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Briefly trace how the demands of electronic circuit technology have impacted on the development of ceramic ‘packaging' technology. An alumina substrate of dimensions 1 cm 1 cm 0.5 mm carries a device dissipating 20W. If the substrate is bonded to a metallic heat sink, estimate the steady state difference in temperatures between the surface carrying the device and the heat sink. The thermal conductivity of alumina may be taken to be
Many multiprocessors distinguish between a cache block that is really shared and one that exists in the clean state in exactly one cache. The addition of a "clean and private" state eliminates the need to generate a bus transaction on a write to s..
For a unity feedback system with forward path transfer function (Open-loop transfer function) as follows G(s) = 5000/ s(s + 75) derive closed-loop transfer function
An infinite planar sheet of charge, with surface charge density rho_s = 3 µC/m^2, is positioned in the x-y plane. Find the E and D fields above and below the plane, assuming that the relative permittivity of the medium
A 2.0 kg particle moves along the x axis. Its position varies with time according to x = t + 3.0t^3, Where x is in meters and t is in seconds. (a) Find the work done on the particlein the interval t = 0 to t = 1.70s.
How do you design a 5x32 decoder circuit by using only the minimum number of 2x4 decoders, with enable
The voltage drops across three resistors in series are measured to be 10.0V, 15.0V, and 25.0V. If the largest resistor is 47.0 ?, what is the value of the smallest resistor?
A balanced Δ connected load of 15 + j9 Ω/phase is being fed by a Δ connected source. Each of the three lines feeding the load from the source has 0.5 + j0.3 Ω impedance. The voltage at the source is 400 VLL.
Find its unit step response when the ICs are y[-2] = 2 and y[-1] = 1. Be sure to identify the three parts of the solution: zero-input, transient zero-state, and steady-state zero-state.
Define the concept of the (HAMMING) distance of a code and describe its importance for error recognition and correction. What is the significance of the inequality 2k = n + 1 (k check bits; n is the length of the code word).
Assume Vcont can vary from 0 to VDD. Prove that the voltage drop across the loop filter resistor reaches roughly 1.6πVDD if no second capacitor is used.
A power transistor for which Tjmax=180degrees Celsius can dissipate 50Watts at a case temperature of 50degrees. If it is connected to a heat sink using an insulating washer for which the thermal resistance is .6degrees Celsius/Watt
A Si p-n-p transistor has impurity concentrations of 5´1018, 2´1017, and 1016 cm-3 in the emitter, base, and collector, respectively. The base width is 1.0mm, and the device cross-sectional area is 0.2 mm2.
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