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Two ideal p-n junction diodes are connected in series across a 1 V battery such that both of them are forward biased (draw this). One diode has I0 = 10-5 A and another I0 = 10-8 A. Calculate the current through the circuit and the voltage drop across each diode at 300K.
a) the total charge in the device at t = 3 s, assume q(0) = 0 (round to three decimal places) b) the power consumed by the device at t = 1 s (round to three decimal places)
Suppose we measured a resistance of about 1.4 ? across a graphite stick, used calipers to measure the cross-section of the stick (7 mm by 5 mm) and measured the distance between the multimeter test leads (54 mm).
Explain how energy efficiency can be traded off for bandwidth efficiency by multilevel modulation schemes. Rank the following modulation schemes: 64-ary PSK, Binary FSK, QPSK in terms of bandwidth efficiency and energy efficiency.
Draw the correct circuit to serve a 7.2kv single-phase load from a 2.4kv source. If the laod is 50kVa at pf=.8 lagging, compute the secondary and primary phasor currents. is this a step-up or step-down application
An analog AMPS cell phone channel at 900MHz carrier has a carrier amplitude of 4V and is a modulation signal m(t)=Bmsin(10000*pi*t). The amplitude of the modulating signal is 2V and the peak frequency deviation was found to be 10kHz
Determine the transfer function of the second-order (2 poles) lowpass Butterworth filter with a 3 -dB cutoff frequency of 5 kHz. Design it using the Sallen-key Lowpass filter configuration, find all the values of the circuit element
at no load and rated volatge, the speed is 1200rom, and the armature curnt is 3ampere. at fullload and rated volatge ,the line curent is 47 ampere and bcuz of aarmature reaction the fluc is 4% less that its no load value 1) what is the full no loa..
Finding values of a composite discrete time signal, A discrete time signal x(n) = x(n-1) + x(n-3) with initial conditions x(0) = 0, x(1) = 1 and x(2) = 2 is examined and the first 51
We use the time constant to characterize transients in electric circuits. In physics, the half-life is often used to characterize the exponential decay of physical quantities such as radioactive substances.
Sizes are given as the diameter of the pizza in inches. The cost of a pizza is based on the size. Bob would like to know which size of pizza has the lowest cost per square inch. a. Identify the inputs and outputs for this problem.
Analysing spectrum anlyser output, A spectrum analyzer is connected to an unknown signal. The spectrum analyzer displays the power level of signals in dBm vertically and frequency horizontally. The spectrum of the unknown signal creates the follow..
A pn junction with Nd=4x10^16 cm^-3 and Na=3 x 10^15 cm^3 experiences a reverse bias voltage of 1.6V (a) Determine the width of the depletion region and the junction capacitance per unit area
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