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If the series resistor of Prob. 5-1 has a tolerance of ±5 percent, what is the maximum zener current?
Prob. 5-1
An unloaded zener regulator has a source voltage of 24 V, a series resistance of 470 ?, and a zener voltage of 15 V. What is the zener current?
What is the inductance L of the primary of a transformer whose input is 220 V at 60 Hz and the current drawn is 5.8A? Assume no current in the secondary.
Design a common-emitter BJT amplifier with a gain of -100 (well above 3dB point) and a 3dB point at 100Hz. Assume beta = 100, Ic (quiescent) = 1mA, Vcc=20V. You can omit the output capacitor, but should bypass your emitter resistor.
Suppose that we want to determine how many of the bits in a six-bit unsigned number are equal to 1. Design the simplest circuit that can accomplish this task.
If 3.0 V are across the resistor, compute: a) the current in the inductor b) the inductive reactance XL c) the voltage across the inductor Vl d) the source voltage Vs e) the phase angle between Vr and Vs
Steel rods AB and BC each have a diameter of 5 mm. If the load of p= 2 kN is applied to the ring, and if ? = 60°, determine the following:
Determine the angular velocity and angular acceleration of the disk if beta is constant at 30 degrees.
A house is maintained at 1 atm and 24°C, and warm air inside a house is forced to leave the house at a rate of 150 m3/h as a result of outdoor air at 5°C infiltrating into the house through the cracks determine the rate of net energy loss of the h..
Obtain the numerical values for a simulation starting from the steadystate solution and perturb the value of X3 by 20%. Discuss your results.
Determine the primary current when rated current in the 230 volt winding is at unity power factor and the rated current in the 575 volt winding is at .5 pf lagging. Neglect all leakage impedance drops and magnetizing current.
A generator uses a coil that has 110 turns and a 0.475 T magnetic field. The frequency of this generator is 43.0 Hz, and its emf has an rms value of 230 V. Assuming that each turn of the coil is a square (an approximation)
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.
a) Given that the refractive index of water is about 1.33, what is the polarization angle for light traveling in air and reflected from the surface of water b) Consider a diver in sea pointing a flashlight towards the surface of the water.
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