Electronic – Resistors with ends of the same colour

colour-codingresistance

I know the values of resistors if they are gold-colored at the end. When both ends are the same, such as brown-o-p-brown and red-x-y-z-red, I am in problems. How to know which side has the last colour and which side is the starting end?

Best Answer

I asked a similar question a long time ago here but the resistor chart which was mentioned there appears to have moved. So from its new home at itll.colorado.edu here's the diagram, as far as I can tell one band will be thicker signifying it as the tolerance band (no-one responded when I queried whether this was the case in the previous post above so if I'm wrong please let me know).

Resistor Chart