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A silicon sample is 2.5 mm in length, 1.2 mm in width and 0.7 mm high. It has been doped with Boron with a doping density of 8.5 x 1016 cm-3. Assume the temperature is 300°K.
The electron distribution in the conduction band peaks at energies close to the conduction band edge. Using the Boltzmann approximation, find the energy in the conduction band (as a function of temp
An opamp based integrator is measured at 1KHz to have a voltage gain of -100 V/V. At what frequency is its gain reduced to -1V/V. And, what is the integrator time constant
Design a full wave unregulated dc power supply having an input of 220 V rms 60 Hz and an output voltage maximum of 19.5 V and a minimum of 15 V. This power supply will be needed to provide power to
Find the largest possible number of independant vectors v1=column[1 -1 0 0] v2= column[1 0 -1 0] v3=column[ 1 0 0 -1] v4= column[ 0 1 -1 0] v5= column[0 1 0 -1] v6= coolumn[ 0 0 1 -1] note all are c
A balanced Y-connected load of 100 + j50 Ohm is connected to a balanced three-phase source. If the line current is 42 A and the source supplies 12kw, determine (a) the line voltage; (b) the phase vo
Find the intrinsic gain of an NMOS Transistor fabricated in a process for which kn'=200 uA/V^2 and V'A =20 V um. The transistor has a 0.5-um channel length and is operated at Vov=0.25 V. If a 2-mA/V
three light bulbs (P1= 30W, P2=40W, P3=50W) are connected in series to a 120v source find the current i through the bulbs. Each bulb is rated 120 volts. how much power is each bulb absorbing do they
The output is to be 1 if the input is a valid BCD code. If any other input combination occurs, the output should be 0. Implement the circuit using: a. Any gates available in the lab.
A current density J¯ = ˆy sin(2x) A/m^2 is subject to a z-directed magnetic field H¯ = ˆz10 A/m. a. Assuming the vacuum permeability (i.e. a non-magnetic medium), what is the magne
Determine the values of the lumped parasitic capacitor and inductor in a 5 ft long two-wire transmission line with air dielectric Each wire has a diameter of 1 mm and the separation between th
A new 24-bit processor is being designed for operation in a cell phone (you can assume the word-size is 24 bits). Suppose the following memory values are being stored in memory that is organized whe
Computer the following assuming each number is a two's complement number and indicate the inputs and final result in decimal. Also, indicate if the number overflows. a. 01 + 1011 b. 11 + 01010111 c.
Construct a truth table for a three variable function that includes minterms 1,4,6,7. Construct the corresponding K map and use it to find a minimal SOP expression for F.
At the point you can check a point or two on the V-I curve and confirm that the plot is equivalent to the linear plot in Part 1. Describe a specific measured point on the curve and what it represent
Assume that when you measure a power supply voltage through a series of 1 Mega Ohms the voltage drops by half compared to the direct measurement. What is the input resistance of the meter
An oscilloscope shows the period of an ac waveform to be 3.5 horizontal divisions when the timebase control is set to "10 ms/Div". What is the measured period and frequency of the waveform
A series circuit has a 9V voltage source with 1 k-ohm internal resistance. Fixed resistors in the circuit provide, 200-ohm and 400-ohm resistance, respectively. To what resistance should a 300-ohm
Discuss the between continuous-time and discrete signals and their analysis imposed by the way discrete-time signals and systems are generated. Discuss what is meant by "nonlinear filtering".
Does the carrier frequency of a system have an impact on small scale fading and shadowing. when moving over a distance x,will variations in received signal power be greater for low frequencies or hi
A signal is sampled every 1ms for 20ms, with the following actual values of the analogue voltage at successive sampling times. Plot the values of the voltage recorder by a 5 volt, 4 bit ADC assuming
If a signal is digitized at a sampling rate of 20kHz centered at 10 kHz, at what frequency would a signal at 22 kHz appear
a). Write the mathematical expression for a waveform that alternates sinusoidally between between -5 mA and 0 mA with a frequency of 1kHz.b). Repeat,but for a waveform alternating sinusoidally betwee
Electrons in solids have negative potiental energies with energy of a free electron (this means that these electrons needs to gain energy to liberate themselves from the solids ).
An electron is confined inside a potential well with infinite walls. The width of the of the wells = 5nm. What is the probability of finding a electron within 1nm from either wall if the electron is