# Questions tagged [graph]

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### What type of regression do researchers use when creating discharge curves?

Source: https://www.richtek.com/Design%20Support/Technical%20Document/AN024 What type of regression do researchers use to create discharge curves? Is it cubic, or quintic, or something else?
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### How can one voltage value have multiple SOC? (Jackery Blog Graph)

https://www.jackery.com/blogs/knowledge/lithium-ion-battery-voltage-chart This is a typical voltage discharge curve for a li-ion battery. I am wondering how one voltage value can translate to multiple ...
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### Why are my results different from their PSRR scheme?

Even though I followed every step given in the Analog devices website, the results were still different and I don't know why. Can anyone give me a solution? Here is my result: But their PSRR ...
75 views

I have a question about the appearance of two Radiated Emissions graphs. Specifically, I want to understand why the curve looks thicker from 100MHz to 1GHz in one of the graphs. I observed that the ...
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### Graph plot of sinusoidal current/voltage vs displacement of speaker membrane from its resting position

For a very long time I believed that the speaker membrane just moves according to the amplitude of a electrical signal fed to it. Like, If at any instant, the current/voltage is at c% (0 <= c <= ...
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### I don't have constant current in this circuit

I have problem with this circuit, which purpouse is to give constant circuit on R7 resistor. Why i can't get constant circuit? Is it problem with simulator?
70 views

### Rigorous Definition of Resistors in Parallel when Circuit is Defined as a Graph

Sometimes electric circuits -at least the ones consisting of voltage sources, resistors, inductors, and capacitors- are defined rigorously as a graph, such as done here. Given the definition of a ...
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### My Sallen Key Butterworth high pass filter's frequency response graph is not responding

I tried to make a cutoff frequency of interface in partial discharge but the response frequency graph is not responding. I already changed (Amplitude= & frequency= 50Hz) in the sine generator ...
74 views

### Derive values from a graph

I want to get accurate values from this graph when the input voltage (mV) is 0mV what should the output voltage(V) be? I can guess by saying it's 2.55V but I need accurate values to make my circuit ...
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### How to read BJT output characteristic

What's the propper way to read current graph / output characteristic of BJT? Is it useful if there is no DC load line plotted? I'm very beginner and I thought that only possible operating points lay ...
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1 vote
72 views

### How can I get a consistent answer with operations of piecewise functions?

I am trying to multiply two signals mathematically and graphically. I have inconsistent answers, I'd appreciate anyone that can show me where I went wrong. I have two functions of time based on two ...
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### How to model voltage sources, current sources in graph and solve for voltages, currents?

I want to model the circuit as graph with vertices and edges and then solve for the voltages at every nodes and currents in any edge using graph method. However, I got some confusion as in materials ...
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### How am I supposed to read this resistor thermal rating graph?

I am currently trying to learn to read resistor datasheets, specifically the thermal ratings. I want to have a general idea of what the temperature of resistor will be at certain power. Is there some ...
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### How do I calculate threshold voltage from the graph?

I have a table of values given to me which contains drain current Id (in μA) and gate voltage (in volts) calculated in the saturation region for a thin film transistor. I need to find the threshold ...
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### NTC sensor in a Wheatstone bridge [closed]

I put an NTC sensor into a Wheatstone bridge so it gave me a totally non linear curve (positive and negative). How can I make it linear to read it by a microcontroller? Thanks.
383 views

### How can I graph the bias voltage vs capacitance in ADS?

I am trying to model a bias tee and control the capacitance of the varactor by varying the voltage. How do I plot the voltage vs capacitance/charge in a graph in ADS using AC simulation?
48 views

### Solenoid magnetic induction graph

I need help solving this problem, if anyone had a similar problem it would help me a lot. A table is given with the current flowing through the solenoid,also values ​​for the magnetic induction vector ...
1 vote
81 views

### Loudspeaker alignment graph

Hopefully a simple question. I was wondering what the blue line in this graph represents. This is looking at loudspeaker modelling. The red line is obviously the frequency response as loudspeakers are ...
83 views

### How to interpret this current/voltage graph of linear regulator?

Here is a graph from datasheet of XC6202P332 voltage regulator (https://www.torexsemi.com/file/xc6202/XC6202.pdf): What does the lower part of the curve (below 3.3V) mean? Thermal shutdown?
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### I am facing an issue while trying to figure out points on a graph in LTspice. The point that I want to trace isn't appearing on the plot

For example, a simple low pass filter circuit plot(AC analysis). I want to find out the cutoff frequency, -3dB point. But it's not on the plot. I have tried changing the limits on the vertical and ...
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### Murata simsurfing: what is the green line

I was checking murata simsurfing, and I saw there is a green line next to the blue on for the capacitor graph: The green line on the Resistance-Frequency is also constant, very different from the ...
118 views

### What happens when a already charged capacitor is connected to a power supply with less voltage than the capacitor?

I am trying to figure out what exactly happens to the capacitor with 50 V when we connect it to a power source with 25 V. It probably discharges but I am wondering at what rate it stabilizes and at ...
192 views

### How to design this circuit in a simulator? What is wrong? (PSpice)

I am trying to implement this circuit in the PSpice simulator: I did it like this: I am getting this result: I was expecting something different than 0 in the output voltage. Could someone explain ...
186 views

### Possible Contradiction in N87 ferrite material μa vs B graph

Why does this graph description (of N87 material) states ^B =< 0.25mT (which is peak flux density), even though horizontal axis goes up to 0.40T? Is the horizontal axis in tesla peak-to-peak? Is it ...
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261 views

### Is a battery a reasonable model for a forward biased diode? Why are the knee voltages different in the below Multisim schematics?

Here are two DC sweeps from Multisim. One ranges from 0 to 15 mA and the other 0 to 50 uA. They are different. What battery voltage should be used to model a silicon diode? Ultimately, my question is: ...
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428 views

### Supernodes and KCL

Lets talk about Colpitts oscillator again (or the very basic circuit theory if you want). Suppose I modeled circuit as on the schematics below I am interested in systematic ways of obtaining circuit ...
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1 vote
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### How to represent a sum of dirac delta function and a linear function in a graph? (convention question)

I'm working on my final assignment in signal's course that I'm taking. I want to represent the following function in a graph: $f(t)=\delta\left(t+1\right)+(t+1.5)$ Where $-1.5<t<0$. ...
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### What will be the output voltage graph of the following circuit if output voltage is considered across the resister?

The circuit is given below. I know that until the Vin reaches the first peak, the voltage across R (output voltage) will be 0 since capacitors draw current to charge. After that, I couldn't figure it ...
671 views

### What is the meaning of inferred absolute zero temperature? Why does the resistance temperature graph it is obtained from behave that way?

Studying basic direct current circuits, I've come across the term inferred absolute zero temperature on computation of resistances that change due to temperature. Based on my readings, I understand it ...
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### How can I get the graphic of the a resistor-diode circuit's ID-VD graph?

I have tried the following but I am not sure if it is correct or not. How can I be sure?
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1 vote
37 views

### plotting a graph and finding the error(its more software and less electronics)

I have found an output for a RC circuit from ltspice and then tried predicting it using matlab. I converted both the data into text form and observed them by plotting. I want to find the maximum and ...
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1 vote
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### state equation from given signal flow graph

I was solving a question in which I have to write state equations from given signal flow graph ,but I wanted to clear some basic doubts regarding general problem like this I thought it can we solve ...
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### Need help with reading mosfet datasheet (safe operating area graph)

What does indicated time in below graph means? datasheet
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848 views

### Battery nominal voltage - can you confirm my understanding?

I am trying to understand why we can simply just calculate the usable energy that a battery has by multiplying the capacity and the nominal voltage. Since the capacity (available electrical charge) ...
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### Graph of a circuit comprising coupled inductors

In case an arbitrary circuit contains coupled inductors, the system impedance (conductance) matrix is not diagonal. Is there a way to relate such a matrix to adjacency/incidence/Laplacian matrix of ...
1 vote
118 views

### Cadence simulation graph versus time

please do not know if there is a functionality in CADENCE in the graphs show differences in the times between them (make an average of two values). Regarding the delay of two waves [Automatically in ...
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### How do you verify lower cutoff frequency from a voltage vs. time graph?

I am working on a laboratory assignment. I am asked to verify the lower cutoff frequency (F1) value that I calculated (~4950 HZ) using a graph. The lab specifically asks: "Reduce the input frequency ...
2k views

### Finding equation of curve for NTC type thermistor [closed]

I have an NTC thermistor from the KTM 390 engine which I am trying to interface with the Arduino MEGA. The problem is the sensor has no datasheet. I have got the relation between the temperature vs ...
1 vote
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### How to read instrument's range graph

I have an Agilent 4980 LCR meter and in its manual it has several graphs indicating the effective measurement ranges for each scale, like the one below: How to read such a graph to be sure that the ...
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### Equivalent drawing of a parallel basic circuit

I have the following circuit in Everycircuit: Ignoring the component values, when I try plotting this in a network graph, I get something like this: Are these two circuits identical? I suppose the ...
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### Different 'connection types' between components

Is there a name for the different types of connections between components? For example in the following: Point A is connected between two components -- a battery and resistor -- and so is in series. ...
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### Possible ways to represent a circuit schematic

I have the following circuit with a 9V battery and two resistors, R1, R2, in parallel. Here is how it looks: Are the following three ways all valid ways to represent this circuit? Explanation: In ...
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### How to show that voltages on diagram are 120° apart?

So i'm doing a matlab simulation of delta wye transformer and would need to show the phase shift between voltages. Here is a picture of input voltages so how would I show on this graph mathematically ...
1 vote
731 views

### Plotting values into the graph

I recently found this op amp exercise and solved it using superposition .The result was UA I first need to draw U1 and U2 and then based on UA draw the output result.Stuck doing this and now way to ...
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### Build output voltage graph as a result of the integration on an ideal integrator

Picture related is an original task(in Ukrainian): Translation of the task 1(till «Задача 2»): Build the graphic result of the integration on an ideal integrator if R=40 kOmh, C=20 uF and the input ...
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### Given desired overshoot graphically find k from the root locus (Scilab)

I want to find $k_1$ that leads to the feedbakc system having poles in the 53º line (to have overshoot $\leq 10\%$). From the root locus, the poles move along the vertical asymptote centered on -1....
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### Overlay plots from PSpice - SIMetrix or SIMetrix to PSpice

I wanted to verify the accuracy of a identical model which I modelled, between PSpice and SIMetrix simulator I ran model in Pspice and SIMetrix separately and probed required nets (net names are ...
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1 vote
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### Consistently assigning electrode nodes in random resistor networks

In the context of random resistor networks, the general question of interest is often "what is the effective resistance between two arbitrarily chosen nodes?" But more specifically about the nodes we ...
1 vote