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3. When a load resistance of Ri - 1.5 is connected to the output of a...
The output voltage of a voltage amplifier has been found to decrease by 40 % when a load resistance of 4 kΩ is connected. What is the value of the amplifier output resistance?
Problem 7 The output voltage of a voltage amplifier has been found to decrease by 40 % when a load resistance of 4 k2 is connected. What is the value of the amplifier output resistance? Problem 8 Determine the output voltage vo of the circuit shown in Figure 8. The answer must be in function of the input voltages. Data: + Vcc= + 22 V Ri= 5k R2 = 3 k12 R3 = 10 k12 R4 = 70 k12 110...
please write neatly 1. The amplifier in Figure 1 has a voltage gain of A 200. input resistance Ri 50ks2, and output resistance Ro-5000. Find the values of R, R3, C, and L so that the oscillation frequency is Amplifier R AV (a) Voltage-controlled voltage source Figure 1 1. The amplifier in Figure 1 has a voltage gain of A 200. input resistance Ri 50ks2, and output resistance Ro-5000. Find the values of R, R3, C, and L so that...
An amplifier has an open-circuit voltage gain of 160. With a 10 kΩ load connected, the voltage gain is found to be only 80. Find the output resistance of the amplifier. Ro=
A battery of internal resistance 0.5 ohms is connected to a load of resistance 4 ohms. If the battery has an EMF of 6.0 volts, what is the terminal voltage when it is under load?
7. For a particular voltage amplifier connected in a feedback loop, measurement of the output resistance before and after the loop is connected shows a change by a factor of 100. (a) (5 pts) Is the output resistance with feedback higher or lower? (b) (5 pts) What is the value of the loop gain ? (c) (5 pts) If Rof is 100 Ω, what is Ro without feedback?
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...
1.14 An amplifier with a voltage gain of +40 dB, an input resistance of 10 kS2, and an output resistance of i kn is used to drive a l-kΩ load. What is the value of Apo? Find the value of the power gain in decibels. 1.14 An amplifier with a voltage gain of +40 dB, an input resistance of 10 kS2, and an output resistance of i kn is used to drive a l-kΩ load. What is the value of...
A force sensor has as its output a change in resistance. The sensor forms one leg (Ri) of a basic Wheatstone bridge. The sensor resistance with no force load is 200 2, and its static sensitivity is 0.2 ОЛ. Each arm of the bridge is initially 200 Ri R2 0) 14 13 R3 1s o O V-10 V Determine the bridge output for applied loads of 100, 200, and 350N. The bridge is operated as a deflection bridge, with an...
A transducers characterised by a voltage of 1V rms and a resistance of 1M ohm is available to drive a 10 ohm load. Sketch a diagram and answer the following: If connected directly, what voltage and power levels result at the load. Estimate the results of the problem if a unity gain buffer amplifier with (Avo=1 V/V, Ri>>Rs, and Rl>>Ro) is interposed between source and load.