Homework Answers
Class B conducts for 180 input cycle. Class B amplifier is amplifier where transistor conducts for half cycle of input cycle. It means conduction angle here is 180 degree.
Maximum efficiency of class A amplifier is 50%.
But in practical if u use inductive and capacitive load, efficiency can be decreased to 25%. Here,It means u r only getting 25 % of input signal and 75 % gets wasted in transistor.
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QUESTION 19 A class B amplifier conducts for O a. 90° of input cycle O b....
QUESTION 16 In a transistor, a signal that swings outside the active area will be a...
QUESTION 16 In a transistor, a signal that swings outside the active area will be a clamped b. clipped OC. unstable O d. all of the above QUESTION 17 A class A amplifier conducts for a. 90° of input cycle b. 180° of input cycle c. 270° of input cycle od 360° of input cycle QUESTION 18 Class A power amplifiers O a are not subject to cross-over distortion Ob are more efficient than classt amplifiers c. are biased into...
1. The Class A Power Amplifier: For the 0.4 Vpp, input: 1) what is the input power, the output power, the power gai...
1. The Class A Power Amplifier: For the 0.4 Vpp, input: 1) what is the input power, the output power, the power gain, DC power, and the efficiency ? 2) What is the maximum possible output power? 12V Re Cs Ci 100 Ω 47ถ sion 5101) C,
1. The Class A Power Amplifier: For the 0.4 Vpp, input: 1) what is the input power, the output power, the power gain, DC power, and the efficiency ? 2) What is the...
1. The Class A Power Amplifier: For the 0.4 Vppinput: 1) what is the input power, the output power, the power gain,...
1. The Class A Power Amplifier: For the 0.4 Vppinput: 1) what is the input power, the output power, the power gain, DC power, and the efficiency ? 2) What is the maximum possible output power? +12V Rc C 100 Ω 4.7 ถ 510 Ω Sion Sata"
1. The Class A Power Amplifier: For the 0.4 Vppinput: 1) what is the input power, the output power, the power gain, DC power, and the efficiency ? 2) What is the maximum...
If a l V rms signal source with an internal resistance of 50 Ω is connected...
If a l V rms signal source with an internal resistance of 50 Ω is connected to the amplifier in Figure what is the actual rms signal applied to the amplifier input? Assume Bac 200 +15 V RI 1.0 kΩ 01 Di C3 02 75 Ω 1.0 kΩ Class C Power Amplifiers A certain class C amplifier transistor is on for 10 percent of the input cycle. If Veetsa) 0.18 V and Ie(sa)25 mA, what is the average power dissipation...
QUESTION 12 To improve the efficiency of an amplifier, you have to a reduce load power...
QUESTION 12 To improve the efficiency of an amplifier, you have to a reduce load power b. increase supply current OC. reduce supply voltage od decrease unwanted power losses QUESTION 13 If the output of a transistor amplifier is 5 V rms and the input is 100 mVrms the voltage gain is O as w 6.500 O c 50 d. 100 QUESTION 14 If the DC current gain of a certain transistor operating in the linear region is 30 and...
u must show an expression (equation) before inserting in the numbers" β-40. The input signal results in a base 1. For the class A amplifier circuit of fig. Pl, current having a peak valu...
u must show an expression (equation) before inserting in the numbers" β-40. The input signal results in a base 1. For the class A amplifier circuit of fig. Pl, current having a peak value of 5 mA. Determine: (a) The input power (P(d) and output power (Pofac). (b) The power loss (Ploss) and the efficiency (7) of this amplifier. 15 Vcc (18 V) Re-16 Ω 1.2 k2 Ci 100 pF Fig. PI
u must show an expression (equation) before inserting...
a) What is "power-conversion efficiency' of an output stage? Comparo the class-A and class-B amplifier output...
a) What is "power-conversion efficiency' of an output stage? Comparo the class-A and class-B amplifier output stages with rospect to their power-conversion officiencies. b) Assume that an emitter follower 9, is used as a class-A output stago, with the constant current supplied by another transistor 2. (as in Figure Q.4.a). Let Vcc=16V, 1 =100mA, and R=10002. If the output voltage is an 4-V-peak sinusoid, find the power conversion efficiency. VC Figure Q.4.a c) Explain the crossover distortion in a class-B...
Obesity OA) is not related to hypertension. O B) reduces risk for hypertension. O C) is...
Obesity OA) is not related to hypertension. O B) reduces risk for hypertension. O C) is the number one lifestyle risk factor for hypert D) is a minor contributor to risk for hypertension. Question 7 (2 points) Water constitutes percent of body weight. OA) 75-95 OB) 10-20 OC) 25-45 OD) 50-70
Consider a class-A power amplifier using output transformer as in the beside figure, where the transformer ration N=1.5. β=100, VBE =0,6V
Consider a class-A power amplifier
using output transformer as in the
beside figure, where the transformer
ration N=1.5. β=100, VBE
=0,6V. Determine:
a/ Maximum power consumed by the
load RL
. b/ Average power supplied by the DC
source. c/ Efficiency of the circuit. d/ Average power dissipation of BJT
1.0 kn. RE-390 Ω, r-15 Ω. and ßac-75. 5. For a common-emitter amplifier, Rc Assuming that Rg is completely bypassed at the operating frequency, the voltage gain is (a) 66.7 (d) 75 (b) 2.56 (c) 2....
1.0 kn. RE-390 Ω, r-15 Ω. and ßac-75. 5. For a common-emitter amplifier, Rc Assuming that Rg is completely bypassed at the operating frequency, the voltage gain is (a) 66.7 (d) 75 (b) 2.56 (c) 2.47 6. In the circuit of Question 5, if the frequency is reduced to the point where Xctbypass) RE, the voltage gain (a) remains the same (b) is less (c) is greater 7. In a common-emitter amplifier with voltage-divider bias, Rimlbase) 68 k2, Ri 33...
QUESTION 16 In a transistor, a signal that swings outside the active area will be a clamped b. clipped OC. unstable O d. all of the above QUESTION 17 A class A amplifier conducts for a. 90° of input cycle b. 180° of input cycle c. 270° of input cycle od 360° of input cycle QUESTION 18 Class A power amplifiers O a are not subject to cross-over distortion Ob are more efficient than classt amplifiers c. are biased into...
1. The Class A Power Amplifier: For the 0.4 Vpp, input: 1) what is the input power, the output power, the power gain, DC power, and the efficiency ? 2) What is the maximum possible output power? 12V Re Cs Ci 100 Ω 47ถ sion 5101) C,
1. The Class A Power Amplifier: For the 0.4 Vpp, input: 1) what is the input power, the output power, the power gain, DC power, and the efficiency ? 2) What is the...
1. The Class A Power Amplifier: For the 0.4 Vppinput: 1) what is the input power, the output power, the power gain, DC power, and the efficiency ? 2) What is the maximum possible output power? +12V Rc C 100 Ω 4.7 ถ 510 Ω Sion Sata"
1. The Class A Power Amplifier: For the 0.4 Vppinput: 1) what is the input power, the output power, the power gain, DC power, and the efficiency ? 2) What is the maximum...
If a l V rms signal source with an internal resistance of 50 Ω is connected to the amplifier in Figure what is the actual rms signal applied to the amplifier input? Assume Bac 200 +15 V RI 1.0 kΩ 01 Di C3 02 75 Ω 1.0 kΩ Class C Power Amplifiers A certain class C amplifier transistor is on for 10 percent of the input cycle. If Veetsa) 0.18 V and Ie(sa)25 mA, what is the average power dissipation...
QUESTION 12 To improve the efficiency of an amplifier, you have to a reduce load power b. increase supply current OC. reduce supply voltage od decrease unwanted power losses QUESTION 13 If the output of a transistor amplifier is 5 V rms and the input is 100 mVrms the voltage gain is O as w 6.500 O c 50 d. 100 QUESTION 14 If the DC current gain of a certain transistor operating in the linear region is 30 and...
u must show an expression (equation) before inserting in the numbers" β-40. The input signal results in a base 1. For the class A amplifier circuit of fig. Pl, current having a peak value of 5 mA. Determine: (a) The input power (P(d) and output power (Pofac). (b) The power loss (Ploss) and the efficiency (7) of this amplifier. 15 Vcc (18 V) Re-16 Ω 1.2 k2 Ci 100 pF Fig. PI
u must show an expression (equation) before inserting...
a) What is "power-conversion efficiency' of an output stage? Comparo the class-A and class-B amplifier output stages with rospect to their power-conversion officiencies. b) Assume that an emitter follower 9, is used as a class-A output stago, with the constant current supplied by another transistor 2. (as in Figure Q.4.a). Let Vcc=16V, 1 =100mA, and R=10002. If the output voltage is an 4-V-peak sinusoid, find the power conversion efficiency. VC Figure Q.4.a c) Explain the crossover distortion in a class-B...
Obesity OA) is not related to hypertension. O B) reduces risk for hypertension. O C) is the number one lifestyle risk factor for hypert D) is a minor contributor to risk for hypertension. Question 7 (2 points) Water constitutes percent of body weight. OA) 75-95 OB) 10-20 OC) 25-45 OD) 50-70
1.0 kn. RE-390 Ω, r-15 Ω. and ßac-75. 5. For a common-emitter amplifier, Rc Assuming that Rg is completely bypassed at the operating frequency, the voltage gain is (a) 66.7 (d) 75 (b) 2.56 (c) 2.47 6. In the circuit of Question 5, if the frequency is reduced to the point where Xctbypass) RE, the voltage gain (a) remains the same (b) is less (c) is greater 7. In a common-emitter amplifier with voltage-divider bias, Rimlbase) 68 k2, Ri 33...
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