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A mixer is used in a short-wave super heterodyne receiver. The receiver is designed to receive transmitted signals between 5 and 25 MHz. High-side tuning is to be used. Determine the tuning range of the local oscillator for IF frequencies varying between 400 kHz and 2 MHz. Plot the ratio defined by the tuning range over this range of IF frequencies as in Table 3.1.
A mealy sequential circuit has one input (x) and one output (z). Z = 1 if and only if the most recent input, combined with the preceding 3 inputs, was not a valid BCD encoding of a decimal digit; otherwise, z = 0.
The noise signal is measured to be 1.35 V. The output difference signal is 3.95 V and the common-mode output signal is0.95 mV. Determine the common-mode gain, the differential mode gain, the CMRR, and the CMR (in dB) for the amplifier.
A farmer measures the perimeter of a rectangualr field. The length of each long side of the rectangle is found to be 38.44 m, and thelength of each short side is found to be 19.5 m. What is theperimeter of the field
Design an npn current mirror for this purpose. Neglect the base curents.
Suppose the voltage across a telephone line at the subscriber drops from 48V to 10V when the phone goes off hook. If the telephone instrument has a resistance of 200 ohms when off hook and represents an open circuit
In problem 1 and 2, find a system of differential equations and initial conditions for the currents in the networks given by the schematic diagrams: the initial currents are all assumed to be zero. Solve for the currents in each branch of the netw..
Design a circuit with four single-bit inputs X, Y, T, and Z, but only one single-bit output E. A two bit control code word S0S1 selects which of the four inputs is propagated to the output (the selection code is not unique).
2a.) Find A dot B if A = 3e1+ 5e2-e3 and B = e1 -e2+ e3 if e1 dot e1 = 2, e2 dot e2 = 3, e3 dot e3 = 5, e1 dot e2 = -1, e1 dot e3 = -3, e2 dot e3 = 2
We can model the human body as a voltage source in series with a high resistance, let's say 10mV in series with 100kOhms. If we use an instrument with 1MOhm input resistance, what voltage value will we measure
A dc motor is driving a constant-torque load. If the armature voltage of the motor increases by 20%, calculate the percentage change in no load speed.
Write the formula for the magnetization volume current density J M and magnetization surface current density JMS in terms of magnetization vector M. 4. A sphere has permanent magnetization where is a positive constant.
Consider a permanent-magnet dc-motor with the following parameters: Ra=0.35Ohms, La=1.5mH, Ke=0.5V/(rad/s), Kt=0.5Nm/A, and Jm=0.02kgm^2. The rated torque is 4Nm. This motor is supplies by a switch-mode dc-dc converter
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