forwardThe ac equivalent circuit for an amplifier is shown . Assume the capacitors have infinite value, RI = 10 kΩ, RG = 1 MΩ, RD = 3.9 kΩ, and R3 = 33 kΩ. Calculate the voltage gain for the amplifier if the MOSFET Q-pointis (2 mA, 7.5 V). Assume Kn = 1 mA/V2 and λ = 0.015 V−1.arrow_forward
- ı just need the fınal answer Since Vcc = 20 V, RS = 3 kΩ, RB = 380 kΩ, RC = 1.2 kΩ, RE = 2.2 kΩ, RL = 911 Ω and β = 90 in the circuit in the figure, find the value of the output voltage (Vo). NOTE-1: It is within the 1 kHz mid-band frequency and the capacitors are negligible at this frequency. NOTE-2: The output impedance (r0) of the transistor will be neglected. a. 64,14 mV b. 83,88 mV c. 93,75 mV d. 74,01 mV e. 103,62 mV f. 24,67 mV g. 34,54 mV h. 49,34 mVarrow_forward1. "Given a common emiiter amplifier (Fixed BIas) with the following network: RB = 3.1k, Rc = 1k, Beta = 150, Vcc = 12V. Determine the output impedance." 1.974k ohms 1k ohms 8.621 ohms 2.7k ohms The circuit does not operate as an amplifier 6.8 ohms 3.1k ohms 2. "Given a common emiiter amplifier (Voltage Divider) with the following network: R1 = 22k, R2 = 6.8k, Rc = 1k, Re = 560, Beta = 150, Vcc = 12V. The load resistance Rl = 10k. The output impedance is ________. Note: R2 is the resistor connected to the base and ground." 1000 ohms 732 ohms 909 ohms 1245 ohms "10,000 ohms" 833 ohms 3. "Given a common emiiter amplifier (Fixed BIas) with the following network: RB = 3.1k, Rc = 1k, Beta = 150, Vcc = 12V. Determine the unloaded voltage gain." The circuit does not operate as an amplifier 205 "2,202" 220…arrow_forwardIf the multistage amplifier is driven by a 1 μV source and the last stage is loaded with an RL = 20 kΩ, determine the ac emitter resistor, re, for each stage. Given: R1 = 33 kΩ, R2 = 8.2 kΩ, RC = 3.3 kΩ, RE = 1 kΩ, Beta = 175arrow_forward
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