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Questions tagged [graph]

The tag has no usage guidance.

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1answer
87 views

Direction of current flow in resistor networks

We have a simple resistor network \$g\$ with \$5\$ nodes and \$6\$ edges (resistors) as given below: We assume all resistors have the same resistance (say \$1\$ Ohm, so homogeneously distributed ...
0
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1answer
36 views

Find admittance( G ) matrix of a resistive circuit

I am taking Signals And Systems class where I have to calculate the admittance parameter of a given circuit. A given circuit for example: This is tedious and calculating the parameters takes so long....
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0answers
49 views

Zener diode equation proof (chacteristic curve)

I'm trying to prove this equation(at least I think that's the correct one): which produces this graph: I can prove the one that describes the PN diode but I am not sure what I should do differenly ...
0
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2answers
103 views

Thevenins theorem + two diodes and a resistor using graphical solution

I've got a homework to solve this circuit by a thevenin's theorem and get a current and tension of the diodes using graph. I've looked all around the Internet and couldn't find one single video that ...
1
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1answer
61 views

PSPICE graphs work separately for subcircuits, wrong when combined?

I'm working on a pulse generation circuit that will be used to drive an ultrasonic transducer. The following circuit is giving an unexpected output. It might look complicated, but really it can be ...
0
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1answer
38 views

i-v graph, how to find current and its behavior

I have this circuit and I am trying to make a i-v characteristic chart. I see that it has 2A as displayed, so would I split it between the 4 ohm resistor and the left side element? In addition, I am ...
0
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1answer
109 views

iv characteristic graph confusion

I am trying to understand how a iv graph for a battery rated at 10V with internal resistance of 10 Ohms would look like. I was thinking it would just be a constant 10V for the graph, however, I am ...
0
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2answers
47 views

Graphical method for obtaining waveshape of current

I was doing exercises of the book Electrical Engineering Fundamentals by Vincent Del Toro. Then I saw this question. The voltage waveform shown in fig is applied separately to a pure capacitor of 1 F ...
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1answer
51 views

Edge betweenness centralities for distribution grids [closed]

Graph centralities like edge betweenness centralities are commonly used to study the vulnerability in transmission networks, can they equally be used to study radial distribution networks ?
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1answer
40 views

What is the exact value of voltage at T in square wave form?

at t=0s v=1V; T=5ms v=1,0,-1? which one? looking at graph.
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1answer
60 views

How to change FFT spike to curve

The first picture is a part of my circuit and the voltage pass through the high filter circuit. The second picture shows an FFT spike which is obtained from the .csv file created by oscilloscope. I ...
0
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1answer
399 views

LTSpice y-axis swap

When plotting values of 2 different types (in my case voltage vs time and current vs time), is it possible to swap the y axes to the opposite side? At the moment my circuit plot shows voltage on the ...
0
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1answer
83 views

Relative responisivity of the VEML6040

I'm currently working a project involving the VEML6040 color sensor (Link to application note). I am reading through the application note and stumbled on the graph depicted below. As far as i ...
0
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0answers
20 views

Is there anything called “non-fundamental” cut set matrix?

I'm a bit confused about cut-set matrices. For writing a cut set matrix for a circuit do we only consider fundamental cuts? Or would that make it a "fundamental"-cut set? Is there anything called a "...
0
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0answers
544 views

How to plot an impedance vs frequency graph in Proteus?

I'm designing a circuit that simulates the impedance behavior of a real world speaker, which is not purely resistive and looks something like this: I already got the basic circuit but need to tweak ...
0
votes
1answer
1k views

Calculating the period, frequency, and confirming multimeter readings

I have some readings from an Oscilloscope that I want to take info from and calculate the period, frequency, and then confirm some multimeter readings I took. For the 1st: The function generator had ...
4
votes
1answer
169 views

Why the current in this graph is so strange?

I have a question about a 3-phase 400V motor used by an hydraulic pump. I read its currents and their graph is quite strange to me, far from the usual (deformed) wave. What could be going on here?
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1answer
60 views

Rectangular signal

Can someone explain me how do I take the first derivative of the given function and how will this function look like ?
0
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2answers
113 views

Confusion regarding diode rectification circuit graph

I have this question: This is how I went about answering this question: In the above question, it's telling us to presume the ideal diode model. Therefore the D4 (diode 4) is in forward bias when ...
0
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1answer
434 views

Transfer characteristic of circuit

I'm trying to find out the transfer curve (Vin Vs Vout) of the circuit given below. I approached this way: Is it the right curve?
0
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2answers
414 views

Zener diode characteristic graph

I'm having problem in understanding characteristic of zener diode. In the circuit zener voltage is 5.1V and source voltage is 10V. When i simulated in a circuit simulator i got the voltage vs time ...
1
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3answers
200 views

Resistance of a fully conected graph?

How would one approach to solving for the resistance between any two nodes of a fully connected graph with an arbitrary number of nodes n and arbitrary resistance between them ? (resistors omitted ...
0
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1answer
64 views

Understanding equilibrium equations

I initially asked this question on math.stackexchange.com, but nobody answer so I thought I could try to ask here, this at least to some degree related to electrical engineering. Please help me to ...
1
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3answers
83 views

Strange output of Temperature probes

I've got 8 ds18b20 (knock-off I assume) temperature probes monitoring the temperature in a freezer. I'm outputting the value of those probes each minute to an RRDTool graph using a Raspberry Pi. ...
1
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4answers
137 views

Phase between two sinusoids and which one is leading

that's my first question here. I'm studying fundamentals of electric ciruits and I faced this question: Determine which one leads and by how much: $$v1(t) = 4*\cos(377t + 10)$$ $$v2(t) = -20*\cos (...
0
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1answer
101 views

How to deal with the ground node in circuit graph and the gains of dependent sources?

in this circuit I am asked to find the gains of both dependent current and voltage sources. I've drawn the circuit graph and done the analysis that I had supposed. But I am not sure about whether ...
0
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2answers
879 views

debounce state machine graph

I need to make the graph for a state machine that debounces an input signal, maintaining the current up/low input signal for a certain time, and to calculate this time im using a counter. I am having ...
0
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1answer
182 views

Understanding data-flows graph

I've been trying to improve my understanding of optimization of digital circuit. With such goal in mind I've been studying from this book. I've been trying to understand mathematically the meanings of ...
0
votes
1answer
489 views

Current flow through inductor (large inductance) in AC circuit

I fail to understand why does the current flow in one direction only initially at t=0 in an AC circuit.. also when inductance is increased the time take for the current to stabilize and move in equal ...
0
votes
1answer
69 views

Sampling error in Lpc1769's Adc

I am trying to sample sin wave using Lpc1769's Adc. I am sampling signal using adc and send this data to pc using serial port (115200 baud rate). My sampling frequency is 1.5 kHz. When I sample 100 Hz ...
0
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1answer
162 views

Finding CutSet Matrix from a Circuit

I have the following question My answers are Please let me know if my approach and answer is correct to find the Cut Set Matrix.
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1answer
55 views

Diode Circuits Help

1) Assuming the input is expressed as Vin = V0 cos ωt, plot the output of each circuit in the figure below as a function of time. Use an ideal diode model. In the following problems, assume VB=2 V ...
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1answer
93 views

Determining the mathematical relationship in log graph please?

so lets say i have a log graph where the Y axis is measured in dB , while the X axis in Frequency. Y axis = from 0 to 90 dB X axis = from 0 to million Hz If 55 dB has 15KHz. Q1) How can i know ...
0
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2answers
63 views

Determining the inital phase of a waveform

How could I determine the initial phase of the following sinusoids with these parameters only ? from what I can see , I know that B is leading C since the crest is behind the Y axis .. Therefore , B ...
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votes
1answer
114 views

How can i measure the slope of the tangent in this graphic scale ? [closed]

Hello i am having a difficulty in dealing with this scale , i need to measure the slope of (slope1) by the simple equation y/x .. could you do that one only for me thanks
1
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2answers
127 views

Circuit to indicate 1 to 10 based on pressed switch

I am looking for a circuit which can turn ON/OFF 10 LEDs based on the switch pressed (push to ON, release to OFF). It is like an LED graph. My requirement is: ...
1
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0answers
441 views

How do I draw M-PAM curves of Channel Capacity Vs SNR?

I've seen the following figure in several different articles: (this one was taken from here) I understand that channel capacity of the Gaussian signal is ...
1
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1answer
124 views

V-I curve for Stepper Motor

I am new to stepper and want to know how velocity-current graphs are plotted for stepper motor. Is the speed graph plotted against the overall current drawn by the motor or it's single winding current?...
0
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2answers
2k views

BJT Ic vs VBE graph in Proteus simulation

I'm trying to simulate the behavior of a BJT on Proteus. The image below shows the graph that I got when I plotted \$I_c\$ on the vertical axis vs. \$V_{BE}\$ on the horizontal axis. But according ...
3
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3answers
52k views

Plot a 50Hz Sine Wave in Excel [closed]

I am trying to show a visual representation of a few cycles of a 50Hz and 60Hz sine wave at 400 Volts overlapping and trying to find out how to create this as a chart in Excel. Does anyone know how ...
0
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2answers
2k views

how to express y(t) as function of x(t) from a given two signal?

is there a simple way to answer ? I couldn't do it by finding the equation of the two signal and then proceed like any problem in math
0
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1answer
830 views

How to use a graph of a wavefunction (psi) to create an approximate graph for potential (U)?

I don't understand how the top graph was used to approximate the bottom graph, could someone please explain to me what was going on? I know that in regions 1, 3, 5, 7, there is no oscillation and ...
4
votes
3answers
15k views

What do ripples in frequency response curve of filters depict?

I am trying to understand the frequency response curve of various types of filters (Butterworth, Chebyshev etc). The curves are shown here for reference : One thing I do not understand is what do ...
4
votes
2answers
509 views

Drawing One-sided Magnitude Spectrum of Transmitted Signal in dBW

Question The voltage waveform measured at the 50ohm antenna terminal of a 11750-kHz AM (DSB-LC) short-wave broadcasting transmitter is shown in Fig. Q3. How to draw the one-sided magnitude spectrum ...
0
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1answer
3k views

PSpice Op-Amp Sawtooth Wave

I've got this homework about PSPice and op-amp. I need to make this triangular waveform and sawtooth(?) waveform of non-inverting op-amp circuit. I know the triangle one is 500us like the picture. ...
1
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0answers
50 views

Graph of the output Vo for a given Vi in a diode circuit explanation [duplicate]

We have the following diode circuit: We have found when the diode is on and off. I perfectly understand this. Now the teacher gave an extra question that I don't understand. What is the output Vo (...
1
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2answers
1k views

Can I make pulsing light using AC as source, a diode and a LED?

I'm new to this branch of physics hence my stupid question. I know that diodes are used to make current flow in only one way. If I connected an AC source to a diode and the diode to a small light ...
2
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1answer
1k views

Operational amplifier circuit with one ac and one dc voltage source

The following circuit contains ideal operational amplifier, Vs voltage is sinusoidal with amplitude of 1Volt and frequency of 1kHz, where VE is a dc voltage of 2Volts. I am trying to use ...
12
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4answers
2k views

How to read Scaled Graphs?

Please ignore the graphed lines, those are irrelevant to the question, it's the graph itself that's relevant. I see this type of graph used all the time, between ...
0
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1answer
60 views

Having issues with attempting to draw the Bode Plot of a complex pole?

Here is the graph that I'm trying to achieve. \$H(s) = \frac{1}{s^2 + 2s + 100}\$ \$H(s) = \frac{1}{100(\frac{s^2}{100} + \frac{2s}{100} + 1 )}\$ \$\zeta = 1\$ and \$\omega = 100\$ which indicates ...