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A 1H, 400-Ω relay coil is to be operated from a 30-V dc supply. The switch controlling the relay has platinum contacts. Design an R-C contact protection network for this circuit.
An AM signal has a carrier frequency of 3 MHz and an amplitude of 5 V peak. It is modulated by a sine wave with a frequency of 500 Hz and a peak voltage of 2 V. Write the equation for this signal and calculate the modulation index.
Determine the load resistance and power for critical conduction mode and determine the duty ratio required to maintain a 1 V output as resistance increases by a factor of 10 from the critical conduction load.
use an ideal op amp to design an inverting integrator with an input ressistanceof 10 kilo ohm and an integration time constant of 10^-3. What is the gain magnitude and phase angle of this circuit at 10rad/sand 1rad/s.
A 60-watt outdoor lightbulb is advertised as having an average life (i.e. MTTF) of 1,000 operating hours. However, experience has shown that it will also fail on demand an average of once every 120 cycles.
1. Two students are discussing how programmable thermostats work. Student A says that a piece of material within the thermostat changes length depending on moisture content of the air and that temperature is related to this change in moisture.
The integer array and the size of the array are passed into the function through parameters. Do not worry about includes. This is only a function, so there is no main routine. The function should fill the array with valid inputs.
The program is to input the number character-by-character and then assemble them together so that the original number is put into a floating point variable and displayed back to the monitor.
Explain the structure and nature of the ionosphere with reference to daily, seasonal and long-term changes and explain the modes of propagation of radio waves of different frequencies
Design a PD Controller G_c(s) = K_p + K_d*s using the root-locus method such that the closed-loop system has a damping ratio, zeta = 0.7 and a natural frequency, omega_n = 0.5 rad/sec.
Assume the factory described in the previous problem is fed from a line having an impedance of 0.02 + j0.16-ohm. The voltage at the factory is maintained at 480 V(rms). Find the average power loss in the line before and after the load is added.
Use Shannon's expansion theorem to implement the following function using a 2:1 MUX and other non-MUX gates you may need. LetZ be your select bit and manipulate the formula directly (i.e.don't use the graphical trick).
Given the 16-bit value 1010 0101 1001 1000, what operation must be performed, and what operand is needed, in order to (a) set the most significant 8 bits to 1s (b) clear the bits in even positions (the left most bit is 15 andthe right most bit is 0) ..
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