Question

Discuss how a sinusoidal oscillator produces an output signal without an input signal.

Discuss the difference between the circuit construction of a monostable and astable multivibrator

PLEASE NO HAND WRITTING...

Answer #1

**Answer :-** Oscillators are used to generate
signal without any input signal.

Generally oscillators take input as internal noise signal or
sometimes DC signal is given internally.

Oscillators always have a positive feedback. Sinusoidal oscillators
can produce a sine waveform and frequency may be varying from 20 Hz
to 1 GHz.

Simple example is RC or LC oscillator in which charge on capacitor
works as input signal to start oscillation.

The circuit diagram for astable and monostable have been shown below-

6. Answer the
following questions:
a. What is the
difference between Op-Amp circuit and Comparator circuit?
b. Discuss some
of the issues with this Op-Amp oscillations and explain the voltage
swing and cause of potential failure of this circuit.
c. What
makes the comparator circuit oscillate and more ideal for the
applications?
d. Describe the
operation of the comparator oscillator circuit and explain the
difference in inverting and non-inverting waveforms of the
comparator
e. What is the
significance of using comparator circuit to achieve sinusoidal
oscillations?

1-Draw the schematics of a full-wave rectifier circuit
without smoothing capacitor. Sketch the input and
output voltage waveforms?
2- Draw the schematics of a full-wave rectifier circuit
with smoothing capacitor. Sketch the input and
output voltage waveforms?

State the main difference between bipolar and unipolar
sinusoidal PWM (in terms of voltage output) and list two advantages
of unipolar over bipolar modulation.

Problem 1
Consider the discrete-time LTI system characterized by the
following difference equation with input and initial conditions
specified:
y[n] - 2 y[n-1] – 3 y[n-2] =
x[n] , with y[0] = -1 and y[1] = 0,
x[n] = (-1/2)n u[n-2].
? Write a MATLAB program to simulate this difference
equation.
You may try the commands ‘filter’ or ‘filtic’ or
create a loop to compute the values recursively.
? Printout and plot the values of the input
signal, x[n] and...

Design, simulate, and implement a multistage discrete amplifier
using small-signal BJT transistors.
Amplifier Specifications:
– Midband voltage gain: Av = 100.
– Lower 3-dB frequency: fc = 100 Hz.
– Input Impedance: Zin ≥ 250 kΩ.
– Output Impedance: Zo ≤ 100 Ω.
– Power Supply: Vcc = 15 V.
– The load resistance is 1 kΩ
– Output capability with a 1–kHz sinusoidal test signal must be
at least 2 V peak without severe distortion (i.e. clipping).
– Transistor...

Q1: answer the following without explain anything please
Amplifiers only operate properly in the _____ region of the
bipolar transistor.
Linear
Non-linear
Saturation
Open collector
Noise from input signal device is by the operational amplifier
circuit and transferred to the output.
Attenuated
Amplified
Inverted
Fed back
it is possible for a load device to pull down an amplifier
signal and give the appearance of an a(n)_________ amplifier .
Operating
Balanced
Failed
Saturated
the effect on the feedback is a gain...

how does a monopolist’s quantity of input compare to the
quantity of output that maximizes total surplus? how does this
difference relate to the concept of deadweight loss? please explain
in detail

how is economic growth measured? Why is economic growth
important? Why could the difference between a 2.5 percent and a 3
percent annual growth rate be of great significance over several
decades? Give some example to support your answer. No hand writting
please.

Design a circuit that takes three bits, X2, X1, X0 as input and
produces one output, F. F is 0 if and only if 4<=X<=6 when X
= (X2, X1, X0) is read as an unsigned integer.
X2
X1
Xo
F
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1...

When composing the models of two functions, how are the
input/output units of the inside and outside functions related?
When working with products of models, how are the input/output
units of the models related? Explain, using examples, how the units
help interpret the meaning of the derivative in context.
Please, need the answer ASAP.

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