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The capacitance of a MOS structure is shown in the attached figure. (n+ polysilicon gate, SiO2 insulator, Si substrate). The plot is not necessarily to scale.
(A). Is the Si substrate n-type or p-type? Is the channel n-type or p-type? Is it NMOS or PMOS? Explain.
(B). Given substrate doping of 1E16cm-3(you will have to identify the doping type from (A)), and oxidethickness Tox = 200A°. Find Ci and Cmin, which are the maximum and minimum MOS capacitance values.
(C). Qualitatively plot the C-V curve for the same device measured at high frequency. Which operation region (accumulation, depletion, inversion) is different? Explain the difference.
Three-phase inverter has Y-connected load of 10 ohm and 23mH inductance. The inverter frequency is 60Hz and the dc input voltage is 200v. Calculate line voltage rms? , Phase voltage, rms?
A battery has a short-circuit current of 20 A and an open-circuit voltage of 12 V. If the battery is connected to an electric bulb of resistance 2 ohm, calculate the power dissipated by the bulb.
The magnetic field of the earth is approximately 3 × 10-5 T. At what distance from a long straight wire carrying a steady current of 10Ais the field equal to 10 percent of the earth s field? Suggest at least two ways to help reduce the effect of el..
a. Given a circuit with a VCVS (A=1000) in series with a 100K ohm resistor, convert this circuit to a VCCS in parallel with a resistor R. b. Connect both circuits to a 25K ohm load resistor and show they produce the same behavior in the load resis..
Block diagram reduction technique find closed loop transfer function of the system whose block diagram - determine transfer function using Mason's gain formula and given parameters.
They melt when 3.9 × 104 J of heat is added to A and when 11 × 104 J is added to B. (a), (b) Determine the latent heat of fusion for the substance from which each object is made. (c) Find the heat required to melt object A when its mass is 7.4 kg.
A dielectric sphere has radius r = 2 and the material inside the sphere has dielectric constant er2 = 4. THe region outside the sphere where r > 2 is free space and the electric field there is E1=(16r+2+8\phi). Find electric field E2 inside the sp..
A base stationcellular communicationsystems lossless antenna has a maximum gain of 16 dB (above isotropic) at 1,900 MHz. Assuming the input power to the antenna is 8 watts, what is the maximum radiated power density (in watts/cm^2)
Consider a p-type Si sample with a resistivity of 0.5 · cm. The doping level is uniform throughout. In a certain portion of this sample, there is an electric field of a magnitude 1000 V/cm. Estimate the magnitude of a) the electron drift velocit..
The manufacturer of commercial jets has a cost index equal to 94.9 per aircraft in 2009. the anticipated cost index for the airplane in 2014 is 106.8. the avaerage compound rate of growth should hold steady for the next 15 years.
The maximum radius a falling liquid drop can have without breaking apart is given by the equation: R = sqrt((sigma/gp)) where sigma is the liquid surface tension, g is the acceleration due to gravity, and p is the density of the liquid.
The distribution line connecting the source to the load has negligible impedance. Load 1 is purely resistive and absorbs 60 kW. Find the per-phase impedance of load 2 if the line voltage is 415.69V(rms) and the impedance components are in series.
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