How Does a Spotlight Work?
Spotlights Are Electric In their most basic form, spotlights are basic electrical circuits. A power source–which may, depending on the model of the spotlight, be either alternating or direct current—connects through a switch to a high intensity light bulb. When the switch is moved into the “On” position, a mechanism inside the switch completes the electrical circuit and allows current to flow from the power source, through the lamp, and back to the power ground path. A filament inside the bulb resists the flow of electricity and, as the electricity forces its way through, begins to glow. In some very high efficiency spotlights, the electrical current feeds a small circuit board that, in turn, illuminates a collection of high intensity light emitting diodes (LED) to produce light. Spotlights Are Reflective Although the flow of electricity illuminates a bulb inside the spotlight, the bulb alone is rarely sufficient to produce the large amounts of light for which spotlights are renowne
