Clik here to view.
Disturbance error transfer function
I was trying to solve some examples from the book Feedback Control of Dynamic Systems by Franklin, Powell & Emami-Naemi. (Seventh Edition, Pages 195 & 204) about PID controllers. The problem is...
View ArticleClik here to view.
Determining the zeros and poles of a common emitter amplifier
I want to determine the transfer function of the base common emitter amplifier. I don't want to neglect the impedances of the capacitors in the calculations because I want to determine the zeros and...
View ArticleClik here to view.
How should I apply FACT technique on this circuit?
I am learning the fast analytical circuit technique. How could I calculate the pole in the circuit below? I also calculated in the "traditional" way.I was able to determine the zero and the static...
View ArticleClik here to view.
Obtain the overall Transfer Function of each of the following block diagrams...
Help me guys to answer this question!
View ArticleClik here to view.
Cascading op-amps
I am trying to figure out the gain of the following circuit:What I have done so far is looking at each amplifier independently:$$U_3=-R_9/R_8=-4$$$$U_4=R_{10}+R_{11}/R_{10}=3$$$$V_o=-R_9/R_8 \times...
View ArticleClik here to view.
RLC bandpass filter transfer function
I've been tasked with finding the transfer function of the RLC filter shown below. I converted to the S-domain and used the voltage divider rule to find the output, and came up with:$$H(s) =...
View ArticleClik here to view.
Frequency domain design of a PI controller for a first order system with...
Let's say I have following first order system with transport delay$$G(s) = \frac{4563}{s + 64.77}\cdot e^{-0.000455\cdot s}$$My goal is to design in the frequency domain a PI controller in the...
View ArticleClik here to view.
Control system transfer function
I tried to find the transfer function F(s) = C(s)/R(s) through block manipulation and through Mason's Formula but the results are not matching. Where is the mistake?
View ArticleClik here to view.
How can I calculate the transfer function of a low-pass Sallen–Key filter?
I was looking at the following circuit. AFAIK, this is a low-pass Sallen–Key filter, with a VCVS instead of the op-amp.I started to work out the transfer function, but somehow I got lost at a certain...
View ArticleClik here to view.
Deriving transfer function from Bode Diagram
From the Bode Diagram which is also a minimum phase system,I have tried to figure out the transfer function it could have been like this,$$ \begin{align*} L(s) = \dfrac{1}{s}\cdot\dfrac{2}{s +...
View ArticleClik here to view.
Assign Bode plots to Nyquist diagrams
How do I assign the following Bode plots to their corresponding Nyquist diagram?Can i tell the number of poles of the transfer function of the nyquist plot, by looking at w→infinity (from which of the...
View ArticleSecond-order Butterworth gain calculation at cut-off frequency
The Butterworth second-order low-pass filter has the following transfer function:$$\frac{\omega_c^2}{s^2+\sqrt2s\omega_c+\omega_c^2}$$We know that at \$s=\omega_c\$, the filter's attenuation is -3 dB,...
View ArticleClik here to view.
How to determine the transform function of certain bode plots?
The answer to this question above is C, yet I only know that the anti-resonance and resonance are located at 8 and 11 Hz respectively.Another example below to which the answer is B.I appreciate any...
View ArticleSecond-order Band-Pass Filter Gain Confusion
If I derive the equation for a bandpass filter (in this case, critically damped) from the RLC transfer function, I get a different result than I would get otherwise by combining the transfer functions...
View ArticleClik here to view.
Closed loop transfer function of two cascaded systems [closed]
I am trying to understand a problem for my research. I don't have access to teachers or professors and couldn't find the solution to the problem in the available textbook (just studying it out of...
View ArticleDerive S-Parameter Matrices for Interconnected Multi-Port Networks of...
Question(s)Is the math below correct?If not, then what should be changed?If you know of an authoritative reference for this derivation, then please post it in an answer, or in the...
View ArticleClik here to view.
Realize transfer function with Op-Amps
I have this transfer function:$$H(s) = 15 \cdot \frac{(1k)^2}{s^2+500 s+(1k)^2} \cdot \frac{s+40}{s+300}$$I separated it into two stages, diving the \$k=15\$ so that both transfer functions have...
View ArticleClik here to view.
If I have an operational amplifier with a finite open loop gain, can I...
I'm talking about this op-amp. In the solution it finds an expression for the transfer function using a virtual short circuit without considering the open loop gain \$ A_{vol} \$ at all. I wanted to...
View ArticleClik here to view.
How to find the transfer function of current H(w) = I_out(w)/I_in(w)?
How do you find the transfer function $$H(\omega)=\frac {I_\text{out}(\omega)}{I_\text{in}(\omega)}$$ of a circuit like the below?simulate this circuit– Schematic created using CircuitLabI understand...
View ArticleClik here to view.
Stability Criteria of Type 3 Digital PLL
I suppose we can derive the stability criteria based on poles of open-loop transfer function of F(z) in expression (4.11). However, the pole analysis does not help in deriving the stability criteria at...
View Article