Resistor
makerA resistor is an electrical component that limits or regulates the flow of electrical current in a circuit.
expanded
A resistor is a passive electrical component that introduces resistance within an electrical circuit, thus controlling the amount of current that flows across it. Resistors are essential in managing current levels to ensure components are not damaged by excessive current. Resistors play a critical role in applications such as voltage division, signal conditioning, and biasing active elements to ensure circuit stability.
examples
A 220-ohm resistor with a power rating of 0.25 watts is commonly used to limit current flowing through an LED to prevent its damage.
This use is typical in basic electronic projects where current limiting is necessary to protect LEDs from exceeding their maximum forward current rating.
A 1 kΩ, 1-watt resistor is used in voltage divider circuits to provide specific voltage levels to various parts of electronic systems.
Such a resistor is frequently employed in sensor circuits where specific voltage signals are required for accurate readings.