A follow up question - does it matter when I equate the denominator to 0 to get the poles. For example, if I replaced the blue box with R_\rho C_\rho +1/s, there would a 1/s term at the top, yet the bottom would be unchanged. If I just left the 1/s term on top and equated the bottom to zero at...
I have tried two attempts at this and the strange this is - depending on where and how I apply my algebraic simplification (multiplying by s/s), I get a different answer. In attempt 1, I lose the integrator s=0 pole some how but in attempt 2, it's all fine.
Attempt 1
Attempt 2
PS: I have...
Why do you need an ESR for the capacitor to create a voltage ripple? Just the capacitor on its own receiving the AC component of the inductor current will charge it up, thereby creating a voltage ripple.
I think I am getting confused between voltage ripple and current ripple.
The LC filter will severely attenuate voltage ripple at the switching frequency and the harmonics, for any bit of voltage ripple left over, we use the small-ripple approximation and say it is zero.
However, the current...
I am reading a book 'Fundamentals of Power Electronics' - Erickson. The book begins with a buck converter and the assumptions that we use so that we do not have to deal with 2nd order equations. I will first explain what the book says
What the book says?
The book says that the LC filter of a...
Homework Statement:: This isn't a homework question but just a theoretical questions.
[mentor’s note: moved to a more appropriate forum for theoretical questions.]
I know that current is defined as the rate of change of charge per unit time.
i = dq/dt
This makes sense for a capacitor which...
I would like to ask about the behavior of a MOSFET as a capacitor, particularly at the onset of inversion/weak inversion - see Fig 2.6(c)
At this stage in Fig 2.6(c), there is positive charge at the gate metal/poly contact, then an insulator oxide and then negative ions (positive holes have...
Homework Statement:: Hi,
It's been a while since I have reviewed my basic semiconductor physics and I have some doubts.
In a P-Type doped semidoncutor material, I understand that Group III elements such as Boron are added to a Group IV element such as Silicon and thus the Boron atom has one...
Thanks very much. One last thing, the voltage on Vref should always decrease right? Even in the case where we switch capacitor C1 from Vref to GND (rather than C2 from GND to Vref) and leave everything else the same.
First, I calculate the jitter power with an equation given in the book
Next, I calculate the signal power
Now, I know that SNR = Psignal/(Pjitter + PthermalNoise),
However, I seem to be getting a negative value for the thermal noise power?? My plan was to use this thermal noise power and...