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When pointing out safety problems, an engineer is rightfully concerned about maintaining his job. However, how effective is an anonymous memo? Can anyone be expected to pay attention to something that a person won't sign?
Assume all your standard value resistors are accurate to 0.1%. What would be the worst-case variation in overall resistance for your design (both high and low). How might you construct a resistive network using the smallest number of standard resis..
1. The closed-loop transfer function of a system is T(s) = 11.1(s +18)/ ((s + 20)(s2 + 4s +10)) Plot the poles and zeros of this system and discuss the dominance of the complex poles. What overshoot for a step input do you expect
A differential amplifier has a differential gain of 500 and negligible common-mode gain. The input terminals are tied to ground through 1-kΩ resistors having tolerances of ±5 percent. What are the extreme values of the output voltage caused by a ..
Design a circuit that divides the clock frequency by M = 14 and exhibits symmetric phase. Because M is even here, which simplifi cations can be made with respect to the approach described in Section 14.5
What are reciprocal counters? How does a reciprocal counter provide a much higher resolution even when the frequency of the signal is very low?
A semiconductor has Nc=10^19 cm^-3, Nv=5x10^18 cm^-3 and Eg=2eV. If it is doped with 2x10^17 acceptors (fully ionized), calculate the electron, hole and intrinsic carrier concentrations at 627 C. Sketch the simplified band diagram, showing the pos..
A 120V, 60Hz AC induction motor is in parallel with a power factor correction capacitor. The capactior has a value of 50 micro Farads and produces a minimum line current of 2 ohms. Determine the running impedance of the motor in cartesian coordina..
Convert the following degrees to radians: 45°, 60°, 120°, 270° , 178°and 221°.
An N-type silicon substrate with the doping density of 1x10 15 cm-3 Arsenic is to be converted into p-type by Boron diffusion, so that the resistivity at T=75C is 5 O-cm. All atoms are fully ionized.
Explain what line and load regulation mean. Should they be high or low if you want a quality power supply?
Polyethylene with ?_r = 2.25 is used as the insulating material in a lossless coaxial line with a characteristic impedance of 50 Ω. The radius of the inner conductor is 1.2 mm.
1-mH inductor carries a current: i(t)=50*t^2*exp(-2*t) inunit of mA. Determine the voltage, power, and energy of the inductor as a function of time.
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