# Questions tagged [function]

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### Dynamic call for Variadic functions (Arduino) [closed]

How can we make this code work for Arduino? Thank in advance. ...
1k views

### Function generator in the nano or micro volt range

I'm looking to get a hold of a wave function generator that can produce signal in the micro or nano volt peak to peak range. The lowest I've been able to find is in the millivolt range. Do these ...
43 views

### ac/dc coupling and DC offset to read DC voltage in analog oscilloscope

A function generator is connected to an analog oscilloscope. I can see a sine wave. Can I read DC voltage with the help of DC offset knob? If so, can the minimum DC voltage be negative?
102 views

### Transfer function of electrical circuit

I have a question about this circuit. How do i get transfer function of a circuit with a diode? The current through diode is Id = e^(Ud/5) -1
54 views

### transfer function discrete

If f[n] is the input and g[n] is the output, how can I determine the transfer function of the diagram?
37 views

### Gain & Phase of a transfer function

can anyone help me calculate the gain and phase angle of the following transfer function for a low pass filter at a frequency of 130 rad s^-1: G=1/(1+jw/260)
73 views

### What's the phase relation between the sine wave and the sync output from a function generator?

I'm using a function generator to generate a sine wave, and am trying to use the sync (TTL) output to flash an LED at the beginning of each wave pulse. However, when I compare the sin wave and the ...
146 views

### Understanding function generator output when units are in dBm

I am using a function generator with output in units of dBm. It has an output impedance of 50 ohms. I am measuring this output on an oscilloscope, and am failing to understand the waveform's amplitude....
88 views

### Flat line on output of single supply sawtooth generator

I have built the following sawtooth generator using LM358 opamps: In simulation everything works fine, however in reality I get only flat line on output. Anyone got any idea what's going on?
74 views

### How would you go about getting the small signal transfer function for this inverting circuit?

I am trying to get the small signal transfer function for a circuit that looks like this: It is an inverting amplifier connected to an output branch and a branch with a capacitor in series with an ...
81 views

### How to validate that a function is executing from RAM?

I'm trying to execute a control function as quickly as possible from SRAM on an STM32F3xx using GCC (System Workbench toolchain). ...
73 views

### There is no math for adding the functions of two parallel filters. Or is it?

I want to add two "parallel" functions. Each of them describes the frequency response of that individual filter. Put in other words, I want to see what the frequency response looks like when the two ...
67 views

### Graphical nature of signal energy

In signals, we learn that the energy of a signal is the integral of its square. E.g. $E=\int_{-\infty}^\infty x^2(t) dt$ We know that integrals are the areas under the function in a graph. But ...
430 views

### Constructing bode plot from experimental data and constructing a transfer function

I've been trying for a few days to convert an experimentally obtained (frequency against magnitude and frequency against phase) graphs to a bode plot and then construct a transfer function from the ...
59 views

### Frequency response simple question

I'm looking at answers to calculating the frequency response, but i don't understand one line. what are they doing to go from the first line to the second line?
422 views

### Obtain a Transfer Function from Bode Plot shown

I want to obtain a Transfer Function from the Bode Plots I already got the corner frequencies (approximates) and all the terms for my T.F. Then when I try to check my results in MATLAB my plot drops ...
52 views

### total transfer function of a LTI System with feedback

I have calculated the transfer function of such systems many times, but now i feel like I`m going around in circles. I have drawn a few help-signals to help me solve it, but they are dependent of one ...
51 views

### How to choose which function to use depending on the parameter value? (MUX and Gates implementation)

Let's say we have A,B,C , which are all representation of decimal numbers. A and C are 4bit, B is 2bit. if A is any of those numbers (eg: 0,5,6,11 ), the function is F(A,B,C) = AB+C If A is the ...
65 views

### Code parts encapsulation method

I have a prototype of a simple monostable multivibrator components like this: ...
2k views

### Implementing a function using decoder, encoder and some gates

Implement the function F(A,B,C,D,E) = A’B’C’DE’+ABCD’E using only the components required from the ones given below: One 3:8 decoder with active high outputs and an active high enable input One 8:3 ...
898 views

### LTSpice: how do I pass to a function a component name as parameter?

Good morning all. I am implementing a subcircuit in LTspice, and I want also to modify the plot.defs to calculate some quantities with the voltages/currents inside the subcircuit. Thus, I will have a ...
158 views

### Power amp for function generator

I have designed a function generator with the XR2206. That works well. I can take it up to 2MHz (sacrificing on THD, however). Where I have failed so far, is the power stage. I have a supply of +...
94 views

### Special Function Registers value expressed as Hexadecimal & Bit shift

I was wondering if someone could help me solve one problem, because I am very new to this and I was given the code of a former programmer to work with. I'm trying to figure out the value of 0x8008 &...
79 views

### How do I integrate a function and plot the result on Matlab?

I need to plot a function that has an integrate inside, but I don't know how to do this on Matlab. Function: $SOC(t)= SOC(0) - \dfrac{1}{Q}\int_{0}^{t}i_2(t)dt$ time is in hours, current is in ...
227 views

### Bode plot of circuit with unknown values

I have the two following circuits with unknown values for R1, L and C, R2 is 1Kohm. I have attempted to find the transfer functions for these circuits and ultimately want to produce two bode plots ...
118 views

### Transfer Function of Op Amp Circuit

How can I obtain the transfer function graph of this circuit, assuming the zener diodes voltage are 4.3V and silicon diodes 0.7V.
508 views

### 4 to 16 decoder made by two 3 to 8 decoders not working properly

I have a function f(x,y,z,w)=x.y.z+ y’.z’+x’.w’ and I need to make a circuit using two 3 to 8 decoders, an inverter, an or gate with as many inputs as we want (I use two because I need a 9 input one ...
227 views

### Average of a periodic voltage

I know that this question is math related, but I still don't get why we can say the following formula holds: I've a voltage $V:\left[0,\infty\right]\to\mathbb{R}$ and $V$ is periodic with $T$....
167 views

### Implication of s -> infinity in a transfer function

For a strictly proper transfer function with no poles/zeros at infinity, I understand that it gives G(inf) = 0. What does it for a proper TF?
507 views

I'm trying to add the following function on my Simulink model. where C, B, and N are already variables in my file. Is the correct way to multiply omega by the gains 3N and N/2 an input that into the ...
282 views

### minimize hazard free function

Given a function, e.g. $y = f(x_0, x_1, x_2, x_3) = \sum m(0, 3, 4, 5, 6, 7, 8, 9, 11, 15)$. How can i find the minimized function without hazards? I see this can be minimized using a Karnaugh map: ...
1k views

### Transfer function of three cascaded RC filters?

I am looking for the transfer function of three cascaded RC filters: I have found the solution for two RC cascades (components differently labeled): I need an analytical expression like this one for ...
77 views

### Unable to access structure members through pointer in function called form another funciton?

While trying to interface BMP180 to my STM32L4 Controller using libraries I found that the , BMP180_RETURN_FUNCTION_TYPE bmp180_get_calib_param(void) funciton ...
130 views

### What are the available solutions for a 8-input OR function that is 74xx compatible?

I need to implement an 8-input OR function that is compatible to IC chips of the 7400 series. I already found a few solutions, but none of them is perfect. A perfect solution would be an OR-gate chip ...
197 views

### 2nd Order transfer function to difference equations

I'm wondering if someone could check to see if my conversion of a standard second order transfer function to a difference equation is correct, and maybe also help with doing a computer implementation. ...