If somebody can please help me with this multi-part question and show me how to
ID: 1811538 • Letter: I
Question
If somebody can please help me with this multi-part question and show me how to do it, I'd appreciate it greatly.
A)
(i)Figure: http://i42.tinypic.com/2dsh2zm.jpg
For the phase-shift oscillator of the following figure, how do I find the value of Rf needed for oscillation and the frequency (fo) of oscillation?
Rf=_________(k ohms)
Fo=__________(HZ)
B)
(i) Figure: http://i41.tinypic.com/50o2ug.jpg
For the Wien bridge oscillator for the following figure, how do I find the value of Rf needed for osciallation and the frequency (fo) of osciallation?
Rf=________(k ohms)
Fo=_________(Hz)
C) If stabilization of any of the osciallators from questions A or B is to be done by automatically adjusting resistance Ri, we have that as the output osciallation strength tends to increase, the non-inverting amplifier gain (for Question B) or the inverting amplifier gain (for question A) will automatically____________(increased/decreased), and thus, Ri will be automatically _________(increased/decreased) in value.
D)
Figure: http://i42.tinypic.com/x4gos4.jpg
(i) For the following figure, determine the slopes of the curve in different regions.
a)Slope in region 0ms<t<1ms is _________(V/s)
b) Slope in region 1ms<t<2ms is _________(V/s)
c) Slope in region 3ms<t<4ms is _________(V/s)
(ii) What is the differential equaation that relates output Vo(t) to input Vi(t) for an OP-Amp differentiator using the gain constant of K= 3x10^-3(s)
V0(t)=__________
(iii) The waveform of the figure is fed into an OP-amp differentitiator with a gain constant of K = 3x10^-3(s). Which sketch of the waveform output of the differentiator is the correct one?
Figure: Figure: http://i42.tinypic.com/x4gos4.jpg
choices: http://i39.tinypic.com/35hha1i.jpg
Explanation / Answer
A) sorry the aobove solutio is wrong
it is a RC Phase shift ocillator
F= 1/(2*pi*R*C*Sqrt(6))
= 1/(2*pi*10k*0.02micro*Sqrt(6))
= 333 Hz
Rfb = 29R
there fore Rfb= 29*10k = 0.29 M ohm
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.