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 around a common core or center. The core is formed by a large number of sheets or sheets of an alloy of iron and silicon. This alloy reduces losses by magnetic hysteresis (ability to maintain a magnetic signal after a magnetic field is removed) and increases the iron resistivity. - Resistor Calculator (Series/Parallel) - SMD Resistor Code - Capacitor Code - SMD Capacitor Code - Transformer Build Calculation and so on