Recent content by paulmdrdo

Summary:: Differential amplifier common mode gain derivation of forumlas I'm having a hard time deriving for equations 10-8 -10-9. I tried adding equation's 18-6 and 18-7 but cannot proceed with the derivation. I need help on this. Thank you!

How can Vce vary from 0 to 2Vcc? In class, I learned that it was due to Lenz Law working in the transformer and a voltage of Vcc being induced to reverse the change in Ic. However, I cannot picture this. Can someone please explain with a diagram of how this comes about in the transformer windings.

What is the proper way of doing it then? Isn't the difference f(x)-g(x) supposed to be delayed by 90 deg when it passes the loop?

By KVL.

Yes. It is not zero. That is why I have the expression of the voltage at that node.

ICIS stands for Current(I)Controlled Current(I) Source. What's wrong with the equation of IL?

I did not include Iin because I learned that when you are finding the output impedance of an amplifier all sources must be set to zero. Short circuit for voltage sources and open circuit for current sources. That is Why I2 is zero. Have I misunderstood something? Here are the steps I was taught...

I assumed that the input impedance Rin of the opamp is so large. I2 is very small to have an effect.

Summary:: I was trying to derive the equation for the output impedance of the ICIS circuit. Here's what I've tried so far. What I have derived does not agree with the one provided in my book. Since it is a current source the negative feedback must increase the output impedance. The one I...

I tried solving this problem and got it correctly until the part A of the question. My solution is the same as the one given in the solutions manual until the part I put in the red box. I don't understand what is the logic behind the calculation of the bandwidth and center frequency there...

Hello, "then every cycle it will enhance the cycle" what cylce are you referring to in this statement? " creating larger and larger swings in voltage and current" in RLC parallel configuration you apply the voltage source in parallel to the components how can the swing in voltage be larger? Is...

I watched it already but still find it difficult to understand as to why these phenomenon occurs. For example in parallel RLC when driven at resonance the total impedance is just R which is the maximum then current drawn from supply will be minimum and by ohm's law it is just Vs/R. The...

Hello! I'm still confused. I don't quite get this part "On the next half cycle the driving voltage is the opposite polarity of the capacitor. That makes two voltage sources in series". I thought we're taking about parallel RLC, why the series voltage soruces occurs? and what about the...