Image:Negative differential resistance.svg

From Wikipedia, the free encyclopedia

Image
File history
File links

No higher resolution available.

Negative_differential_resistance.svg‎ (600 × 480 pixel, file size: 16 KB, MIME type: image/svg+xml)

	This is a file from the Wikimedia Commons. The description on its description page there is shown below.
	Commons is attempting to create a freely licensed media file repository. You can help.

[edit] Summary

Description

See Wikipedia graph-making tips.

Generated in gnuplot with the following script (save as gunn.gp and then open in gnuplot):

set samples 2001
set terminal svg
set output "gunn.svg"

# VI curve with negative differential resistance region
I(V) = (V/2.5-2)**3 + -2*(V/2.5-2) + 4

# Square plot ratio
set size square

# Set range of x and y axes
set xrange [0:10]
set yrange [0:10]

# Create axis tics every 20 numbers, so only the 0 is actually visible
set xtics 20
set ytics 20

# Use 10 axis minor divisions per major division, so there is a division for each integer, but they aren't labeled.
set mxtics 20
set mytics 20

# Axis labels
set xlabel "Voltage (V)"
set ylabel "Current (I)"

# VI curve's plotting style
set style line 1 lt 1 lw 2

# Dotted line style
set style line 2 lt 2 lw 1 
set style arrow 2 nohead ls 2

# Draw dotted lines
set arrow 1 from 3,5.3 to 3,7 as 2
set arrow 2 from 7,3.1 to 7,7 as 2

# Arrowheaded line style
set style line 4 lt 4 lw 1
set style arrow 4 head filled size screen 0.02,15,45 ls 4

# Draw arrows
set arrow 3 from 3.7,7 to 3,7 as 4
set arrow 4 from 6.3,7 to 7,7 as 4

# Label region
set label 1 "Negative differential \nresistance region" at 5,8 c

# Plot the filter response
plot I(x) ls 1 notitle

Then I postprocessed it with Inkscape

Source

the original gnuplot code is by Omegatron, adapted for SVG by Alessio Damato

This vector image was created with Gnuplot.

Date

21 December 2006

Author

Omegatron and Alessio Damato

Permission

see below

Other versions

png version at Image:Negative_differential_resistance.png

[edit] Licensing

I, the author of this work, hereby publish it under the following licenses:

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".