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author | Frank Gevaerts <frank@gevaerts.be> | 2010-10-02 14:11:40 +0000 |
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committer | Frank Gevaerts <frank@gevaerts.be> | 2010-10-02 14:11:40 +0000 |
commit | ad6c8c1a7259944e86c9a6a1e0a843497caffdf9 (patch) | |
tree | d179006b94bc4d4e6fd0324eb51160a67c92a3d4 /manual/plugins/resistor.tex | |
parent | 86de79171bfca693e16eaa748b6aabd3e6d53cba (diff) | |
download | rockbox-ad6c8c1a7259944e86c9a6a1e0a843497caffdf9.tar.gz rockbox-ad6c8c1a7259944e86c9a6a1e0a843497caffdf9.zip |
New plugin: Resistor code calculator
Flyspray: FS#11585
Author: Calvin Walden
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28191 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'manual/plugins/resistor.tex')
-rw-r--r-- | manual/plugins/resistor.tex | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/manual/plugins/resistor.tex b/manual/plugins/resistor.tex new file mode 100644 index 0000000000..27cc9a3e5e --- /dev/null +++ b/manual/plugins/resistor.tex | |||
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1 | \subsection{Resistor Calculator} | ||
2 | \screenshot{plugins/images/ss-resistor}{Resistor calculator}{img:resistor} | ||
3 | |||
4 | The resistor calculator is a plugin that works in 3 modes: | ||
5 | |||
6 | \subsubsection{Colour to Resistance} | ||
7 | |||
8 | In Colour to Resistance mode, use the menus to select the colours of the | ||
9 | bands of a resistor which you would like to know the resistance of. | ||
10 | |||
11 | \subsubsection{Resistance to Colour} | ||
12 | |||
13 | In Resistance to Colour mode, use the menus to select the unit that you | ||
14 | would like to use (choose from Ohms, Kiloohms, Megaohms), and use | ||
15 | the on-screen keyboard to input the value of the resistor that you would | ||
16 | like to know the colour code of. The colour codes are presented | ||
17 | \opt{lcd_color}{graphically and} textually. | ||
18 | |||
19 | \subsubsection{LED resistance} | ||
20 | |||
21 | LED resistance calculator is used to determine the resistor necessary to light | ||
22 | an LED safely at a given voltage. First, select the voltage that the LED will | ||
23 | use (the first option is the most common and a safe bet), and the current | ||
24 | that it will draw (likewise with the first option). Then, use the onscreen | ||
25 | keyboard to type in the supply voltage and, if selected, the custom | ||
26 | foreward current. This function produces safe estimates, but use your own | ||
27 | judgement when using these output values. Power rating and displayed resistance | ||
28 | are rounded up to the nearest common value. | ||