Q1. From the UJT data sheet: +20V n = 0.63, Vs = 2.5V, Ip = 7.4µA, Is = 1.75mA, RBB = 5kN & V, gmin = 0.35V. R1 R2 Calculate the frequency range, the range of R1, and determine the value of R2 and R3. 10k2

Q: Vm(t)=Vmsin(2pi*1000t) and an unmodulated carrier Vc(t)=15sin(2pi*500t),determine number of set of…

A: GIVEN:                vm(t)=vmsin(2π1000t)vc(t)=15sin(2π500t) FIND: (a) number of set of sideband…

Q: 1. If the (volt/DIV) =5 and the input = (20v) plot and discus the result. %3D 2. If the (time /DIV)…

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Q: Q2: An angle-modulated signal with carrier frequency W. = 2n • 10° is described by equation FEM = 10…

A: Note:Here the question has multiple sub-part .we will answer first three parts.If you want the…

Q: . An FM transmitter is determined to have a transmitter sensitivity of 728.832Hz/V. Determine the…

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Q: For an FM modulator with a modulation index m = 1.5, a modulating signal vm(t) = Vm sin(2000nt), and…

A: Given  Modulation index=1.5 A modulating signal and carrier signal is also given. We need to…

Q: 2. A BJT is biased at Ico = 0.84 mA and has parameters Cµ = %3D 1.2 pF, fr = 1 GHz and Bo = 105.…

A: We will use direct formula to calculate capacitor and frequency .

Q: 1. You are given an equation: 100 cos[(2 x 105 t) + 35 cos(100nt)]. From this expression, Determine…

A: We are authorized to answer three sub-parts at a time, since you have not mentioned which part you…

Q: An audio signal has an amplitude of 10V and frequency SKHZ, if the carrier frequency of FM signal is…

A: Frequency Modulation is one kind of Modulation technique in which information present in the audio…

Q: Q2. From the UJT data sheet: +50V From the UJT data sheet: 100 2 n = 0.7, Vs = 2V, Ip = 60µA, I̟ =…

A: The Unijunction Transistor (UJT) is a semiconductor switching device with two layers and three…

Q: Calculate the maximum frequency deviation for the FM signal v(t) = 10 cos (6000t+ 5sin2200t)

A: The expression of the FM signal is given as vt=10cos6000t+5sin2200t

Q: A baseband or modulating signal m(t) = 5 cos(2n x 15 x 10³t) angle modulates a carrier signal…

A: Given mt = 5 cos2π×15×103tct = A coswctkf = kp=15 kHz/v

Q: Q3: A carrier wave of frequency 2.5 GHz amplitude is modulated with two modulating frequencies equal…

A: From the question the carrier frequency Fc=2.5 GHz                                  Modulating…

Q: 4. A 1" order system has a time constant of 100ms. If the input signal diagram shown below, plot the…

A: A first order system has a time constant of 100 ms. If the input signal has the frequency diagram as…

Q: A Carrier of 450 W,1MHz is amplitude modulated by sinusoidal signal of 15 KHz to a depth of 50%.…

A: Given: In an Amplitude modulation PC=450 WAC=1 MHzfm=15 kHzμ=50%=0.5

Q: Q4) For a modulating signal: m(t) = 2cos100nt + 18cos2000nt 106. kf = a) Write the expression for…

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Q: What is the value of carrier frequency in the following equation for the FM signal? v(t)= 5…

A: The expression of the FM signal is given as vt=5cos6600t+12sin2500t. The value of the carrier…

Q: You want to transmits an information signal. You have been given the expression for the amplitude…

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Q: y(t) = 50sin(200t + q) ? (w = 2TTF ) 1. How many frequencies make up the signal 2. What is the…

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Q: For an FM modulator with modulation index m = 2, modulating signal Vm (t) = 5 sin (2000pit) and…

A: For an FM modulator with modulation index m = 2, modulating signal Vm(t) = 5 sin(2000πt) and…

Q: 2 kN 30 k2 3 µF V, AH 15 μF 10kn 1.46 kQ 6 µF

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Q: An FM signal has a maximum frequency deviation of 1500h and a modulating frequency of 500h, its…

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Q: 016: The bandwidth of the two angle modulated transmitting systems are compared, using the…

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Q: LeT FM signal be given as SFMCE) = 20Cos (2.11.l0 %3D and frequency sensiti Vity kf - lo and signal…

A: Given that (a) Although formula of transmission bandwidth of FM signal is given by  Hence,

Q: AM transmitter develops a power output of (110 W) across a (70 22) resistive load when a sinusoidal…

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Q: An acoustical engineer measures the quality of the resonance peaks for the pick- † up RLC circuits…

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Q: Q5) Do as required: 1) Draw the region Re()<1 2) Sketch the single sided spectrum of the tollowing…

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Q: For the attached circuit, specify the frequency of Y. * in o o oO0 10000. 20ms

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Q: A carrier (fc = 100MHZ, A. = 25V) is frequency modulated by the sine wave (fm = 8kHz, Am = 3V) using…

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Q: -0.5 A carrier (fc = 100MHZ, A. = 25V) is frequency modulated by the sine wave (fm = 8kHz, Am = 3V)…

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Q: Q5) Do as required: 1) Draw the region Re 2) Sketch the single sided spectrum of the tollowing…

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Q: Consider an FM modulated signal s (t) = 20 cos[276000f + 0(t)]. The frequency sensitivity %3D = 50…

A: We know there is direct formula for bandwidth and we also know how to find out modulated signal . We…

Q: Q3: A carrier wave of frequency 2.5 GHz amplitude is modulated with two modulating frequencies equal…

A: Modulating frequencies of the two signals are 1 kHz and 2 kHz.

Q: Determine carrier and modulating frequency of the below FM equation 10sin(5 x 10°t + 4sin1250t)

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Q: A rule of bandwidth for FM signal is used as BW = (2m, + 1)f. Find the fraction of the signal power…

A: The bandwidth of Frequency Modulated (FM) signal is given by, BW = 2mf+1fmCalculate for,1. mf=12.…

Q: SaR Suppose that the signals xfm], x[m] and x,[n] are given by and xfn] ='220 25 2mn 2mn ala) =…

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Q: 684. See Fig 684. C=13 uFd, L=17 Hen, R=102 Ohms, Vm=15 Volts, w=67.3673 rad/sec. Determine the…

A: Here, first circuit is given in time domain and second Circuit in jw domain.

Q: An FM signal has a maximum frequency deviation of 1500h and a modulating frequency of 500h, its…

A: According to the question, for the given FM signal The maximum frequency deviation △f=1500 Hz…

Q: Calculate sideband, carrier and total power for the given signal (AM). Ccos (21 (fet fm) t +cos…

A: AM signal   μac/2cos2πfc+fmt+cos2πfc-fmt  +accos 2πfct

Q: The signal x(t) is being used as a Modulating Signal to conduct two experiments to produce the FM…

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Q: Tuned Circuit Design Using a VARICAP   (a)  Refer to the capacitance curves for the Motorola…

A: Solution- The given operating frequency is 103.3MHz.

Q: Q3. An AM (DSB) signal is given by xc(t) = 20(1 + 0.5 cos(4000nt) + 0.5 cos(6000nt)) cos(20000nt).…

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Q: Calculate the bandwidth of an antenna having a cut off frequency of 110 MHz and a Q of 70

A: The bandwidth of an antenna is related to the cut-off frequency of the antenna according to the…

Q: An SSB transmitter produces a peak-to-peak voltage of 178V across a 75Ω antenna load. What is the…

A: Given: Peak-to-peak voltage Vp=178 V, Antenna load resistance RL=75Ω. RMS voltage…

Q: 11 0.9 0.8 0.7 与 0.6 0.5 0.4 0.3 0.2 0.1 10 /11 12 0.1 0.2 0.3 0.4 0.5 A carrier (fc = 100MHZ, A̟ =…

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Q: RC RB C2 Vout C1 Vcc 12V Q1 Rs RL Vin SINE(OV 10mV 1KHZ) RE ECE

A: First we will do DC analysis to find out small signal parameters then we will do small signal…

Q: 2. A DSB-SC AM signal is modulated by the signal m (t) = 2cos2000nt + cos6000nt. The modulated…

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Q: Q3: The equation of an angle modulated voltage Ø(t) = 10cos(10%t + 3 sin 104 t) (a)What form of…

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Q: Question 3 (a) Briefly explain THREE (3) disadvantages of Single Sideband (SSB) over Double Sideband…

A: As per our guidelines we are supposed to answer only first 3 subparts. Kindly repost the other parts…

Photoconductive Cell

Photoconductive cells are light-sensitive resistors in which resistance is inversely proportionated to light intensity when illuminated. These devices consist of a thin single-crystal or polycrystalline film of composite semiconductor materials. Cadmium sulfide (CdS) is used to make the most commercially available photoconductive particles which are sensitive to light in the visible spectrum. Other less commonly used substances respond to infrared light, but not to the visible spectrum. Such substances are lead sulfide (PbS), lead selenide (PbSe), and lead telluride (PbTe), and so on.