Electronics Calculator is the Easiest App to Calculate Electronics Parts Color/Code. eg: Resistor/Capacitor and so on. Resistor Color Code: The Resistor Color Code Calculator decodes and identifies a value and tolerance of 4 band wire wound resistors. The colors brown, red, green, blue, and violet are used as tolerance codes on 5-band resistors only. Transformer: The electrical component transformer that has the ability to change the level of voltage and current, by means of two coils wound ar