We have an amplifier that draws 2A from a 15-V dc power supply. The input signal current is 1mA rms, and the input resistance is 2 k ohm. The amplifier delivers 12V rms to an 8 ohm load. Determine the power dissipated in the amplifier and the efficiency of the amplifier.
We have an amplifier that draws 2A from a 15-V dc power supply. The input signal...
Q2: An amplifier operating from t 15-V power supplies is fed with a sinusoidal voltage having 1 V peak and delivers a sinusoidal voltage output of 12 V peak to a 1-kΩ load. The amplifier draws a current of 6.5 mA from each of its two power supplies. The input current of the amplifier is found to be sinusoidal with 0.1 mA peak. Find (a) the voltage gain, (b) the current gain, (c) the power gain, (d) the power drawn...
Solve for the over-all Power Gain, Output Power, Quiescent Power, and Efficiency Vee 12V Qa 0, 0.22 pP 10 pF o Ln OkH 00 pF 33 Ω 2 W 100 pF 3 Class C(15pts) 2.1 For a class B amplifier providing a 20-V peak signal to a 16- ohm load (speaker) and a power supply of VCC 30 V, determine the A class C amplifier is driven by a 100 kHz signal. The transistor is on for 2 us, and...
1. Figure 1 shows a CE power amplifier in which the collector resistor serves also as the load resistor. Assume Bpc Bac 100 a. Determine the dc Q-point (lco and VCEQ). b. Determine the voltage gain and the power gain c. The power dissipated in the transistor with no load. d. The total power from the power supply with no load e. The signal power in the load with a 500 mV input. f. What changes would be necessary to...
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...
Calculate the power consumption from the DC power supply for our two transistor amplifier when there is no AC input signal. R1 47k RC 2.74k Vout Cin Vin 220n RS 470 47micro 2N3904 8 Ohm SPKR R2 10k RE 1k RE' 820 5 1 47micro Common Emitter Stage Emitter Follower Stage
A 6 hp, 180 V shunt dc motor draws a full-load current of 30 A from the power supply. The motor has a field (shunt) resistance of 150 Ω. The armature resistance of the motor is 0.1 Ω. When the motor speed is 1800 rpm (this is not the full-load speed), the relationship between the induced voltage
a/ Calculate the DC current going through biasing resistors (current going through 680Ω resistor). b/ Find the maximum supply power and maximum efficiency of the amplifier. c/ Find the maximum dissipitated power on each transistor. d/ If a signal input is vin (t) = 15 SinΩt (V), Find the efficiency of the amplifier.
Problem 1 [Maximum Possible Points 34) A power controller is used supply the required power to the load as shown below. The source voltage is vs(t) = 170 cos(3771) V. Assume the resistance of the load is 1092. The load voltage is given by: (1) = 60 + 20 sin(377t - 20°) - 10 sin(1131t+15°) + 3 cos(1885t +40°) - 0.2cos(2639t) i () von Power Controller (1) Figure 1 For this controller determine the following a) DC and RMS of...
NAME IIl. (34 pts).) The circuit below is a power amplifier. It should provide a power output of 12 Watts to an 8 Ohm load. The input resistance of the power amp (as seen by the signal source Vs) should be 20k Ohms. The maximum value of the signal source Vs is 0.5v rms Determine (a) The minimum values of the power supply voltages needed (+Vcc and-Vcc), (b) The values of resistors R1 and R2, (c) The minimum slew rate...
1. An amplifier has a voltage gain Av equal to 20. An input voltage v of 150 mVs applied to the input of the amplifier. What is the output voltage vo? Rs 2. For the amplifier in Problem 3, assume the input current i is 2 mA, and the output current io is 10 mA. What is the current gain A, ? Assuming the amplifier as described above has an output resistance is 0 ohms, what is the load resistance...