# Questions tagged [transfer-function]

Anything related to transfer functions, i.e. those complex-valued functions of a complex variable used to model mathematically the I/O relationship of linear time-invariant initially-at-rest system using Laplace transform.

616 questions
Filter by
Sorted by
Tagged with
52 views

### How do I find the fourth order transfer function from this step response diagram?

I have the following diagram of a system's step response: I'm having trouble understanding how to calculate the system's transfer function for fourth order. hir: How do I find the second order ...
81 views

### Zeroes of transfer function

In 'Franklin F kuo's book it is written that "The zeroes of transmission of the ladder occur at the poles of The series branch impendences or at the zeroes of shunt branch impendences" here ...
50 views

43 views

### How can you calculate the transfer function of any parallel circuits?

I have now seen a few cases where RC in parallel are used as a Filter or just the famous LC filter. But I am asking my self. How do you calculate the transfer function? Now Kirchhoffs voltage law ...
48 views

### How to find transfer function and system response?

what is the transfer function of the system? what is the impulse response of the system? what is the system's 3dB bandwidth?
103 views

### Zeros and poles in the following bode plot

According to the definition, zeros are the frequencies which make transfer function to be zero, and poles are the frequencies which make transfer function to be infinity. The definition can be seen ...
44 views

### Linear dropout voltage transfer function

I am reading this application note from Texas instrument : http://www.ti.com/lit/an/slyt187/slyt187.pdf?ts=1591543592096&ref_url=https://www.google.fr/. The application note give us the transfer ...
42 views

### Bode plot display in matlab

I would like to display a bode plot of a buck-boost converter using Matlab, so I got the figure shown below, If we look closer to the phase plot, we see that it starts from 360°. My wish is to make ...
74 views

### Second order differential equation implementation using OP-Amp

I am trying to implementat the following equation \begin{equation} x''+4x'+25=\sin(20t+36) \end{equation} using OP-Amp's. I tried to use state-space technique to implement it in the below circuit x ...
42 views

### Modulator gain in DCM mode of Buck converter

I am referring this document in Fig 19 the modulator gain is calculated by the formula that results i.e 112.73 with Duty cycle in DCM as ...
40 views

### Characterising an Audio Isolation Transformer

Rummaging around the junkbox in an effort to find a 600:600 ohm audio isolation transformer, I found a possible candidate rescued from a store closure some time back. It's basically a cheap, low ...
68 views

### Why do I need phase margin if I know the transfer function?

What is the point of examining the phase margin (or gain margin) for a closed-loop system if I can just solve for the transfer function. The transfer function will give any poles and zeros, which can ...
57 views

### Determine transfer function from circuit with different currents

Just started on the topic Circuit Analysis, and am supposed to find the transfer function of the following circuit: So I know I am supposed to use KVL to solve this problem. I can first transform ...
104 views

### How do i go about finding the transfer function of this system with two inputs?

This was how i tried to formulate the answer but ive been told its incorrect. $$R(t)=u(t)$$ $$D(t)=u(t)=1/s$$ $$K=10$$ $$H=1$$ $$G=\frac{K}{s(s+1)(s+2)} =\frac{K}{s^3+3s^2+2s}$$ If someone could ...
59 views

### Transfer function of a second order capacitive accelerometer

In order to find the transfer function of the accelerometer MMA7361L based on the information given in the data sheet 1 I first made a hypothesis that it a second order sensor since it has a ...
31 views

### Centroid from calculated root locus is different to the one from MATLAB

Hi all hope someone can help me here. My problem involves the transfer function G(s)=(s+32.8)/((s+2.8)(s+5)(s+27.8) ) As far as im concerned the centroid is ...
67 views

28 views

### Determining Z1 for voltage divider of RF Matching Circuit

I have a problem where I was given an RF circuit with a series RL load. I am tasked in finding a matching L circuit and determining the values of the components. I used a smith chart to determine that ...
54 views

### How to find the phase of this transfer function?

I have been trying to find the phase of this transfer function: G(jω)H(jω)=0.1695/jω(5.88jω+1) by doing this: Phase = -arctan(0/0.1695)-arctan(w/-5.88*w^2) PHASE = 0-arctan(1/-5.88*w) Is this ...
190 views

### Finding impulse response by a non-Laplace-transform method

The input function is $$x(t)=e^{-t}u(t)$$ and the corresponding output function of a linear system is $$y(t)=10e^{-t}\cos(4t)u(t)$$ where $u(t)$ is unit step function. I understand how to find the ...
33 views

### Line Impedance Stabilization Network (LISN) ripple to measurement transfer function

While reading about LISNs, I was lost a bit. The CISPR limits are in dBμV, so they're voltages. But are these an image of the current following IN the DUT? Below you're see the LISN transfer ...