This repository has been archived by the owner on Feb 7, 2022. It is now read-only.
/ PyResistorColorCode Public archive

PyResistorColorCode is a Python module that provides some tools to manage IEC 60062 marking codes for resistors.

# PySpice-org/PyResistorColorCode

## Folders and files

NameName
Last commit message
Last commit date

41 Commits

# PyResistorColorCode

## Overview

PyResistorColorCode is a Python module that provides some tools to manage IEC 60062 marking codes for resistors.

The associated program resistor-decoder provides a graphical user interface to help user to decode a resistor colour-coding using an inference algorithm. This feature is an enhancement compared to a program like gresistor which is only a colour-coding calculator.

I started to develop this software a day where I had to sort a lot of unsorted resistors in a jumble. Resistors colour-coding using no more than 3 bands (2 digits and a multiplier) are no too difficult to decode when a person is experienced. But for more accurate resistors, it is more tricky. Another difficulty arises when it is difficult to recognise the colour of a band, due to an inappropriate colour contrast or tone. For strange colour-coding we can in last resort use an Ohmmeter to measure the resistance value. But it doesn't respond to the question what is the specification of this resistor: tolerance, temperature coefficient, etc. For all theses reasons, I developed an inference algorithm coupled to an graphical user interface to help user to decode resistor colour-coding.

### Inference Algorithm

The inference algorithm works as follow:

• code orientation (left-right or right-left) doesn't matter,
• unset bands are not take into account,
• at least 3 colours must be provided: 2 digits and the multiplier,
• colour band are interpreted by priority as:
1. resistance value,
2. resistance tolerance,
3. temperature coefficient,
• the resistance value must exists in a IEC 60063 series: E6, E12, E48, E96, E192,
• the resistance tolerance must be defined if there is a colour band assigned to it.

When there is more than one hypothesis for the given input, the hypotheses are sorted by ascending precision (series).

### How to install it ?

Look at the installation section in the documentation.

## Credits

Authors: Fabrice Salvaire

## News

### V1 2017-11-21

Ported to Python 3 and PyQt5

### V0 2012-05-20

Started project

PyResistorColorCode is a Python module that provides some tools to manage IEC 60062 marking codes for resistors.

## Releases

No releases published

## Packages 0

No packages published