Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [graph]

98 questions
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4 answers

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 multiple manufacturers and device types. It's a plotted graph, x * y, where x could be…
Passerby
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2 answers

Plot a 50Hz Sine Wave in Excel

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 to do that?
TomC
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4
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2 answers

What are Normalized graphs?

I am reading this datasheet and there are some graphs that says (Normalized) on one of it's axis...what is this?
mFeinstein
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2 answers

Need help with reading mosfet datasheet (safe operating area graph)

What does indicated time in below graph means? datasheet
ElectronSurf
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4
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1 answer

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) in a battery depends on the drawn current (unlike…
KrNeki
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1 answer

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?
Alex Poca
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3 answers

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 the ripples in passband show. The curve is clearly…
Plutonium smuggler
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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 of the transmitted signal in dBW? My Work Now we…
Casper
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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 voltage by drawing a graph. I used Desmos to draw…
blackblade
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what is the physical meaning of transconductance?

i know for a BJT transconductance is the slope of the collector current to the base-emitter voltage difference plot.. ans also it is equal to the slope of the collector current to the thermal voltage Vt = (nk)/q where n can be 1 or 2 and k is…
iec2011007
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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 place I can look up and learn to read resistor…
komrad2236
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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?
Nimasha Pilippange
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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 state-space equations with no ad hoc…
struct
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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?
Csopso
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Finding equation of curve for NTC type thermistor

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 resistance for the thermistor form another person…
Niranjan Tarle
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