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Explain how a p- n junction diode may be used to detect optical radiation. Distinguish between the photoconductive and photovoltaic modes of operation.
A photodiode is to be used, without applied reverse bias, to detect optical radiation with vacuum wavelength 0.8 μm and incident powers in the range 10 μW to 1 m W. The photodiode has a 70% quantum efficiency and a dark reverse saturation current of 1 nA.
Calculate the value of the load resistance needed to ensure shot noise limited detection at room temperature. Why cannot linear operation be achieved if the photo detector is directly connected to this load? Explain how a transimpedance amplifier may be used to overcome this problem.
What is the conclusion that can be made for linear,square-shapedcells and frequency reuse factors C=3 and C=4 interms of theirSIR(Signal-interference ratio).
a television station is considering the sale of promotional dvds.nbspnbspit can have the dvds produced by one of two
Using a computer program in excel plot the electron concentration of silicon doped with 1×1013 cm-3 phosphorus as a function of temperature. Use a temperature range from 300K to 800K. Assume that Nc, Nv, and Eg are temperature-independent
a certain ideal voltage generator is characterized as v(t) = 40 sin 377 t . If this generator is measured with a DC voltmeter, the instrument reads 12 volts, what is the rms value of this voltage waveform
Waves and Strings: compute the tension in the top string (i.e. E string, lowest note) of a properly tuned guitar. You will likely need to spend a couple minutes on the internet to obtain length and any other important properties of the string.
A tank of fluid employed in a chemical process is being monitoredwith three sensors. The sensors measure temperature, pressure andfluid level. If all the sensor measurements are in the normalrange, the sensor outputs are low.
Design a band pass filter using capacitive-gap coupled resonators.
Create a block diagram of the electronics of the proposed vehicle. Include enough detail on each components and number of wires between each subsystem.
The wave function of a certain standing wave on a string fixed at both ends is y(x,t) = 0.30 sin(0.0025x)cos(300t) where y and x are in centimetres and t is in seconds. If the string is vibrating in its fifth harmonic, how long is it
If LiC1.2H2O(s) and H20(1) are mixed isothermally at 298.15 K (25°C) to form a solution containing 10 mol of water for each mole of LiC1, what is the heat effect per mole of solution?
a bar of n-type germanium and we place an E field going to the right across it and create a pulse of excess minority carriers (holes) in the center of the bar at time t=0. In other words we are performing the Haynes Shockley Experiment on the bar
It is required to design the DC motor dedicated to carry two wagons underground railway train. Each wagon is supposed to carry a maximum of 20 persons. The power utility is supplying the railway by 700 V DC source capable to deliver enough curren..
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