Homework Answers
![9m 3-973_4103 26x103 T = 10528 X10 [gm = 0.1528 Aly] → Ac-equivalent circuit 9m 17lool 1, B Yout A = Avalanche voltage not gi](http://img.homeworklib.com/questions/ab62d270-091e-11ec-bb0c-938a75d5e5f2.png?x-oss-process=image/resize,w_560)
![up = Ib q + RE (Abt Ib B] [up = Ib (PA + RE (IAB) Vo = - B Ib Re - Rc -BIRC AU NO Ano Io lont RECIAR - BA + RE (14B] {1+B 28}](http://img.homeworklib.com/questions/accf71e0-091e-11ec-8cb4-fddb069602f6.png?x-oss-process=image/resize,w_560)
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i just need help with B, C, D
3) (24 pts) The BJT amplifier shown below....
In a small signal voltage amplifier using a pnp transistor shown below, the voltage gain is 350.2. The value of a-0.95. Find the equivalent model emitter resistance re in Ohms if Rc-4.1K2. The BJT is...
In a small signal voltage amplifier using a pnp transistor shown below, the voltage gain is 350.2. The value of a-0.95. Find the equivalent model emitter resistance re in Ohms if Rc-4.1K2. The BJT is operating at room temperature and VBE 0.7V RE-10K CCI vi Cc2 Rc
In a small signal voltage amplifier using a pnp transistor shown below, the voltage gain is 350.2. The value of a-0.95. Find the equivalent model emitter resistance re in Ohms if Rc-4.1K2. The...
Problem 2: BJT Small-Signal Voltage Amplifiers in the lectures, we covered in detail the analysis of an npn BJT amplifier that utilizes a single-supply DC biasing. In this problem, you will meet...
Problem 2: BJT Small-Signal Voltage Amplifiers in the lectures, we covered in detail the analysis of an npn BJT amplifier that utilizes a single-supply DC biasing. In this problem, you will meet two additional amplifier architectures- one that is based on dual DC supplies combined with a DC current source, and the other that utilizes a pnp BJT with single-supply biasing. In both problems (below) you need to manually find the amplifier's Q-point (that is, the DC values of Ic...
1. Problem 1: For the circuit below, where β-100 and VT 25mV a. Find the dc...
1. Problem 1: For the circuit below, where β-100 and VT 25mV a. Find the dc collector current, Ic. b. Find the small signal parameters: gm , Γπ and re- c. Draw the small-signal equivalent circuit by replacing the BJT with its hybrid-t model. d. Draw the small-signal equivalent circuit by replacing the BJT with its T model. e. Use the circuit in c or d to determine the voltage gains (Ao, A.) and overall gain (Gv) 5V 1V Vout...
A CE amplifier utilizes a BJT with β = 100 biased at IC = 0.5 mA;...
A CE amplifier utilizes a BJT with β = 100 biased at IC = 0.5 mA; it has a collector resistance RC = 10 kΩ. Find Rin, Ro, and Avo. If the amplifier is fed with a signal source having a resistance of 10 kΩ, and a load resistance RL =10 kΩ is connected to the output terminal, find the resulting Av and Gv. If the peak voltage of the sine wave appearing between base and emitter is to be...
In the CE amplifier shown below, a. Find the transistor DC operating points. Check what region...
In the CE amplifier shown below, a. Find the transistor DC operating points. Check what region of operation the transistor is biased at. b. Calculate the small signal voltage gain, the input resistance looking into the base of the transistor, and the output resistance looking down at the collector. c. Find the small signal current gain, 으 VBE,ON = 0.6V, and β = 100, VA = 00, Base current may be ignored if possible
Small signal (AC) model for the npn BJT is given below. According to this picture, which...
Small signal (AC) model for the npn BJT is given below. According to this picture, which is not correct for this transistor if the DC base current (B) is known to be 0.05mA and gain (ß) is 125, Early voltage is given (VA-100 V at room temperature (Vt-25 mVT Vbe <t> gnNbe'.ro Bo-ㄧㄧ 10 NPN π model T model a transconductance gm- 250mS -b. AC emitter resistance ㈨ is-4ohms c Emitter efficiency a is 90% d- Has a finite output...
** I only need help on (c) , (d) , (e) , (h) ** 3. Consider...
** I only need help on (c) , (d) , (e) , (h)
**
3. Consider the amplifier to the right. Do not ignore the Early effect resistance, and assume that the values of, ro, β , and gm, are known, or have been found from the DC analysis. For the following questions, show all steps of the circuit analysis (a) What type of amplifier is it? (b) Draw the small-signal version of this amplifier (c) Derive an expression for...
Design a BJT amplifier based on the specifications provided in the table below. Your design shoul...
THE STEPS TO DO SO:
Design a BJT amplifier based on the specifications provided in the table below. Your design should be insensitive to β variations, and both the input and the output should be AC coupled as in Fig. 1. Supply Voltage, Vcc Load Resistance, RL Transistor's Current Gain, β Relative Variation of lc for VBE-0.7 ± 0.1 V 0-to-Peak Output Swing, Vo Voltage Gain, A Input Resistance, R THD for 5kHz IV (0-to-peak) Sine Wave Output Voltage, V。S5%...
Problem 2: BJT Small-Signal Voltage Amplifiers In the lectures, we covered in detail the analysis...
Problem 2: BJT Small-Signal Voltage Amplifiers In the lectures, we covered in detail the analysis of an npn BJT amplifier that utilizes a single-supply DC biasing. In this problem, you wi meet two additional amplifier architectures-one that is based on dual DC supplies combined with a DC current source, and the other that utilizes a pnp BJT with single-supply biasing In both problems (below) you need to manually find the amplifier's Q-point (that is, the DC values of Ic and...
The BJT amplifier circuit in the figure below has β = 90. Use VT = 25...
The BJT amplifier circuit in the figure below has β = 90. Use VT
= 25 mV
a- Draw the DC equivalent circuit and calculate IC.
b- Draw the small signal equivalent circuit and calculate the
small signal parameters.
c- Find the voltage gain
+9V 3 kΩ C2 = 1 uF HE C = 1uF + υο 10 kΩ Cz = 50 uF - . υ 9 kΩ Η. 6. ΚΩ -9 V
In a small signal voltage amplifier using a pnp transistor shown below, the voltage gain is 350.2. The value of a-0.95. Find the equivalent model emitter resistance re in Ohms if Rc-4.1K2. The BJT is operating at room temperature and VBE 0.7V RE-10K CCI vi Cc2 Rc
In a small signal voltage amplifier using a pnp transistor shown below, the voltage gain is 350.2. The value of a-0.95. Find the equivalent model emitter resistance re in Ohms if Rc-4.1K2. The...
Problem 2: BJT Small-Signal Voltage Amplifiers in the lectures, we covered in detail the analysis of an npn BJT amplifier that utilizes a single-supply DC biasing. In this problem, you will meet two additional amplifier architectures- one that is based on dual DC supplies combined with a DC current source, and the other that utilizes a pnp BJT with single-supply biasing. In both problems (below) you need to manually find the amplifier's Q-point (that is, the DC values of Ic...
1. Problem 1: For the circuit below, where β-100 and VT 25mV a. Find the dc collector current, Ic. b. Find the small signal parameters: gm , Γπ and re- c. Draw the small-signal equivalent circuit by replacing the BJT with its hybrid-t model. d. Draw the small-signal equivalent circuit by replacing the BJT with its T model. e. Use the circuit in c or d to determine the voltage gains (Ao, A.) and overall gain (Gv) 5V 1V Vout...
In the CE amplifier shown below, a. Find the transistor DC operating points. Check what region of operation the transistor is biased at. b. Calculate the small signal voltage gain, the input resistance looking into the base of the transistor, and the output resistance looking down at the collector. c. Find the small signal current gain, 으 VBE,ON = 0.6V, and β = 100, VA = 00, Base current may be ignored if possible
Small signal (AC) model for the npn BJT is given below. According to this picture, which is not correct for this transistor if the DC base current (B) is known to be 0.05mA and gain (ß) is 125, Early voltage is given (VA-100 V at room temperature (Vt-25 mVT Vbe <t> gnNbe'.ro Bo-ㄧㄧ 10 NPN π model T model a transconductance gm- 250mS -b. AC emitter resistance ㈨ is-4ohms c Emitter efficiency a is 90% d- Has a finite output...
** I only need help on (c) , (d) , (e) , (h)
**
3. Consider the amplifier to the right. Do not ignore the Early effect resistance, and assume that the values of, ro, β , and gm, are known, or have been found from the DC analysis. For the following questions, show all steps of the circuit analysis (a) What type of amplifier is it? (b) Draw the small-signal version of this amplifier (c) Derive an expression for...
THE STEPS TO DO SO:
Design a BJT amplifier based on the specifications provided in the table below. Your design should be insensitive to β variations, and both the input and the output should be AC coupled as in Fig. 1. Supply Voltage, Vcc Load Resistance, RL Transistor's Current Gain, β Relative Variation of lc for VBE-0.7 ± 0.1 V 0-to-Peak Output Swing, Vo Voltage Gain, A Input Resistance, R THD for 5kHz IV (0-to-peak) Sine Wave Output Voltage, V。S5%...
Problem 2: BJT Small-Signal Voltage Amplifiers In the lectures, we covered in detail the analysis of an npn BJT amplifier that utilizes a single-supply DC biasing. In this problem, you wi meet two additional amplifier architectures-one that is based on dual DC supplies combined with a DC current source, and the other that utilizes a pnp BJT with single-supply biasing In both problems (below) you need to manually find the amplifier's Q-point (that is, the DC values of Ic and...
The BJT amplifier circuit in the figure below has β = 90. Use VT
= 25 mV
a- Draw the DC equivalent circuit and calculate IC.
b- Draw the small signal equivalent circuit and calculate the
small signal parameters.
c- Find the voltage gain
+9V 3 kΩ C2 = 1 uF HE C = 1uF + υο 10 kΩ Cz = 50 uF - . υ 9 kΩ Η. 6. ΚΩ -9 V
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