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Questions:
(a) Suppose a 100 kHz switching power supply.
(i) Evaluate the magnitude of the wave impedance of the radiated field of a very short wire in the switching power supply at a distance of 15 cm if it carries the fundamental frequency of the switcher of 100 kHz.
(ii) Evaluate the magnitude of the wave impedance of the radiated field of the transformer in switching power supply at a distance of 15 cm.
(b) Model the shield on a 2-m personal computer printer cable as a monopole antenna (with the metallic structure of the computer as the ground plane) and estimate the maximum radiated emissions at a measurement distance of 3 m if the voltage of the shield attachment point with respect to the metallic structure is a 1-mV, 37.5-MHz signal.
(c) Check a typical personal computer having a metallic enclosure and list the "penetrations" that allow signals from the inside to pass to the outside, avoiding the shielding of the metallic enclosure.
Q. Consider a 1-bit version of the digital comparator shown in Figure. Note that the operation of this circuit is such that whichever output is 1 gives the desired magnitude compar
Q. Linear and position invariant? Assume that the model illustrated below is linear and position invariant. Also the noise and the image are uncorrelated. Show that the powe
1) Use plot of the stock return and consider the Autocorrelation Function to determine the auto-regressive structure of the data and explain why you think the return is stationary
Q. A transistor has a base current i B = 25 µA, α = 0.985, and negligible ICBO. Find β, iE, and i .
Q. A three-phase, 600-kVA, 2300:230-V,Y-Y trans-former bank has an iron loss of 4400Wand a full-load copper loss of 7600 W. Find the efficiency of the transformer for 70%full load
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special function register
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