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The junction capacitance of a silicon pn junction is 1.83 pF at T = 300 K when the anode and cathode are held at the same voltage. The concentration of donor atoms in the n-region of the junction is
Determine the conductivity of silicon at T = 300 K if it is doped with donor impurity atoms at a concentration of 1.25*1016 cm-3. Assume that the electron and hole mobilities are 1350 cm2 / V-s and
The built-in voltage of a GaAs pn junction diode is 1.25 V when the diode's temperature is T = 320 K. The cathode region of the diode is doped with phosphorus at a concentration of 1017 cm-3. Determ
After t = 0, the current entering the positive terminal of a flashlight bulb is given by: i(t) = 2(1 - e^ -10t) A and voltage given by: v(t) = 12e^-10t V Determine the maximum power delivered to the
Given a course voltage of 10V, a source resistance of 10 ohms, a 10mH inductor, and a 5nF capacitor, choose a load resistance and draw a circuit that will have an underdamped (decaying sine wave) se
A system has the following input/output relation: y(n) = x(n) + .5 y(n -1). If the input x(n) is the sinusoidal signal shown in problem 1.32(d) (Above), the steady-state output will have the followi
Assuming dopant atoms are uniformly distributed in a silicon crystal, how far apart are these atoms when the doping concentration is a) 10l5 cm-3, b) 1018 cm-3, c) 5times1020 cm-3. Estimate the resi
A circuits is needed to realize the transfer function \(T_{v}(s)=\pm \frac{(s+125)(s+500)}{(s+250)(s+1000)}\) (a) Design a circuit using two OP AMPs (b) Design a circuit using only one OP
How do we determine the overall gain of a cascaded system of AV1, AV2, and AV3 in dB, in absolute What do we do if all the gains are given in dB, absolute and dB
Design the electrical system for a shopping center with 500,000 square feet at least 30 spaces of three different sizes (5,000, 10,000 and 25,000 sf). They may be offices, banks, restaurants and sho
Write an ABEL program for a combinational logic function with five input bits N4-N0 representing an integer between 0 and 31 and two outputs M3 and M5 to indicate if the number is a multiple of 3 or
Determine the position x and the tension in the cord that is required for equilibrium. The cord passes through the smooth ring at B and has an unstretched length of 6ft and stiffness of k = 50lb/ft.
An electric field in free space is given as E=(x,4z,4). Given VA=10v, calculate the electric potential difference VAB & VB, where A is (1,1,1) and B is (3,3,3), assuming V=9 at (2,4,6).
(1) How much power is dissipated by a 2.4 k resistor in series with a 12V power supply (2) Determine the result of dividing the squares of 12V by 3.3 k ohms.
1) Plot the impedance with respect fo frequency from 1Hz to 10MHz 2) Capacitor must be less than .1 of a 480 ohm resistor to be a good bypass capacitor for that resistor. What range of frequencies c
A pn junction diode has Vd= 690 mv, C=6pF, Id= 500 microamps, Vt=.0259 V. It also has C=4pF when Id= 100 microamps. Derive the complete high-frequency model when Vd=610mV.
1) Ohm's. Law is considered one of the key foundation in electronics . Why (2) Why do we have to build and test circuits when we have simulation tools
y''(t) = %u2013 25 y, subject to the two initial conditions y(0) = 0.2 and dy(0)/dt = 0. You will need to use integrating op amps for this design. b)What function will the output voltage y(t) be
An nMOSFET and pMOSFET are fabricated with substrate doping concentration of 6x1017/cm3. The gate oxide thickness is 5 nm. (a) Find Vt of the nMOSFET when n+ poly-Si is used to fabricate the gate e
You also do not need to consider radiation heat transger in the calculations. However, you should consider how the resuts for the no-fin cases might change if radiation heat transfer is included in
A current element of length 1cm is located at (1m, 3m, 4m) in free space and carries a current of 20mA along ay. An infinitely long filamentary current of 12A along az passes through the coordinate
Using SR Flip-flops and NAND gates, design a system that outputs 1 if it takes an even number of clock cycles to recognize the pattern 11-0-101. Otherwise it outputs 0.
Water is flowing out of a tube at a near constant volumetric flowrate, V .If a graduated cylinder is used to collect a certain volume, v , of the water, and a timer is used to measure the time, t, r
If voltage and resistance are measured as a means of indirectly measuring power, show again that if the relative uncertainties in the direct measurements are +2%, that the relative uncertainty in th
a) Design an op amp circuit that will create an output voltage y(t) that is the solution to the differential equation y''(t) = 25 y, subject to the two initial conditions y(0) = 0.2 and dy(0)/