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Repeat the oscillator design of Example 13.4 by replacing the dielectric resonator and microstrip feedline with a single-stub tuner to match o a 50 load. Find the Q of the tuner and 50 load, then compute and plot
Compare with the result in Figure 13.12b for the dielectric resonator case
A shunt motor has the following ratings: 75 kW, 240 V, 1750 rpm, 300 A. The motor is supplied with 240 V source (constant) at its armature terminals. Its armature resistance is 0.0144 [O]. At rated current Ia = 300 A, the motor runs at rated speed..
Design it to give an output that is 1/3 of the supply voltage. Furthermore, neither the power ratings of the resistors nor the current rating of the supply are to be exceeded. The voltage output of the divider must not change by more than 1% when ..
For a system, we learn the following three properties: (1) Memoryless, (2) Time-variant, (3) Linear, and (4) Casual. Determine which of these properties hold and which do not hold for each of the following continuous-time systems.
Combine the impedances and find phasor current in the two circuits by using Phasor Ohm ( I= V/Z), then find voltage across each element (eg: VR = I * ZR ). Setting magnitudes equal is the same as setting the square of the magnitudes equal.
design a decimal adder for digits represented in the excess-3 code. Show that the correction after adding two digits with a 4-bit binary adder is as follows (a) The output carry is equal to the carry from the binary adder
How many voice channels are carried by a E1 transmission given 8 kHz sampling and 8 bit words? Why is an end of frame marker always required in a digital telephony system?
At an operating frequency of 5 GHz, a 50-lossless coaxial line with insulating material having a relative permittivity r = 2.25 is terminated in an antenna with an impedance ZL = 150 Use the Smith chart to find Zin. The line length is 30 cm
During each revolution of the cam, a follower rises and falls 20 mm. During each follower up-stroke, the follower resists a constant force of 500 N. During the downstrokes, the force is negligible. The inertia of the rotating parts (including a sm..
If natural gas use steadily increases by 6 percent every year and in 2009 the United States consumption of natural gas was 21 Quads, how much natural gas will be consumed annually in 12
Consider a myelinated fiber in which th nodes of Ranvier are spaced every 2mm. The resistance of the axoplasm per unit length is r(initial) = 1.4x10^10 omega/m. The nodal capacitance is about 1.5x10^-12 F.
Design a circuit using a thermister in a Wheatstone bridge and a comparator to turn on a furnace when the temperature drops below 70 ?F. Use real components selected from an online distributor, such as Digi-Key or Mouser
An Amplifier has an input voltage of 10mV rms and an output voltageof 5V rms across a 10-Ω load. The input current is 1μArms. Assume that the input and output impedances are purelyresistive. Find the input resistance.
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