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A microphone of 300Ω impedance has an output at -60 dB below a 1 mW reference level. The microphone provides input to an amplifier which in turn is to provide an output level of 30 dBm when a load of 8 Ω is connected to the output terminals of the amplifier. Find
(a) The output voltage of the microphone
a voltage is given by v(t)=10sin(1000(pi)(t) + 30 degrees)V 1. use a cosine function to express v(t) in terms of t and the constant pi. find the frequency in hertz to two significant figures and appropriate units.
The resulting oscillation is detected by a nearby ship monitoring a radio beacon signal at 290.5 kHz (1.825 Mrad/s). What is the resistance of the damp rag?
When the transformer is switched on (energized), the crest of the inrush current of the transformer can be modeled by an equivalent inductive reactance of 7Ω. Estimate the voltage flicker at the transformer side.
Spectrum Analyzer, A spectrum analyzer is connected to an unknown signal. The spectrum analyzer displays the power level of signals in dBm vertically and frequency horizontally. The spectrum of the unknown signal creates the following display:
Using D-type flip-flops, design a synchronous Moore finite-state machine that monitors two inputs A and B, and asserts a scalar output if the number of 1s observed on the inputs is a multiple of 4.
Design and test a 4-bit ripple carry adder, i. e., an array of 4 full adders, that adds any 4-bit binary number A3A2A1A0 to the 8-4-2-1 BCD code of the third and fourth non-zero and different digits of your Red ID number.
A Silicon wafer has a uniform doping density of 8 xl018 atoms cm-3 of Arsenic and 2.5 x 1019 atoms cm-3 of Phosphorus. Assume that all Arsenic atoms are fully (100%) ionized at room temperature but the Phosphorus atoms are 80% ionized.
i) Calculate the number of calls/hour/cell and the number of calls/hours/km2 ii) Calculate the number of users/hour/cell and the number of users/hours/channel iii) Find the modulation frequency for this system.
A nnpn transistor has an emitter area of 10mm x10mm. The dopingconcentrations are as follows: in the emitterNd=1019 cm3, in the baseNa=1017 cm3, and the collectorNd=1015 cm3. The transistoris operating at T=300K.
this project is about building a coded lock system using atmega8 by using assembler language. lcd should show your
Half and Full Wave rectifying and Fourier Rectifying a sinusoidal provides a way to create a dc source. In this problem we consider the Fourier series of the full wave and half wave rectified signals. The full wave rectified signal xf(t) has a per..
Water at the top of Niagara Falls has a temperature of 14.0°C. If it falls a distance of 60.0 m and all of its potential energy goes into heating the water, calculate the increase in temperature of the water at the bottom of the falls.
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