tech3

 Resistors: resistors are formed by 4 color brands, together and 1 apart from the others. The 3 color brands that are together help usto calculate the resistance of the resisor, for calculate this resistance the fist 2 brand colors gives us the fist and the second number that we will need for multiplying it by the third equivalent number thatgives the third color brand. Each color have an equivalent number depending on what color brand it is, giving us this table:

For example this resistor:

will have a resistance of 1.000 ohms.

And this other resistor:

will have a resistance of 22.000 ohms.

The fourth brand color say us about the valour it can have under or behind the equivalent valor, giving us this table: