Resistors, Reading of value of resistors, Unit and unit symbol of resistors ....

Hello everyone, In this post we will learn about the basic of RESISTORS. Resistors are electronic component mostly used in all electronics circuits, it is made up of conductors and semiconductors materials ( later on we will learn about conductors and semiconductors). Resistors are used to control the current in a circuit however it is also used for other functions ( we will only learn the basic of resistors lol ). we will first learn how to read and understand resistors value using the Color code look and analyze the chart below:

                                                     CLICK TO ENLARGE
As you notice from the chart above each color ( starting from black to white) has a specified digit

e.g BLACK = 0 and each color have a multiplier if it is 10 to 2 for RED ( it should be 2 zero{00}).

Some colors have a tolerance value e.g GOLD 5%.

Now look and analyze the picture below:

As you notice that we have the 4 band and 5 band resistors we will learn reading value from the 4 band one.

                                                     CLICK TO ENLARGE
As in the picture above the first and second band are converted as there color code the third band are converted to the number of zeroes e.g 2 = 00. so it is 1 0 00 = 1000ohms = 1k ohms ( kilo ohms). That how we read resistors using color code. 

Basic introduction to electronics components

Let's take a look at some the basic electronics components used in electronics circuits though on the site below some of them are not important for the basic introduction to components.
http://en.wikipedia.org/wiki/Electronic_component

basic soldering and desoldering techniques video

Basic Soldering Techniques

to have a good and simple guide about how to solder components on a PCB ( printed circuit board)
visit http://www.technick.net/public/code/cp_dpage.php?aiocp_dp=how_to_solder

you will need :

1. A good soldering iron ( preferably with a stand ) with a good and clean tip.    

2. Reasonable amount of solder.

3. Good small PCB or a strip board.

 

simple LED throwie schematic diagram and guide

visit this link to have a layout and a guide to make the simple led throwie.

http://www.evilmadscientist.com/article.php/nightlight

How to make a simple LED throwie

pirated movies and cd's

Hello to everybody, as we all know there is a lot of pirated movies sold in Mauritius an is available every corner as from Rs 25 for a movie and Rs for a pc/ ps 2 games ( personal computer or playstation 2). It is alright if the games run well or the movie has a great image and sound. But a large percentage of these CD is not good enough. i am a great fans of these video games and movies, it is not obvious to buy these CD for a Rs 25/ Rs 50

and you have a great disappointment that these CD are not good. And the next day you have to go back to the shop/ video club ( obviously if it is far from your place) to change the CD. so what's your opinion about these pirated movies or games.