These bulbs supply three ranges of illumination from a single socket, achieved via two separate filaments throughout the bulb. Every filament offers a distinct stage of sunshine output, and a 3rd setting illuminates each filaments concurrently for optimum brightness. For instance, a bulb may supply 50 watts, 100 watts, and 150 watts as its three ranges.
Any such lighting offers flexibility in setting the ambiance and conserving power. Customers can choose the suitable brightness for the duty at hand, lowering power consumption when much less mild is required. Traditionally, these bulbs have been a typical resolution for attaining diverse lighting ranges earlier than the widespread adoption of dimmer switches and different applied sciences.
