File:Pwm.svg
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Original file (SVG file, nominally 600 × 500 pixels, file size: 71 KB)
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Summary
| Description |
English: Principle of the intersective pulse width modulation (PWM). Created with maxima.
Русский: Принцип перекрёстной широтно-импульсной модуляции |
| Date | |
| Source |
Own work based on: Pwm.png:  by CyrilB |
| Author |
Vector: |
| Other versions |
|
| SVG development |  This W3C-invalid diagram was created with gnuplot. |
Source code
This media was created with gnuplot (command-line plotting program)
Here is a listing of the source used to create this file.
Here is a listing of the source used to create this file.
sawtooth(t) := t - floor(t);
freq : 0.05$
sinesignal(t) := (1/2)+(499/1000)*sin(2*%pi*freq*t);
pwm(t) := if(sawtooth(t) >= sinesignal(t)) then 0 else 1;
load(draw)$
n : 1e4;kill(crossing);
crossing : (x:[0],
for i:0 while i<20*n do
if( pwm(i/n)#pwm((i+1)/n) ) /* detect edge */
then x:append(x,[(i/n)]),
setify(x));
length(crossing); /* copy the x-tics from here */
source : gr2d(
font="Times",nticks=50,
grid=true,ytics={0,1},yrange=[-.25,1.25],
user_preamble="set format x "";set xlabel "" 0,1;
set bmargin 0;set tmargin 0",
xtics= {0,0.592,0.999,1.762,1.999,2.893,2.999,3.973,
3.999,4.998,4.999,5.975,5.999,6.911,6.999,7.816,7.999,
8.698,9,9.567,10,10.432,
10.999,11.301,11.999,12.183,12.999,13.088,13.999,14.024,
14.999,15.001,15.999,16.026,16.999,17.106,17.999,18.237,
18.999,19.407,19.999},
xlabel="",ylabel="source signals",
explicit(sawtooth(x),x,0,19),
color=red,explicit(sinesignal(x),x,0,19)
)$
pwm_plot : gr2d(
font="Times",nticks=50,
grid=true,ytics={0,1},yrange=[-.25,1.25],
user_preamble="set format x "";set bmargin 2.25",
xtics= {0,0.592,0.999,1.762,1.999,2.893,2.999,3.973,
3.999,4.998,4.999,5.975,5.999,6.911,6.999,7.816,7.999,
8.698,9,9.567,10,10.432,
10.999,11.301,11.999,12.183,12.999,13.088,13.999,14.024,
14.999,15.001,15.999,16.026,16.999,17.106,17.999,18.237,
18.999,19.407,19.999},
xlabel="Time",ylabel="PWM signal",
color=magenta,explicit(pwm(x),x,0,19)
)$
draw(terminal=svg,file_name="Pwm",
source,pwm_plot);
I, the copyright holder of this work, hereby publish it under the following licenses:
This file is licensed under the Creative Commons Attribution-Share Alike 2.5 Generic, 2.0 Generic and 1.0 Generic license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
|
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. | |
| ||
| This licensing tag was added to this file as part of the GFDL licensing update. |
|
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. |
You may select the license of your choice.
Original upload log
This image is a derivative work of the following images:
- Pwm.png licensed with Cc-by-sa-2.5,2.0,1.0, Cc-by-sa-3.0-migrated, GFDL
- 2006-03-23T08:44:47Z CyrilB 1500x1050 (87343 Bytes) Cyril BUTTAY Principle of the intersective pulse width modulation (PWM). This figure has been made using gnuplot 4.0 and the following code: # This file is used to generate a plot that explains the # principle of the inte
Uploaded with derivativeFX
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:44, 29 May 2011 | | 600 × 500 (71 KB) | Krishnavedala | {{Information |Description=Principle of the intersective pulse width modulation (PWM). Created with following maxima code. <source lang="gnuplot"> sawtooth(t) := t - floor(t); freq : 0.05$ sinesignal(t) := (1/2)+(499/1000)*sin(2*%pi |
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