Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [plot]

42 questions
6
votes
1 answer

Kicad plotting/printing

I made a really simple scheme/pcb using Kicad (on Ubuntu 14.04). Now I'd like to print this and make my PCB, but I can't figure out how to properly plot the damn thing! When I plot using gerber format and open files in gerbv, everything seems to be…
newman555p
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1 answer

Appending plots in LTspice

The single most important thing I miss in LTspice is the ability to plot things of multiple runs on top of each other. Cadence Virtuoso calls that "Append Plot". What I mean: I want to plot one node of my circuit, hit "Run" and plot. Then change the…
divB
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3
votes
1 answer

Smooth wave plotting using 3 inch thermal printer

I am interfacing 3 inch Fujitsu thermal printer (FTP-638MCL103) with STM32. Character printing is working fine. I am struggling to print smooth sine waves generated from a function generator. I want to make this dotted waveform smoother. Here is my…
Shubham
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3
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1 answer

How to save plots in ngspice

Is there a command or an option in the "plot" command that can generate png/jpg images of the plots?
Mahrrkiee
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2
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1 answer

.four plot FF/t LTspice

I am trying to plot an FFT in LTspice using a .four command and the spice error log directly without using the FFT on LTspice (right click + view + FFT once the simulation is finished). How is it possible to plot the data of the .four command at the…
George
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2
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2 answers

Antenna radiation plot and negative gain values

In general, how to interpret the negative gain values on antenna radiation diagram plot? I have attached an example. My guess is that they represent some value relative to some reference value. If so, which reference value is used in such cases?
Quirik
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2
votes
1 answer

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 left hand side and current on the right, but…
Marissa
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2
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2 answers

How to plot dy/dx versus x of a given y=f(x) plot in LTspice?

Below is a plot of a sweep which shows how Vo changes versus Vi in LTspice: How can I plot the "derivative of Vo" i.e dVo/dVi versus Vi? How can I plot the "integral of Vo" versus Vi? Edit: I was trying to see how the voltage gain for a transistor…
floppy380
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2
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2 answers

Why would a sensor output an inverted signal?

I have a sensor that has 3 components: X, Y and Z and for every component there are 2 channels: X+ :0 V ± 5 V voltage output X- :0 V ± 5 V voltage output inverted All I know is : If the circuit uses "active high" logic, 5 volts represents a…
Mehdi ouahabi
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vote
1 answer

is it possible to control plot points independently of traces in LTspice plots

It would be nice to have a plot capability, where I could completely remove the plot traces, but keep the data points and also have control of the data point properties (sizes, etc). The attached plot shows an example of plotting some random…
pat
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LTspice - move the cursor to a particular run in the plot

After running a stepped parameter simulation, the cursor can be moved between different runs using the up and down arrows. This is impractical for a large number of runs. Is there a way to jump to e.g. run 152 without plodding through the runs one…
Hyp
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1 answer

LTSpice, plot a current–voltage characteristic

I have LTSpice on macOS. I would like to plot in x-axis the voltage v(2) and in y-axis the current I(R1). But, when I add traces to the plot pane, I cannot choose the axis. How can I plot the current–voltage characteristic? In ngSpice the command…
Lisa
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3 answers

How to move LTspice transient simulation plot so they don't overlap

I have a shift register circuit that I want to simulate, and so far, everything seems to work as intended, but I am having a bit of a hard time with the voltage plots. They all overlap, and since the signals are all square waves with either 0V or…
Samuel Snerden
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1
vote
0 answers

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 the graph or table]. Example is in the image.
LUFER
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What exactly does the frequency spectrum represent?

The signals in the image represent a low pass signal and its Hilbert Transform. I know that a plot for a signal's magnitude with reference to frequencies can be found by applying a Fourier Transform. However, I've always read that the frequency plot…
Paddy
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