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Three voltage amplifiers are in cascade as shown in Figure with various amplification factors. The 180 degree phase shift for negative feedback actually occurs in the basic amplifier itself.
(a) Determine the value of β such that the closed-loop voltage gain is Av f = Vo/Vs = -120.
(b) Using the results of part (a), determine the percent change in Av f if each individual amplifier gain decreases by 10 percent.
Compare the equivalent and nominal π-model for the line; At the full load the line delivers 800 MW at 0.9 leading power factor and at 480 kV to the receiving end load. Calculate voltage regulation and efficiency of the line
How does a transistor switch compare to a mechanical switch. In other words, a mechanical switch when it is ON has zero impedance. What about the transistor switch.
Two concentric cirlces have radii of 5cm and 48mm. A particle traveling at 0.25 m/s smashes into the inner surface of the outer sphere. If the potential of the spherical capacitor is 50 V, what is the magnitude of charge picked up by the particle
Develop an I/O port decoder, using a PLD, that generates 16-bit I/O strobes for the following 16-bit I/O addresses: 1000H-1001H, 1002H-103H, 1004H-1005H, 1006H-1007H, 1008H-1009H, 100AH-100BH, 100CH-100DH, and 100EH-100FH.
Determine the trigonometric Fourier series representation for the signal f (t) = 2 -1/2
The quiescent collector current, ICQ, will vary no more than 10 percent as β varies from 20 to 50.
A bar of p-type silicon, has a cross-sectional area A = 10-6 cm2 and a length L = 1.2 x 10-3 cm. For an applied voltage of 5V, a current of 2mA is required. What is the required (a) resistance, (b) resistivity, and (c) impurity doping concentratio..
Four Resistors are connected in parallel. what is the equivalent resistance if their individual resistances are r1 =100 Ohms ±5% tolerance r2 =470 Ohms ±5% tolerance r3 =330 Ohms ±10% tolerance r4 =1000 Ohms ±5% tolerance
Determine the hysteresis loss if the apparatus isconnected to a 60 Hz source whose voltage is such as to cause theflux density to be 62 percent of it's rated value. Assume that theSteinmetz exponent is 1.4.
Find the voltage across the coil the instant after the switch is closed. - What is the final value of the current iL?- How much time must pass before iL reaches 10 mA?
A 40-hp, 500 V, 1200-rpm DC shunt motor has rotationallosses of 2000 W at rated speed. The armature resistance is 0.46Ω and the field resistance is300Ω. A) Calculate the armature current when the motor is delivering rated load at rated voltage and..
Interface TTL logic to 120 VAC lamp. In this part of the lab, you will interface lowpower solid state electronics to the "outside world" by switching the 120 VAC lamp on and off using the AND gate from the previous experiment.
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