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A phosphorus diffusion has a surface concentration of 5 x 10^18/cm^3,and the background concentration of the p type wafer is 1 x 10^15/cm^3.The Dt product for the diffusion is 10^-8 cm^2.a)Find the junction depth for a Gaussian distribution.b)Find the junction depth for an erfc profile.c)What is the sheet resistance of the two diffusions?d)Draw a graph of the two profiles.
1. Draw the frequency spectrum at the output of the first balanced modulator. 2. If the filter is a low pass filter, draw the frequency spectrum at the output of the filter and amplifier.
For a state machine, suppose the propagation and contamination delays of the next state circuit are 20nsecs and 5nsec, respectively. For the registers to store the current state, the propagation delay, set-up time, and hold time are 4 nsec, 2nsec,..
an 8 pole synchronous motor produces a full load torque of 25 foot pounds, fed from a 60hz source and is now operating at 60% eff. What is the energy cost if the motor ran for a 8000 hrs/yr and the electrical energy cost were $.09/kWh.
A small object with charge Q1=6nC is located at the origin. A second small object with charge Q2=-5nC is located at m. What is the net electric field at location A m due to Q1 and Q2
Three single-phase transformers are connected in a wye/delta configuration. Each single-phase transformer has an identical number of turns in the primary and secondary windings. If a line-to-line voltage of 480 V is applied on the wye windings
(1) check a diode out with a regular ohm meter (2) Give an example of where a half wave, full wave or bridge rectifier is used. (3) What sizes of transformers are used for power lines
A four-pole dc generator has magnetic flux of 0.06 Wb/pole, a rotational speed of 1800 rpm, full load current of 40 A, and is simplex lap wound. The generator efficiency is 91%. Pole face coverage is 78%.
Design a square wave generator that will provide a 4kHz square wave with a positive peak vlaue of +10V and negative peak value of -10V. You may use any number of op amps, resistors, and capacitors in this design.
Given a DSP system in which a sampling rate of 8000 Hertz is used and the antialiasing filter is a second order Butterworth low pass filter with a cutoff frequency of 3.2 KHz determine a. The percentage of aliasing level at cutoff frequency
A hydroelectric dam has a penstock that discharges 10^5 kg/s of water. The head of the dam is 80m. a. compute the volume of the discharged water per second (flow rate). b. compute the power of the water entering the turbine
Calculate the instantaneous power absorbed by the resistor, the instantaneous power absorbed by the capacitor, the real power absorbed by the resistor, the reactive power delivered by|the capacitor, the load power factor.
A detector with charge collection time of 150 ns is used with a preamplifier whose input circuit can be represented by the parallel combination of 300 pF and 10,000 ohms. Does this situation fall in the category of small or large collection circui..
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