What is a Resistor?
Learn the purpose of resistors and why they are one of the most common electronic components.
Components
Resistors
Learn how resistors work, how to identify them, calculate their values and use them correctly in electronic circuits.
Resistor Fundamentals
Types of Resistors
Resistor Colour Code
Variable Resistors
Resistor Networks
Recommended Reading
Start here if you're learning about resistors for the first time.
Reading Resistor Colour Codes
Learn how to identify resistor values using colour bands.
Resistor Colour Code Calculator
Decode resistor colour bands instantly using our free calculator.