From ad6c8c1a7259944e86c9a6a1e0a843497caffdf9 Mon Sep 17 00:00:00 2001
From: Frank Gevaerts <frank@gevaerts.be>
Date: Sat, 2 Oct 2010 14:11:40 +0000
Subject: 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
---
 manual/plugins/resistor.tex | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 manual/plugins/resistor.tex

(limited to 'manual/plugins/resistor.tex')

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
@@ -0,0 +1,28 @@
+\subsection{Resistor Calculator}
+\screenshot{plugins/images/ss-resistor}{Resistor calculator}{img:resistor}
+
+The resistor calculator is a plugin that works in 3 modes:
+
+\subsubsection{Colour to Resistance}
+
+In Colour to Resistance mode, use the menus to select the colours of the
+bands of a resistor which you would like to know the resistance of.
+   
+\subsubsection{Resistance to Colour}
+
+In Resistance to Colour mode, use the menus to select the unit that you
+would like to use (choose from Ohms, Kiloohms, Megaohms), and use
+the on-screen keyboard to input the value of the resistor that you would
+like to know the colour code of. The colour codes are presented
+\opt{lcd_color}{graphically and} textually.
+
+\subsubsection{LED resistance}
+
+LED resistance calculator is used to determine the resistor necessary to light
+an LED safely at a given voltage. First, select the voltage that the LED will
+use (the first option is the most common and a safe bet), and the current
+that it will draw (likewise with the first option). Then, use the onscreen
+keyboard to type in the supply voltage and, if selected, the custom 
+foreward current. This function produces safe estimates, but use your own
+judgement when using these output values. Power rating and displayed resistance
+are rounded up to the nearest common value.
-- 
cgit v1.2.3

