What is the purpose of a dimmer switch?

A dimmer switch is specifically designed to adjust the brightness of light fixtures by varying the amount of electrical power that flows to the light. This control allows users to easily set the mood or ambiance of a room by increasing or decreasing the light output as needed, making it a versatile and practical tool in both residential and commercial lighting applications.

Dimmer switches function by changing the voltage and current characteristics within the circuit that powers the light, typically using a technology such as phase-cut dimming, which regulates the power delivered to the light source. This adjustment not only enhances comfort but can also contribute to energy savings by allowing lights to be used at lower brightness levels when full illumination is not required.